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initial commit

This commit is contained in:
thrust26 2020-04-03 17:08:42 +02:00
parent 3f5453e9d4
commit 244fc3f7d3
410 changed files with 11017 additions and 2539 deletions
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1
src/common/bspf.hxx
View File

@ -84,6 +84,7 @@ using ByteArray = std::vector<uInt8>;
using ShortArray = std::vector<uInt16>;
using StringList = std::vector<std::string>;
using ByteBuffer = std::unique_ptr<uInt8[]>; // NOLINT
using WordBuffer = std::unique_ptr<uInt16[]>; // NOLINT
// We use KB a lot; let's make a literal for it
constexpr uInt32 operator "" _KB(unsigned long long size)

18
src/debugger/gui/CartE0Widget.cxx
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@ -98,9 +98,9 @@ CartridgeE0Widget::CartridgeE0Widget(
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeE0Widget::loadConfig()
{
mySlice0->setSelectedIndex(myCart.myCurrentSlice[0]);
mySlice1->setSelectedIndex(myCart.myCurrentSlice[1]);
mySlice2->setSelectedIndex(myCart.myCurrentSlice[2]);
mySlice0->setSelectedIndex(myCart.myCurrentBank[0]);
mySlice1->setSelectedIndex(myCart.myCurrentBank[1]);
mySlice2->setSelectedIndex(myCart.myCurrentBank[2]);
CartDebugWidget::loadConfig();
}
@ -114,13 +114,13 @@ void CartridgeE0Widget::handleCommand(CommandSender* sender,
switch(cmd)
{
case kSlice0Changed:
myCart.segmentZero(mySlice0->getSelected());
myCart.bank(mySlice0->getSelected(), 0);
break;
case kSlice1Changed:
myCart.segmentOne(mySlice1->getSelected());
myCart.bank(mySlice1->getSelected(), 1);
break;
case kSlice2Changed:
myCart.segmentTwo(mySlice2->getSelected());
myCart.bank(mySlice2->getSelected(), 2);
break;
default:
break;
@ -136,9 +136,9 @@ string CartridgeE0Widget::bankState()
ostringstream& buf = buffer();
buf << "Slices: " << std::dec
<< seg0[myCart.myCurrentSlice[0]] << " / "
<< seg1[myCart.myCurrentSlice[1]] << " / "
<< seg2[myCart.myCurrentSlice[2]];
<< seg0[myCart.myCurrentBank[0]] << " / "
<< seg1[myCart.myCurrentBank[1]] << " / "
<< seg2[myCart.myCurrentBank[2]];
return buf.str();
}

101
src/emucore/CartE0.cxx
View File

@ -34,17 +34,17 @@ void CartridgeE0::reset()
// Setup segments to some default slices
if(randomStartBank())
{
segmentZero(mySystem->randGenerator().next() % 8);
segmentOne(mySystem->randGenerator().next() % 8);
segmentTwo(mySystem->randGenerator().next() % 8);
bank(mySystem->randGenerator().next() % 8, 0);
bank(mySystem->randGenerator().next() % 8, 1);
bank(mySystem->randGenerator().next() % 8, 2);
}
else
{
segmentZero(4);
segmentOne(5);
segmentTwo(6);
bank(4, 0);
bank(5, 1);
bank(6, 2);
}
myCurrentSlice[3] = 7; // fixed
myCurrentBank[3] = bankCount() - 1; // fixed
myBankChanged = true;
}
@ -69,7 +69,7 @@ void CartridgeE0::install(System& system)
// Set the page accessing methods for the hot spots in the last segment
access.directPeekBase = nullptr;
access.romAccessBase = &myRomAccessBase[0x1FC0]; // TJ: is this the correct address (or 0x1FE0)?
access.romAccessBase = &myRomAccessBase[0x1FC0];
access.romPeekCounter = &myRomAccessCounter[0x1FC0];
access.romPokeCounter = &myRomAccessCounter[0x1FC0 + myAccessSize];
access.type = System::PageAccessType::READ;
@ -81,7 +81,7 @@ void CartridgeE0::install(System& system)
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeE0::getBank(uInt16 address) const
{
return myCurrentSlice[(address & 0xFFF) >> 10]; // 1K slices
return myCurrentBank[(address & 0xFFF) >> 10]; // 1K slices
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@ -98,18 +98,18 @@ uInt8 CartridgeE0::peek(uInt16 address)
// Switch banks if necessary
if((address >= 0x0FE0) && (address <= 0x0FE7))
{
segmentZero(address & 0x0007);
bank(address & 0x0007, 0);
}
else if((address >= 0x0FE8) && (address <= 0x0FEF))
{
segmentOne(address & 0x0007);
bank(address & 0x0007, 1);
}
else if((address >= 0x0FF0) && (address <= 0x0FF7))
{
segmentTwo(address & 0x0007);
bank(address & 0x0007, 2);
}
return myImage[(myCurrentSlice[address >> 10] << 10) + (address & 0x03FF)];
return myImage[(myCurrentBank[address >> 10] << 10) + (address & 0x03FF)];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@ -120,83 +120,38 @@ bool CartridgeE0::poke(uInt16 address, uInt8)
// Switch banks if necessary
if((address >= 0x0FE0) && (address <= 0x0FE7))
{
segmentZero(address & 0x0007);
bank(address & 0x0007, 0);
}
else if((address >= 0x0FE8) && (address <= 0x0FEF))
{
segmentOne(address & 0x0007);
bank(address & 0x0007, 1);
}
else if((address >= 0x0FF0) && (address <= 0x0FF7))
{
segmentTwo(address & 0x0007);
bank(address & 0x0007, 2);
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeE0::segmentZero(uInt16 slice)
void CartridgeE0::bank(uInt16 bank, uInt16 slice)
{
if(bankLocked()) return;
// Remember the new slice
myCurrentSlice[0] = slice;
uInt16 offset = slice << 10;
myCurrentBank[slice] = bank;
uInt16 sliceOffset = slice * (1 << 10);
uInt16 bankOffset = bank << 10;
// Setup the page access methods for the current bank
System::PageAccess access(this, System::PageAccessType::READ);
for(uInt16 addr = 0x1000; addr < 0x1400; addr += System::PAGE_SIZE)
for(uInt16 addr = 0x1000 + sliceOffset; addr < 0x1000 + sliceOffset + 0x400; addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[offset + (addr & 0x03FF)];
access.romAccessBase = &myRomAccessBase[offset + (addr & 0x03FF)];
access.romPeekCounter = &myRomAccessCounter[offset + (addr & 0x03FF)];
access.romPokeCounter = &myRomAccessCounter[offset + (addr & 0x03FF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeE0::segmentOne(uInt16 slice)
{
if(bankLocked()) return;
// Remember the new slice
myCurrentSlice[1] = slice;
uInt16 offset = slice << 10;
// Setup the page access methods for the current bank
System::PageAccess access(this, System::PageAccessType::READ);
for(uInt16 addr = 0x1400; addr < 0x1800; addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[offset + (addr & 0x03FF)];
access.romAccessBase = &myRomAccessBase[offset + (addr & 0x03FF)];
access.romPeekCounter = &myRomAccessCounter[offset + (addr & 0x03FF)];
access.romPokeCounter = &myRomAccessCounter[offset + (addr & 0x03FF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeE0::segmentTwo(uInt16 slice)
{
if(bankLocked()) return;
// Remember the new slice
myCurrentSlice[2] = slice;
uInt16 offset = slice << 10;
// Setup the page access methods for the current bank
System::PageAccess access(this, System::PageAccessType::READ);
for(uInt16 addr = 0x1800; addr < 0x1C00; addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[offset + (addr & 0x03FF)];
access.romAccessBase = &myRomAccessBase[offset + (addr & 0x03FF)];
access.romPeekCounter = &myRomAccessCounter[offset + (addr & 0x03FF)];
access.romPokeCounter = &myRomAccessCounter[offset + (addr & 0x03FF) + myAccessSize];
access.directPeekBase = &myImage[bankOffset + (addr & 0x03FF)];
access.romAccessBase = &myRomAccessBase[bankOffset + (addr & 0x03FF)];
access.romPeekCounter = &myRomAccessCounter[bankOffset + (addr & 0x03FF)];
access.romPokeCounter = &myRomAccessCounter[bankOffset + (addr & 0x03FF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
myBankChanged = true;
@ -206,7 +161,7 @@ void CartridgeE0::segmentTwo(uInt16 slice)
bool CartridgeE0::patch(uInt16 address, uInt8 value)
{
address &= 0x0FFF;
myImage[(myCurrentSlice[address >> 10] << 10) + (address & 0x03FF)] = value;
myImage[(myCurrentBank[address >> 10] << 10) + (address & 0x03FF)] = value;
return true;
}
@ -222,7 +177,7 @@ bool CartridgeE0::save(Serializer& out) const
{
try
{
out.putShortArray(myCurrentSlice.data(), myCurrentSlice.size());
out.putShortArray(myCurrentBank.data(), myCurrentBank.size());
}
catch(...)
{
@ -238,7 +193,7 @@ bool CartridgeE0::load(Serializer& in)
{
try
{
in.getShortArray(myCurrentSlice.data(), myCurrentSlice.size());
in.getShortArray(myCurrentBank.data(), myCurrentBank.size());
}
catch(...)
{

20
src/emucore/CartE0.hxx
View File

@ -156,32 +156,18 @@ class CartridgeE0 : public Cartridge
private:
/**
Install the specified slice for segment zero
Install the specified slice for segment (bank) 0..2
@param slice The slice to map into the segment
*/
void segmentZero(uInt16 slice);
/**
Install the specified slice for segment one
@param slice The slice to map into the segment
*/
void segmentOne(uInt16 slice);
/**
Install the specified slice for segment two
@param slice The slice to map into the segment
*/
void segmentTwo(uInt16 slice);
void bank(uInt16 bank, uInt16 slice);
private:
// The 8K ROM image of the cartridge
std::array<uInt8, 8_KB> myImage;
// Indicates the slice mapped into each of the four segments
std::array<uInt16, 4> myCurrentSlice;
std::array<uInt16, 4> myCurrentBank;
private:
// Following constructors and assignment operators not supported

259
src/emucore/CartEnhanced.cxx Normal file
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@ -0,0 +1,259 @@
//============================================================================
//
// SSSS tt lll lll
// SS SS tt ll ll
// SS tttttt eeee ll ll aaaa
// SSSS tt ee ee ll ll aa
// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
// SS SS tt ee ll ll aa aa
// SSSS ttt eeeee llll llll aaaaa
//
// Copyright (c) 1995-2020 by Bradford W. Mott, Stephen Anthony
// and the Stella Team
//
// See the file "License.txt" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "System.hxx"
#include "CartEnhanced.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeEnhanced::CartridgeEnhanced(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5),
mySize(size)
{
// Allocate array for the ROM image
myImage = make_unique<uInt8[]>(mySize);
// Copy the ROM image into my buffer
std::copy_n(image.get(), mySize, myImage.get());
// Copy the ROM image into my buffer
createRomAccessArrays(mySize);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeEnhanced::install(System& system)
{
// Allocate array for the current bank segments slices
myCurrentBankOffset = make_unique<uInt16[]>(BANK_SEGS);
std::fill_n(myCurrentBankOffset.get(), BANK_SEGS, 0);
// Allocate array for the RAM area
myRAM = make_unique<uInt8[]>(myRamSize);
// Setup page access
mySystem = &system;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing method for the RAM writing pages
// Map access to this class, since we need to inspect all accesses to
// check if RWP happens
access.type = System::PageAccessType::WRITE;
for(uInt16 addr = 0x1000; addr < 0x1000 + myRamSize; addr += System::PAGE_SIZE)
{
uInt16 offset = addr & myRamMask;
access.romAccessBase = &myRomAccessBase[offset];
access.romPeekCounter = &myRomAccessCounter[offset];
access.romPokeCounter = &myRomAccessCounter[offset + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Set the page accessing method for the RAM reading pages
access.type = System::PageAccessType::READ;
for(uInt16 addr = 0x1000 + myRamSize; addr < 0x1000 + myRamSize * 2; addr += System::PAGE_SIZE)
{
uInt16 offset = addr & myRamMask;
access.directPeekBase = &myRAM[offset];
access.romAccessBase = &myRomAccessBase[myRamSize + offset];
access.romPeekCounter = &myRomAccessCounter[myRamSize + offset];
access.romPokeCounter = &myRomAccessCounter[myRamSize + offset + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeEnhanced::reset()
{
initializeRAM(myRAM.get(), myRamSize);
initializeStartBank(getStartBank());
// Upon reset we switch to the reset bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeEnhanced::peek(uInt16 address)
{
uInt16 peekAddress = address;
address &= myBankMask;
checkSwitchBank(address);
if(address < myRamSize) // Write port is at 0xF000 - 0xF07F (128 bytes)
return peekRAM(myRAM[address], peekAddress);
else
return myImage[myBankOffset + address];
return myImage[myCurrentBankOffset[address >> BANK_SHIFT] + (address & BANK_MASK)];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeEnhanced::poke(uInt16 address, uInt8 value)
{
address &= myBankMask;
// Switch banks if necessary
if (checkSwitchBank(address & myBankMask))
return false;
if(myRamSize)
{
if(!(address & myRamSize))
{
pokeRAM(myRAM[address & myRamMask], address, value);
return true;
}
else
{
// Writing to the read port should be ignored, but trigger a break if option enabled
uInt8 dummy;
pokeRAM(dummy, address, value);
myRamWriteAccess = address;
}
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeEnhanced::bank(uInt16 bank, uInt16 slice)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << myBankShift;
uInt16 romHotspot = this->romHotspot();
uInt16 fromAddr = 0x1000 + myRamSize * 2;
uInt16 toAddr;
if(romHotspot)
{
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (romHotspot & ~System::PAGE_MASK); addr < 0x1000 + myBankSize;
addr += System::PAGE_SIZE)
{
uInt16 offset = myBankOffset + (addr & myBankMask);
access.romAccessBase = &myRomAccessBase[offset];
access.romPeekCounter = &myRomAccessCounter[offset];
access.romPokeCounter = &myRomAccessCounter[offset + myAccessSize];
mySystem->setPageAccess(addr, access);
}
toAddr = romHotspot;
}
else
toAddr = 0x1000 + myBankSize;
System::PageAccess access(this, System::PageAccessType::READ);
// Setup the page access methods for the current bank
for(uInt16 addr = (fromAddr & ~System::PAGE_MASK); addr < (toAddr & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
uInt16 offset = myBankOffset + (addr & myBankMask);
if(myDirectPeek)
access.directPeekBase = &myImage[offset];
access.romAccessBase = &myRomAccessBase[offset];
access.romPeekCounter = &myRomAccessCounter[offset];
access.romPokeCounter = &myRomAccessCounter[offset + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeEnhanced::getBank(uInt16) const
{
return myBankOffset >> myBankShift;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeEnhanced::bankCount() const
{
return uInt16(mySize >> myBankShift);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeEnhanced::patch(uInt16 address, uInt8 value)
{
address &= myBankMask;
if(address < myRamSize * 2)
{
// Normally, a write to the read port won't do anything
// However, the patch command is special in that ignores such
// cart restrictions
myRAM[address & myRamMask] = value;
}
else
myImage[myBankOffset + address] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeEnhanced::getImage(size_t& size) const
{
size = mySize;
return myImage.get();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeEnhanced::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
if(myRamSize)
out.putByteArray(myRAM.get(), myRamSize);
}
catch(...)
{
cerr << "ERROR: << " << name() << "::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeEnhanced::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
if(myRamSize)
in.getByteArray(myRAM.get(), myRamSize);
}
catch(...)
{
cerr << "ERROR: " << name() << "::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> myBankShift);
return true;
}

204
src/emucore/CartEnhanced.hxx Normal file
View File

@ -0,0 +1,204 @@
//============================================================================
//
// SSSS tt lll lll
// SS SS tt ll ll
// SS tttttt eeee ll ll aaaa
// SSSS tt ee ee ll ll aa
// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
// SS SS tt ee ll ll aa aa
// SSSS ttt eeeee llll llll aaaaa
//
// Copyright (c) 1995-2020 by Bradford W. Mott, Stephen Anthony
// and the Stella Team
//
// See the file "License.txt" for information on usage and redistribution of
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#ifndef CARTRIDGEENHANCED_HXX
#define CARTRIDGEENHANCED_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
/**
Enhanced cartridge base class used for multiple cart types.
@author Thomas Jentzsch
*/
class CartridgeEnhanced : public Cartridge
{
public:
/**
Create a new cartridge using the specified image
@param image Pointer to the ROM image
@param size The size of the ROM image
@param md5 The md5sum of the ROM image
@param settings A reference to the various settings (read-only)
*/
CartridgeEnhanced(const ByteBuffer& image, size_t size, const string& md5,
const Settings& settings);
virtual ~CartridgeEnhanced() = default;
public:
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank, uInt16 slice);
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override { return this->bank(bank, 0); }
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
public:
/**
Get the byte at the specified address.
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
protected:
// Pointer to a dynamically allocated ROM image of the cartridge
ByteBuffer myImage{nullptr};
// Pointer to a dynamically allocated RAM area of the cartridge
ByteBuffer myRAM{nullptr};
uInt16 myBankShift{BANK_SHIFT};
uInt16 myBankSize{BANK_SIZE};
uInt16 myBankMask{BANK_MASK};
uInt16 myRamSize{RAM_SIZE};
uInt16 myRamMask{RAM_MASK};
bool myDirectPeek{true};
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
// Indicates the slice mapped into each of the bank segments
WordBuffer myCurrentBankOffset{nullptr};
private:
// log(ROM bank size) / log(2)
static constexpr uInt16 BANK_SHIFT = 12;
// bank size
static constexpr uInt16 BANK_SIZE = 1 << BANK_SHIFT; // 2 ^ 12 = 4K
// bank mask
static constexpr uInt16 BANK_MASK = BANK_SIZE - 1;
// bank segments
static constexpr uInt16 BANK_SEGS = 1;
// RAM size
static constexpr uInt16 RAM_SIZE = 0;
// RAM mask
static constexpr uInt16 RAM_MASK = 0;
// Size of the ROM image
size_t mySize{0};
protected:
/**
Check hotspots and switch bank if triggered.
*/
virtual bool checkSwitchBank(uInt16 address, uInt8 value = 0) = 0;
private:
virtual uInt16 getStartBank() const { return 0; }
virtual uInt16 romHotspot() const { return 0; }
private:
// Following constructors and assignment operators not supported
CartridgeEnhanced() = delete;
CartridgeEnhanced(const CartridgeEnhanced&) = delete;
CartridgeEnhanced(CartridgeEnhanced&&) = delete;
CartridgeEnhanced& operator=(const CartridgeEnhanced&) = delete;
CartridgeEnhanced& operator=(CartridgeEnhanced&&) = delete;
};
#endif

152
src/emucore/CartF0.cxx
View File

@ -15,159 +15,25 @@
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "System.hxx"
#include "CartF0.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeF0::CartridgeF0(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeEnhanced(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF0::reset()
bool CartridgeF0::checkSwitchBank(uInt16 address, uInt8)
{
// Upon reset we switch to the startup bank
initializeStartBank(15);
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF0::install(System& system)
{
mySystem = &system;
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeF0::peek(uInt16 address)
{
address &= 0x0FFF;
// Switch to next bank
// Switch banks if necessary
if(address == 0x0FF0)
incbank();
return myImage[myBankOffset + address];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF0::poke(uInt16 address, uInt8)
{
address &= 0x0FFF;
// Switch to next bank
if(address == 0x0FF0)
incbank();
{
// Switch to next bank
uInt8 nextBank = ((getBank()) + 1) & 0x0F;
bank(nextBank);
return true;
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF0::incbank()
{
// Determine current bank, and increment to the next one
uInt8 nextBank = ((myBankOffset >> 12) + 1) & 0x0F;
bank(nextBank);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF0::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (0x1FF0 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for(uInt16 addr = 0x1000; addr < static_cast<uInt16>(0x1FF0U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF0::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF0::bankCount() const
{
return 16;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF0::patch(uInt16 address, uInt8 value)
{
myImage[myBankOffset + (address & 0x0FFF)] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeF0::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF0::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
}
catch(...)
{
cerr << "ERROR: CartridgeF0::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF0::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
}
catch(...)
{
cerr << "ERROR: CartridgeF0::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
}

104
src/emucore/CartF0.hxx
View File

@ -18,10 +18,7 @@
#ifndef CARTRIDGEF0_HXX
#define CARTRIDGEF0_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartEnhanced.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartF0Widget.hxx"
#endif
@ -31,9 +28,9 @@ class System;
There are 16 4K banks.
Accessing $1FF0 switches to next bank.
@author Eckhard Stolberg
@author Eckhard Stolberg, Thomas Jentzsch
*/
class CartridgeF0 : public Cartridge
class CartridgeF0 : public CartridgeEnhanced
{
friend class CartridgeF0Widget;
@ -51,71 +48,6 @@ class CartridgeF0 : public Cartridge
virtual ~CartridgeF0() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -135,35 +67,13 @@ class CartridgeF0 : public Cartridge
}
#endif
public:
/**
Get the byte at the specified address.
protected:
bool checkSwitchBank(uInt16 address, uInt8 value = 0);
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
uInt16 romHotspot() const override { return 0x1FF0; }
private:
/**
Install pages for the next bank in the system
*/
void incbank();
private:
// The 64K ROM image of the cartridge
std::array<uInt8, 64_KB> myImage;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
uInt16 getStartBank() const override { return 15; }
private:
// Following constructors and assignment operators not supported

139
src/emucore/CartF4.cxx
View File

@ -15,155 +15,24 @@
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "Random.hxx"
#include "System.hxx"
#include "CartF4.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeF4::CartridgeF4(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeEnhanced(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF4::reset()
bool CartridgeF4::checkSwitchBank(uInt16 address, uInt8)
{
// Upon reset we switch to the startup bank
initializeStartBank(0);
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF4::install(System& system)
{
mySystem = &system;
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeF4::peek(uInt16 address)
{
address &= 0x0FFF;
// Switch banks if necessary
// Note: addresses could be calculated from hotspot and bank count
if((address >= 0x0FF4) && (address <= 0x0FFB))
{
bank(address - 0x0FF4);
return true;
}
return myImage[myBankOffset + address];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4::poke(uInt16 address, uInt8)
{
address &= 0x0FFF;
// Switch banks if necessary
if((address >= 0x0FF4) && (address <= 0x0FFB))
{
bank(address - 0x0FF4);
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (0x1FF4 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for(uInt16 addr = 0x1000; addr < static_cast<uInt16>(0x1FF4U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF4::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF4::bankCount() const
{
return 8;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4::patch(uInt16 address, uInt8 value)
{
myImage[myBankOffset + (address & 0x0FFF)] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeF4::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
}
catch(...)
{
cerr << "ERROR: CartridgeF4::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
}
catch(...)
{
cerr << "ERROR: CartridgeF4::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
}

101
src/emucore/CartF4.hxx
View File

@ -18,10 +18,7 @@
#ifndef CARTRIDGEF4_HXX
#define CARTRIDGEF4_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartEnhanced.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartF4Widget.hxx"
#endif
@ -30,9 +27,9 @@ class System;
Cartridge class used for Atari's 32K bankswitched games. There are eight
4K banks, accessible by read/write to $1FF4 - $1FFB.
@author Bradford W. Mott
@author Bradford W. Mott, Thomas Jentzsch
*/
class CartridgeF4 : public Cartridge
class CartridgeF4 : public CartridgeEnhanced
{
friend class CartridgeF4Widget;
@ -50,71 +47,6 @@ class CartridgeF4 : public Cartridge
virtual ~CartridgeF4() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -134,31 +66,12 @@ class CartridgeF4 : public Cartridge
}
#endif
public:
/**
Get the byte at the specified address.
protected:
bool checkSwitchBank(uInt16 address, uInt8 value = 0);
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
uInt16 romHotspot() const override { return 0x1FF4; }
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
private:
// The 32K ROM image of the cartridge
std::array<uInt8, 32_KB> myImage;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
private:
private:
// Following constructors and assignment operators not supported
CartridgeF4() = delete;
CartridgeF4(const CartridgeF4&) = delete;

204
src/emucore/CartF4SC.cxx
View File

@ -15,211 +15,13 @@
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "System.hxx"
#include "CartF4SC.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeF4SC::CartridgeF4SC(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeF4(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF4SC::reset()
{
initializeRAM(myRAM.data(), myRAM.size());
initializeStartBank(0);
// Upon reset we switch to the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF4SC::install(System& system)
{
mySystem = &system;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing method for the RAM writing pages
// Map access to this class, since we need to inspect all accesses to
// check if RWP happens
access.type = System::PageAccessType::WRITE;
for(uInt16 addr = 0x1000; addr < 0x1080; addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[addr & 0x007F];
access.romPeekCounter = &myRomAccessCounter[addr & 0x007F];
access.romPokeCounter = &myRomAccessCounter[(addr & 0x07F) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Set the page accessing method for the RAM reading pages
access.type = System::PageAccessType::READ;
for(uInt16 addr = 0x1080; addr < 0x1100; addr += System::PAGE_SIZE)
{
access.directPeekBase = &myRAM[addr & 0x007F];
access.romAccessBase = &myRomAccessBase[0x80 + (addr & 0x007F)];
access.romPeekCounter = &myRomAccessCounter[0x80 + (addr & 0x007F)];
access.romPokeCounter = &myRomAccessCounter[0x80 + (addr & 0x007F) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeF4SC::peek(uInt16 address)
{
uInt16 peekAddress = address;
address &= 0x0FFF;
// Switch banks if necessary
if((address >= 0x0FF4) && (address <= 0x0FFB))
bank(address - 0x0FF4);
if(address < 0x0080) // Write port is at 0xF000 - 0xF07F (128 bytes)
return peekRAM(myRAM[address], peekAddress);
else
return myImage[myBankOffset + address];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4SC::poke(uInt16 address, uInt8 value)
{
uInt16 pokeAddress = address;
address &= 0x0FFF;
// Switch banks if necessary
if((address >= 0x0FF4) && (address <= 0x0FFB))
{
bank(address - 0x0FF4);
return false;
}
if(!(address & 0x080))
{
pokeRAM(myRAM[address & 0x007F], pokeAddress, value);
return true;
}
else
{
// Writing to the read port should be ignored, but trigger a break if option enabled
uInt8 dummy;
pokeRAM(dummy, pokeAddress, value);
myRamWriteAccess = pokeAddress;
return false;
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4SC::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (0x1FF4 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for(uInt16 addr = 0x1100; addr < static_cast<uInt16>(0x1FF4U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF4SC::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF4SC::bankCount() const
{
return 8;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4SC::patch(uInt16 address, uInt8 value)
{
address &= 0x0FFF;
if(address < 0x0100)
{
// Normally, a write to the read port won't do anything
// However, the patch command is special in that ignores such
// cart restrictions
myRAM[address & 0x007F] = value;
}
else
myImage[myBankOffset + address] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeF4SC::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4SC::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
out.putByteArray(myRAM.data(), myRAM.size());
}
catch(...)
{
cerr << "ERROR: CartridgeF4SC::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF4SC::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
in.getByteArray(myRAM.data(), myRAM.size());
}
catch(...)
{
cerr << "ERROR: CartridgeF4SC::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
myRamSize = RAM_SIZE;
myRamMask = RAM_MASK;
}

102
src/emucore/CartF4SC.hxx
View File

@ -18,10 +18,7 @@
#ifndef CARTRIDGEF4SC_HXX
#define CARTRIDGEF4SC_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartF4.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartF4SCWidget.hxx"
#endif
@ -31,9 +28,9 @@ class System;
RAM. There are eight 4K banks, accessible by read/write to $1FF4 - $1FFB.
RAM read port is $1080 - $10FF, write port is $1000 - $107F.
@author Bradford W. Mott
@author Bradford W. Mott, Thomas Jentzsch
*/
class CartridgeF4SC : public Cartridge
class CartridgeF4SC : public CartridgeF4
{
friend class CartridgeF4SCWidget;
@ -51,71 +48,6 @@ class CartridgeF4SC : public Cartridge
virtual ~CartridgeF4SC() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -135,32 +67,12 @@ class CartridgeF4SC : public Cartridge
}
#endif
public:
/**
Get the byte at the specified address.
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
private:
// The 32K ROM image of the cartridge
std::array<uInt8, 32_KB> myImage;
// RAM size
static constexpr uInt16 RAM_SIZE = 0x80;
// The 128 bytes of RAM
std::array<uInt8, 128> myRAM;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
// RAM mask
static constexpr uInt16 RAM_MASK = RAM_SIZE - 1;
private:
// Following constructors and assignment operators not supported

182
src/emucore/CartF6.cxx
View File

@ -15,195 +15,25 @@
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "System.hxx"
#include "CartF6.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeF6::CartridgeF6(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeEnhanced(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF6::reset()
bool CartridgeF6::checkSwitchBank(uInt16 address, uInt8)
{
// Upon reset we switch to the startup bank
initializeStartBank(0);
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF6::install(System& system)
{
mySystem = &system;
// Upon install we'll setup the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeF6::peek(uInt16 address)
{
address &= 0x0FFF;
// Switch banks if necessary
switch(address)
// Note: addresses could be calculated from hotspot and bank count
if((address >= 0x0FF6) && (address <= 0x0FF9))
{
case 0x0FF6:
// Set the current bank to the first 4k bank
bank(0);
break;
case 0x0FF7:
// Set the current bank to the second 4k bank
bank(1);
break;
case 0x0FF8:
// Set the current bank to the third 4k bank
bank(2);
break;
case 0x0FF9:
// Set the current bank to the forth 4k bank
bank(3);
break;
default:
break;
}
return myImage[myBankOffset + address];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6::poke(uInt16 address, uInt8)
{
address &= 0x0FFF;
// Switch banks if necessary
switch(address)
{
case 0x0FF6:
// Set the current bank to the first 4k bank
bank(0);
break;
case 0x0FF7:
// Set the current bank to the second 4k bank
bank(1);
break;
case 0x0FF8:
// Set the current bank to the third 4k bank
bank(2);
break;
case 0x0FF9:
// Set the current bank to the forth 4k bank
bank(3);
break;
default:
break;
bank(address - 0x0FF6);
return true;
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (0x1FF6 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for(uInt16 addr = 0x1000; addr < static_cast<uInt16>(0x1FF6U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF6::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF6::bankCount() const
{
return 4;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6::patch(uInt16 address, uInt8 value)
{
myImage[myBankOffset + (address & 0x0FFF)] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeF6::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
}
catch(...)
{
cerr << "ERROR: CartridgeF6::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
}
catch(...)
{
cerr << "ERROR: CartridgeF6::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
}

99
src/emucore/CartF6.hxx
View File

@ -18,10 +18,7 @@
#ifndef CARTRIDGEF6_HXX
#define CARTRIDGEF6_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartEnhanced.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartF6Widget.hxx"
#endif
@ -30,9 +27,9 @@ class System;
Cartridge class used for Atari's 16K bankswitched games. There are four
4K banks, accessible by read/write to $1FF6 - $1FF9.
@author Bradford W. Mott
@author Bradford W. Mott, Thomas Jentzsch
*/
class CartridgeF6 : public Cartridge
class CartridgeF6 : public CartridgeEnhanced
{
friend class CartridgeF6Widget;
@ -50,71 +47,6 @@ class CartridgeF6 : public Cartridge
virtual ~CartridgeF6() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -134,29 +66,10 @@ class CartridgeF6 : public Cartridge
}
#endif
public:
/**
Get the byte at the specified address.
protected:
bool checkSwitchBank(uInt16 address, uInt8 value = 0) override;
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
private:
// The 16K ROM image of the cartridge
std::array<uInt8, 16_KB> myImage;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
uInt16 romHotspot() const override { return 0x1FF6; }
private:
// Following constructors and assignment operators not supported

244
src/emucore/CartF6SC.cxx
View File

@ -15,251 +15,13 @@
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "System.hxx"
#include "CartF6SC.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeF6SC::CartridgeF6SC(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeF6(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF6SC::reset()
{
initializeRAM(myRAM.data(), myRAM.size());
initializeStartBank(0);
// Upon reset we switch to the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF6SC::install(System& system)
{
mySystem = &system;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing method for the RAM writing pages
// Map access to this class, since we need to inspect all accesses to
// check if RWP happens
access.type = System::PageAccessType::WRITE;
for(uInt16 addr = 0x1000; addr < 0x1080; addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[addr & 0x007F];
access.romPeekCounter = &myRomAccessCounter[addr & 0x007F];
access.romPokeCounter = &myRomAccessCounter[(addr & 0x07F) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Set the page accessing method for the RAM reading pages
access.type = System::PageAccessType::READ;
for(uInt16 addr = 0x1080; addr < 0x1100; addr += System::PAGE_SIZE)
{
access.directPeekBase = &myRAM[addr & 0x007F];
access.romAccessBase = &myRomAccessBase[0x80 + (addr & 0x007F)];
access.romPeekCounter = &myRomAccessCounter[0x80 + (addr & 0x007F)];
access.romPokeCounter = &myRomAccessCounter[0x80 + (addr & 0x007F) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeF6SC::peek(uInt16 address)
{
uInt16 peekAddress = address;
address &= 0x0FFF;
// Switch banks if necessary
switch(address)
{
case 0x0FF6:
// Set the current bank to the first 4k bank
bank(0);
break;
case 0x0FF7:
// Set the current bank to the second 4k bank
bank(1);
break;
case 0x0FF8:
// Set the current bank to the third 4k bank
bank(2);
break;
case 0x0FF9:
// Set the current bank to the forth 4k bank
bank(3);
break;
default:
break;
}
if(address < 0x0080) // Write port is at 0xF000 - 0xF07F (128 bytes)
return peekRAM(myRAM[address], peekAddress);
else
return myImage[myBankOffset + address];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6SC::poke(uInt16 address, uInt8 value)
{
// Switch banks if necessary
switch(address & 0x0FFF)
{
case 0x0FF6:
// Set the current bank to the first 4k bank
bank(0);
return false;
case 0x0FF7:
// Set the current bank to the second 4k bank
bank(1);
return false;
case 0x0FF8:
// Set the current bank to the third 4k bank
bank(2);
return false;
case 0x0FF9:
// Set the current bank to the forth 4k bank
bank(3);
return false;
default:
break;
}
if(!(address & 0x080))
{
pokeRAM(myRAM[address & 0x007F], address, value);
return true;
}
else
{
// Writing to the read port should be ignored, but trigger a break if option enabled
uInt8 dummy;
pokeRAM(dummy, address, value);
myRamWriteAccess = address;
return false;
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6SC::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (0x1FF6 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for(uInt16 addr = 0x1100; addr < static_cast<uInt16>(0x1FF6U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF6SC::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF6SC::bankCount() const
{
return 4;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6SC::patch(uInt16 address, uInt8 value)
{
address &= 0x0FFF;
if(address < 0x0100)
{
// Normally, a write to the read port won't do anything
// However, the patch command is special in that ignores such
// cart restrictions
myRAM[address & 0x007F] = value;
}
else
myImage[myBankOffset + address] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeF6SC::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6SC::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
out.putByteArray(myRAM.data(), myRAM.size());
}
catch(...)
{
cerr << "ERROR: CartridgeF6SC::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF6SC::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
in.getByteArray(myRAM.data(), myRAM.size());
}
catch(...)
{
cerr << "ERROR: CartridgeF6SC::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
myRamSize = RAM_SIZE;
myRamMask = RAM_MASK;
}

102
src/emucore/CartF6SC.hxx
View File

@ -18,10 +18,7 @@
#ifndef CARTRIDGEF6SC_HXX
#define CARTRIDGEF6SC_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartF6.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartF6SCWidget.hxx"
#endif
@ -31,9 +28,9 @@ class System;
RAM. There are four 4K banks, accessible by read/write to $1FF6 - $1FF9.
RAM read port is $1080 - $10FF, write port is $1000 - $107F.
@author Bradford W. Mott
@author Bradford W. Mott, Thomas Jentzsch
*/
class CartridgeF6SC : public Cartridge
class CartridgeF6SC : public CartridgeF6
{
friend class CartridgeF6SCWidget;
@ -51,71 +48,6 @@ class CartridgeF6SC : public Cartridge
virtual ~CartridgeF6SC() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -135,32 +67,12 @@ class CartridgeF6SC : public Cartridge
}
#endif
public:
/**
Get the byte at the specified address.
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
private:
// The 16K ROM image of the cartridge
std::array<uInt8, 16_KB> myImage;
// RAM size
static constexpr uInt16 RAM_SIZE = 0x80;
// The 128 bytes of RAM
std::array<uInt8, 128> myRAM;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
// RAM mask
static constexpr uInt16 RAM_MASK = RAM_SIZE - 1;
private:
// Following constructors and assignment operators not supported

151
src/emucore/CartF8.cxx
View File

@ -15,176 +15,33 @@
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "System.hxx"
#include "CartF8.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeF8::CartridgeF8(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeEnhanced(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF8::reset()
bool CartridgeF8::checkSwitchBank(uInt16 address, uInt8)
{
initializeStartBank(1);
// Upon reset we switch to the reset bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF8::install(System& system)
{
mySystem = &system;
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeF8::peek(uInt16 address)
{
address &= 0x0FFF;
// Switch banks if necessary
switch(address)
{
case 0x0FF8:
// Set the current bank to the lower 4k bank
bank(0);
break;
return true;
case 0x0FF9:
// Set the current bank to the upper 4k bank
bank(1);
break;
default:
break;
}
return myImage[myBankOffset + address];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8::poke(uInt16 address, uInt8)
{
address &= 0x0FFF;
// Switch banks if necessary
switch(address)
{
case 0x0FF8:
// Set the current bank to the lower 4k bank
bank(0);
break;
case 0x0FF9:
// Set the current bank to the upper 4k bank
bank(1);
break;
return true;
default:
break;
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (0x1FF8 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for(uInt16 addr = 0x1000; addr < static_cast<uInt16>(0x1FF8U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF8::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF8::bankCount() const
{
return 2;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8::patch(uInt16 address, uInt8 value)
{
myImage[myBankOffset + (address & 0x0FFF)] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeF8::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
}
catch(...)
{
cerr << "ERROR: CartridgeF8::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
}
catch(...)
{
cerr << "ERROR: CartridgeF8::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
}

98
src/emucore/CartF8.hxx
View File

@ -18,10 +18,7 @@
#ifndef CARTRIDGEF8_HXX
#define CARTRIDGEF8_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartEnhanced.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartF8Widget.hxx"
#endif
@ -30,9 +27,9 @@ class System;
Cartridge class used for Atari's 8K bankswitched games. There are two
4K banks, accessible by read/write to $1FF8 - $1FF9.
@author Bradford W. Mott
@author Bradford W. Mott, Thomas Jentzsch
*/
class CartridgeF8 : public Cartridge
class CartridgeF8 : public CartridgeEnhanced
{
friend class CartridgeF8Widget;
@ -50,71 +47,6 @@ class CartridgeF8 : public Cartridge
virtual ~CartridgeF8() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -134,29 +66,13 @@ class CartridgeF8 : public Cartridge
}
#endif
public:
/**
Get the byte at the specified address.
protected:
bool checkSwitchBank(uInt16 address, uInt8 value = 0) override;
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
uInt16 romHotspot() const override { return 0x1FF8; }
private:
// The 8K ROM image of the cartridge
std::array<uInt8, 8_KB> myImage;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
uInt16 getStartBank() const override { return 1; }
private:
// Following constructors and assignment operators not supported

224
src/emucore/CartF8SC.cxx
View File

@ -15,231 +15,13 @@
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
//============================================================================
#include "System.hxx"
#include "CartF8SC.hxx"
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeF8SC::CartridgeF8SC(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeF8(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF8SC::reset()
{
initializeRAM(myRAM.data(), myRAM.size());
initializeStartBank(1);
// Upon reset we switch to the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeF8SC::install(System& system)
{
mySystem = &system;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing method for the RAM writing pages
// Map access to this class, since we need to inspect all accesses to
// check if RWP happens
access.type = System::PageAccessType::WRITE;
for(uInt16 addr = 0x1000; addr < 0x1080; addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[addr & 0x007F];
access.romPeekCounter = &myRomAccessCounter[addr & 0x007F];
access.romPokeCounter = &myRomAccessCounter[(addr & 0x07F) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Set the page accessing method for the RAM reading pages
access.type = System::PageAccessType::READ;
for(uInt16 addr = 0x1080; addr < 0x1100; addr += System::PAGE_SIZE)
{
access.directPeekBase = &myRAM[addr & 0x007F];
access.romAccessBase = &myRomAccessBase[0x80 + (addr & 0x007F)];
access.romPeekCounter = &myRomAccessCounter[0x80 + (addr & 0x007F)];
access.romPokeCounter = &myRomAccessCounter[0x80 + (addr & 0x007F) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeF8SC::peek(uInt16 address)
{
uInt16 peekAddress = address;
address &= 0x0FFF;
// Switch banks if necessary
switch(address)
{
case 0x0FF8:
// Set the current bank to the lower 4k bank
bank(0);
break;
case 0x0FF9:
// Set the current bank to the upper 4k bank
bank(1);
break;
default:
break;
}
if(address < 0x0080) // Write port is at 0xF000 - 0xF07F (128 bytes)
return peekRAM(myRAM[address], peekAddress);
else
return myImage[myBankOffset + address];
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8SC::poke(uInt16 address, uInt8 value)
{
// Switch banks if necessary
switch(address & 0x0FFF)
{
case 0x0FF8:
// Set the current bank to the lower 4k bank
bank(0);
return false;
case 0x0FF9:
// Set the current bank to the upper 4k bank
bank(1);
return false;
default:
break;
}
if (!(address & 0x080))
{
pokeRAM(myRAM[address & 0x007F], address, value);
return true;
}
else
{
// Writing to the read port should be ignored, but trigger a break if option enabled
uInt8 dummy;
pokeRAM(dummy, address, value);
myRamWriteAccess = address;
return false;
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8SC::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for(uInt16 addr = (0x1FF8 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for(uInt16 addr = 0x1100; addr < static_cast<uInt16>(0x1FF8U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF8SC::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeF8SC::bankCount() const
{
return 2;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8SC::patch(uInt16 address, uInt8 value)
{
address &= 0x0FFF;
if(address < 0x0100)
{
// Normally, a write to the read port won't do anything
// However, the patch command is special in that ignores such
// cart restrictions
myRAM[address & 0x007F] = value;
}
else
myImage[myBankOffset + address] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeF8SC::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8SC::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
out.putByteArray(myRAM.data(), myRAM.size());
}
catch(...)
{
cerr << "ERROR: CartridgeF8SC::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeF8SC::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
in.getByteArray(myRAM.data(), myRAM.size());
}
catch(...)
{
cerr << "ERROR: CartridgeF8SC::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
myRamSize = RAM_SIZE;
myRamMask = RAM_MASK;
}

102
src/emucore/CartF8SC.hxx
View File

@ -18,10 +18,7 @@
#ifndef CARTRIDGEF8SC_HXX
#define CARTRIDGEF8SC_HXX
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartF8.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartF8SCWidget.hxx"
#endif
@ -31,9 +28,9 @@ class System;
RAM. There are two 4K banks, accessible by read/write to $1FF8 - $1FF9.
RAM read port is $1080 - $10FF, write port is $1000 - $107F.
@author Bradford W. Mott
@author Bradford W. Mott, Thomas Jentzsch
*/
class CartridgeF8SC : public Cartridge
class CartridgeF8SC : public CartridgeF8
{
friend class CartridgeF8SCWidget;
@ -51,71 +48,6 @@ class CartridgeF8SC : public Cartridge
virtual ~CartridgeF8SC() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -135,32 +67,12 @@ class CartridgeF8SC : public Cartridge
}
#endif
public:
/**
Get the byte at the specified address.
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@param address The address where the value should be stored
@param value The value to be stored at the address
@return True if the poke changed the device address space, else false
*/
bool poke(uInt16 address, uInt8 value) override;
private:
// The 8K ROM image of the cartridge
std::array<uInt8, 8_KB> myImage;
// RAM size
static constexpr uInt16 RAM_SIZE = 0x80;
// The 128 bytes of RAM
std::array<uInt8, 128> myRAM;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
// RAM mask
static constexpr uInt16 RAM_MASK = RAM_SIZE - 1;
private:
// Following constructors and assignment operators not supported

133
src/emucore/CartFC.cxx
View File

@ -21,52 +21,35 @@
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeFC::CartridgeFC(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5),
mySize(size)
: CartridgeEnhanced(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeFC::reset()
{
initializeStartBank(0);
CartridgeEnhanced::reset();
myTargetBank = 0;
// Upon reset we switch to the reset bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeFC::install(System& system)
bool CartridgeFC::checkSwitchBank(uInt16 address, uInt8)
{
mySystem = &system;
// Install pages for the startup bank
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeFC::peek(uInt16 address)
{
address &= 0x0FFF;
// Switch banks if necessary
if(address == 0x0FFC)
{
// Trigger the bank switch
bank(myTargetBank);
return true;
}
return myImage[myBankOffset + address];
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFC::poke(uInt16 address, uInt8 value)
{
address &= 0x0FFF;
address &= myBankMask;
// Switch banks if necessary
switch (address)
@ -88,108 +71,8 @@ bool CartridgeFC::poke(uInt16 address, uInt8 value)
myTargetBank = value % bankCount();
break;
case 0x0FFC:
// Trigger the bank switch
bank(myTargetBank);
break;
default:
break;
checkSwitchBank(address);
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFC::bank(uInt16 bank)
{
if (bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Set the page accessing methods for the hot spots
for (uInt16 addr = (0x1FF8 & ~System::PAGE_MASK); addr < 0x2000;
addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
// Setup the page access methods for the current bank
for (uInt16 addr = 0x1000; addr < static_cast<uInt16>(0x1FF8U & ~System::PAGE_MASK);
addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
myCurrentBank = myTargetBank;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeFC::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeFC::bankCount() const
{
return uInt16(mySize >> 12);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFC::patch(uInt16 address, uInt8 value)
{
myImage[myBankOffset + (address & 0x0FFF)] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeFC::getImage(size_t& size) const
{
size = mySize;
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFC::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
}
catch (...)
{
cerr << "ERROR: CartridgeFC::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFC::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
}
catch (...)
{
cerr << "ERROR: CartridgeFC::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
}

90
src/emucore/CartFC.hxx
View File

@ -21,7 +21,7 @@
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartEnhanced.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartFCWidget.hxx"
@ -30,12 +30,12 @@ class System;
/**
Cartridge class used for Amiga's 32K Power Play Arcade Video Game Album.
There are eight 4K banks, writing to $1FF8 definies the two lowest bits
of the wanted bank, writeing to $1FF9 defines the high bits. Reading from
of the wanted bank, writeing to $1FF9 defines the high bits. Accessing
$1FFC triggers the bank switching
@author Thomas Jentzsch
*/
class CartridgeFC : public Cartridge
class CartridgeFC : public CartridgeEnhanced
{
friend class CartridgeFCWidget;
@ -58,66 +58,6 @@ class CartridgeFC : public Cartridge
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@param system The system the device should install itself in
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -138,13 +78,6 @@ class CartridgeFC : public Cartridge
#endif
public:
/**
Get the byte at the specified address.
@return The byte at the specified address
*/
uInt8 peek(uInt16 address) override;
/**
Change the byte at the specified address to the given value
@ -154,19 +87,12 @@ class CartridgeFC : public Cartridge
*/
bool poke(uInt16 address, uInt8 value) override;
protected:
bool checkSwitchBank(uInt16 address, uInt8 value = 0) override;
uInt16 romHotspot() const override { return 0x1FF8; }
private:
// The 32K ROM image of the cartridge
std::array<uInt8, 32_KB> myImage;
// Size of the ROM image
size_t mySize{0};
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
// Indicates which bank is currently active for the first segment
uInt16 myCurrentBank{0};
// Target bank defined by writing to $1FF8/9
uInt16 myTargetBank{0};

100
src/emucore/CartFE.cxx
View File

@ -22,20 +22,15 @@
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CartridgeFE::CartridgeFE(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings)
: Cartridge(settings, md5)
: CartridgeEnhanced(image, size, md5, settings)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
myDirectPeek = false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeFE::reset()
{
// Decathlon requires this, since there is no startup vector in bank 1
initializeStartBank(0);
bank(startBank());
CartridgeEnhanced::reset();
myLastAccessWasFE = false;
}
@ -51,14 +46,27 @@ void CartridgeFE::install(System& system)
mySystem->setPageAccess(addr, access);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFE::checkSwitchBank(uInt16 address, uInt8 value)
{
if(myLastAccessWasFE)
{
bank((value & 0x20) ? 0 : 1);
myLastAccessWasFE = false; // was: address == 0x01FE;
return true;
}
myLastAccessWasFE = address == 0x01FE;
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeFE::peek(uInt16 address)
{
uInt8 value = (address < 0x200) ? mySystem->m6532().peek(address) :
myImage[myBankOffset + (address & 0x0FFF)];
myImage[myBankOffset + (address & myBankMask)];
// Check if we hit hotspot
checkBankSwitch(address, value);
checkSwitchBank(address, value);
return value;
}
@ -70,83 +78,17 @@ bool CartridgeFE::poke(uInt16 address, uInt8 value)
mySystem->m6532().poke(address, value);
// Check if we hit hotspot
checkBankSwitch(address, value);
checkSwitchBank(address, value);
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeFE::checkBankSwitch(uInt16 address, uInt8 value)
{
if(bankLocked())
return;
// Did we detect $01FE on the last address bus access?
// If so, we bankswitch according to the upper 3 bits of the data bus
// NOTE: see the header file for the significance of 'value & 0x20'
if(myLastAccessWasFE)
bank((value & 0x20) ? 0 : 1);
// On the next cycle, we use the (then) current data bus value to decode
// the bank to use
myLastAccessWasFE = address == 0x01FE;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFE::bank(uInt16 bank)
{
if(bankLocked())
return false;
myBankOffset = bank << 12;
System::PageAccess access(this, System::PageAccessType::READ);
// Setup the page access methods for the current bank
// Map all of the cart accesses to call peek and poke
for(uInt16 addr = 0x1000; addr < 0x2000; addr += System::PAGE_SIZE)
{
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeFE::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeFE::bankCount() const
{
return 2;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFE::patch(uInt16 address, uInt8 value)
{
myImage[myBankOffset + (address & 0x0FFF)] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeFE::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFE::save(Serializer& out) const
{
CartridgeEnhanced::save(out);
try
{
out.putShort(myBankOffset);
out.putBool(myLastAccessWasFE);
}
catch(...)
@ -161,9 +103,9 @@ bool CartridgeFE::save(Serializer& out) const
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeFE::load(Serializer& in)
{
CartridgeEnhanced::load(in);
try
{
myBankOffset = in.getShort();
myLastAccessWasFE = in.getBool();
}
catch(...)

50
src/emucore/CartFE.hxx
View File

@ -21,7 +21,7 @@
class System;
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartEnhanced.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartFEWidget.hxx"
#endif
@ -75,7 +75,7 @@ class System;
@author Stephen Anthony; with ideas/research from Christian Speckner and
alex_79 and TomSon (of AtariAge)
*/
class CartridgeFE : public Cartridge
class CartridgeFE : public CartridgeEnhanced
{
friend class CartridgeFEWidget;
@ -106,42 +106,6 @@ class CartridgeFE : public Cartridge
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@ -194,20 +158,14 @@ class CartridgeFE : public Cartridge
*/
bool poke(uInt16 address, uInt8 value) override;
private:
protected:
/**
Perform bankswitch when necessary, by monitoring for $01FE
on the address bus and getting the bank number from the data bus.
*/
void checkBankSwitch(uInt16 address, uInt8 value);
bool checkSwitchBank(uInt16 address, uInt8 value) override;
private:
// The 8K ROM image of the cartridge
std::array<uInt8, 8_KB> myImage;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
// Whether previous address by peek/poke equals $01FE (hotspot)
bool myLastAccessWasFE{false};

2
src/emucore/CartMNetwork.hxx
View File

@ -106,7 +106,7 @@ class CartridgeMNetwork : public Cartridge
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;

133
src/emucore/CartUA.cxx
View File

@ -22,20 +22,9 @@
CartridgeUA::CartridgeUA(const ByteBuffer& image, size_t size,
const string& md5, const Settings& settings,
bool swapHotspots)
: Cartridge(settings, md5),
: CartridgeEnhanced(image, size, md5, settings),
mySwappedHotspots(swapHotspots)
{
// Copy the ROM image into my buffer
std::copy_n(image.get(), std::min(myImage.size(), size), myImage.begin());
createRomAccessArrays(myImage.size());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void CartridgeUA::reset()
{
// Upon reset we switch to the startup bank
initializeStartBank(0);
bank(startBank());
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@ -60,26 +49,33 @@ void CartridgeUA::install(System& system)
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeUA::peek(uInt16 address)
bool CartridgeUA::checkSwitchBank(uInt16 address, uInt8)
{
address &= 0x1FFF;
// Switch banks if necessary
switch(address & 0x1260)
{
case 0x0220:
// Set the current bank to the lower 4k bank
bank(mySwappedHotspots ? 1 : 0);
break;
return true;
case 0x0240:
// Set the current bank to the upper 4k bank
bank(mySwappedHotspots ? 0 : 1);
break;
return true;
default:
break;
}
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt8 CartridgeUA::peek(uInt16 address)
{
address &= myBankMask;
checkSwitchBank(address);
// Because of the way accessing is set up, we will only get here
// when doing a TIA read
@ -90,24 +86,9 @@ uInt8 CartridgeUA::peek(uInt16 address)
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeUA::poke(uInt16 address, uInt8 value)
{
address &= 0x1FFF;
address &= myBankMask;
// Switch banks if necessary
switch(address & 0x1260)
{
case 0x0220:
// Set the current bank to the lower 4k bank
bank(mySwappedHotspots ? 1 : 0);
break;
case 0x0240:
// Set the current bank to the upper 4k bank
bank(mySwappedHotspots ? 0 : 1);
break;
default:
break;
}
checkSwitchBank(address);
// Because of the way accessing is set up, we will may get here by
// doing a write to TIA or cart; we ignore the cart write
@ -119,87 +100,3 @@ bool CartridgeUA::poke(uInt16 address, uInt8 value)
return false;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeUA::bank(uInt16 bank)
{
if(bankLocked()) return false;
// Remember what bank we're in
myBankOffset = bank << 12;
// Setup the page access methods for the current bank
System::PageAccess access(this, System::PageAccessType::READ);
// Map ROM image into the system
for(uInt16 addr = 0x1000; addr < 0x2000; addr += System::PAGE_SIZE)
{
access.directPeekBase = &myImage[myBankOffset + (addr & 0x0FFF)];
access.romAccessBase = &myRomAccessBase[myBankOffset + (addr & 0x0FFF)];
access.romPeekCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF)];
access.romPokeCounter = &myRomAccessCounter[myBankOffset + (addr & 0x0FFF) + myAccessSize];
mySystem->setPageAccess(addr, access);
}
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeUA::getBank(uInt16) const
{
return myBankOffset >> 12;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt16 CartridgeUA::bankCount() const
{
return 2;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeUA::patch(uInt16 address, uInt8 value)
{
myImage[myBankOffset + (address & 0x0FFF)] = value;
return myBankChanged = true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
const uInt8* CartridgeUA::getImage(size_t& size) const
{
size = myImage.size();
return myImage.data();
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeUA::save(Serializer& out) const
{
try
{
out.putShort(myBankOffset);
}
catch(...)
{
cerr << "ERROR: " << name() << "::save" << endl;
return false;
}
return true;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
bool CartridgeUA::load(Serializer& in)
{
try
{
myBankOffset = in.getShort();
}
catch(...)
{
cerr << "ERROR: " << name() << "::load" << endl;
return false;
}
// Remember what bank we were in
bank(myBankOffset >> 12);
return true;
}

72
src/emucore/CartUA.hxx
View File

@ -19,7 +19,7 @@
#define CARTRIDGEUA_HXX
#include "bspf.hxx"
#include "Cart.hxx"
#include "CartEnhanced.hxx"
#include "System.hxx"
#ifdef DEBUGGER_SUPPORT
#include "CartUAWidget.hxx"
@ -30,9 +30,9 @@
are two 4K banks, which are switched by accessing $0220 (bank 0) and
$0240 (bank 1).
@author Bradford W. Mott
@author Bradford W. Mott, Thomas Jentzsch
*/
class CartridgeUA : public Cartridge
class CartridgeUA : public CartridgeEnhanced
{
friend class CartridgeUAWidget;
@ -51,11 +51,6 @@ class CartridgeUA : public Cartridge
virtual ~CartridgeUA() = default;
public:
/**
Reset device to its power-on state
*/
void reset() override;
/**
Install cartridge in the specified system. Invoked by the system
when the cartridge is attached to it.
@ -64,57 +59,6 @@ class CartridgeUA : public Cartridge
*/
void install(System& system) override;
/**
Install pages for the specified bank in the system.
@param bank The bank that should be installed in the system
*/
bool bank(uInt16 bank) override;
/**
Get the current bank.
@param address The address to use when querying the bank
*/
uInt16 getBank(uInt16 address = 0) const override;
/**
Query the number of banks supported by the cartridge.
*/
uInt16 bankCount() const override;
/**
Patch the cartridge ROM.
@param address The ROM address to patch
@param value The value to place into the address
@return Success or failure of the patch operation
*/
bool patch(uInt16 address, uInt8 value) override;
/**
Access the internal ROM image for this cartridge.
@param size Set to the size of the internal ROM image data
@return A pointer to the internal ROM image data
*/
const uInt8* getImage(size_t& size) const override;
/**
Save the current state of this cart to the given Serializer.
@param out The Serializer object to use
@return False on any errors, else true
*/
bool save(Serializer& out) const override;
/**
Load the current state of this cart from the given Serializer.
@param in The Serializer object to use
@return False on any errors, else true
*/
bool load(Serializer& in) override;
/**
Get a descriptor for the device name (used in error checking).
@ -152,16 +96,14 @@ class CartridgeUA : public Cartridge
*/
bool poke(uInt16 address, uInt8 value) override;
private:
// The 8K ROM image of the cartridge
std::array<uInt8, 8_KB> myImage;
protected:
bool checkSwitchBank(uInt16 address, uInt8 value = 0) override;
private:
// Previous Device's page access
std::array<System::PageAccess, 2> myHotSpotPageAccess;
// Indicates the offset into the ROM image (aligns to current bank)
uInt16 myBankOffset{0};
// Indicates if banks are swapped ("Mickey" cart)
bool mySwappedHotspots{false};

2
src/windows/Stella.vcxproj
View File

@ -717,6 +717,7 @@
<ClCompile Include="..\emucore\Bankswitch.cxx" />
<ClCompile Include="..\emucore\Cart3EPlus.cxx" />
<ClCompile Include="..\emucore\Cart4KSC.cxx" />
<ClCompile Include="..\emucore\CartEnhanced.cxx" />
<ClCompile Include="..\emucore\CartBF.cxx" />
<ClCompile Include="..\emucore\CartBFSC.cxx" />
<ClCompile Include="..\emucore\CartBUS.cxx" />
@ -1739,6 +1740,7 @@
<ClInclude Include="..\emucore\BSType.hxx" />
<ClInclude Include="..\emucore\Cart3EPlus.hxx" />
<ClInclude Include="..\emucore\Cart4KSC.hxx" />
<ClInclude Include="..\emucore\CartEnhanced.hxx" />
<ClInclude Include="..\emucore\CartBF.hxx" />
<ClInclude Include="..\emucore\CartBFSC.hxx" />
<ClInclude Include="..\emucore\CartBUS.hxx" />

6
src/windows/Stella.vcxproj.filters
View File

@ -1005,6 +1005,9 @@
<ClCompile Include="..\gui\MessageDialog.cxx">
<Filter>Source Files\gui</Filter>
</ClCompile>
<ClCompile Include="..\emucore\CartEnhanced.cxx">
<Filter>Source Files\emucore</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\common\bspf.hxx">
@ -2063,6 +2066,9 @@
<ClInclude Include="..\gui\Stella16x32tFont.hxx">
<Filter>Header Files\gui</Filter>
</ClInclude>
<ClInclude Include="..\emucore\CartEnhanced.hxx">
<Filter>Header Files\emucore</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<None Include="stella.ico">

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test/roms/bankswitching/2K/Xaxyrax Road by Charles Morgan (Freeway Hack).a26 Normal file
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test/roms/bankswitching/3E/3E Bankswitch Test (TIA @ $00).bin Normal file
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test/roms/bankswitching/3E/Andrew Davies early notBoulderDash demo (NTSC).bin Normal file
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test/roms/bankswitching/3E/Boulder Dash (Demo 2).bin Normal file
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test/roms/bankswitching/3F/Espial (1984) (Tigervision) (PAL).a26 Normal file
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test/roms/bankswitching/3F/Polaris (1983) (Thomas Jentzsch).a26 Normal file
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test/roms/bankswitching/3F/River Patrol (1984) (Tigervision).a26 Normal file
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test/roms/bankswitching/3F/Springer (1982) (Tigervision).a26 Normal file
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