mirror of https://github.com/stella-emu/stella.git
Added TV Boy bankswitching
This commit is contained in:
thrust26
parent
4466f470a3
commit
9026598d9e
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@ -0,0 +1,41 @@
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2020 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//============================================================================
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#include "CartTVBoy.hxx"
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#include "CartTVBoyWidget.hxx"
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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CartridgeTVBoyWidget::CartridgeTVBoyWidget(
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GuiObject* boss, const GUI::Font& lfont, const GUI::Font& nfont,
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int x, int y, int w, int h, CartridgeTVBoy& cart)
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: CartridgeEnhancedWidget(boss, lfont, nfont, x, y, w, h, cart)
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{
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initialize();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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string CartridgeTVBoyWidget::description()
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{
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ostringstream info;
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info << "TV Boy, " << myCart.romBankCount() << " 4K banks\n"
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<< "Hotspots are from $" << Common::Base::HEX2 << 0x1800 << " to $"
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<< Common::Base::HEX2 << (0x1800 + myCart.romBankCount() - 1) << "\n";
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info << "Startup bank = #" << std::dec << myCart.startBank();
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return info.str();
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}
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@ -0,0 +1,48 @@
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2020 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//============================================================================
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#ifndef CARTRIDGETVBOY_WIDGET_HXX
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#define CARTRIDGETVBOY_WIDGET_HXX
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class CartridgeTVBoy;
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#include "CartEnhancedWidget.hxx"
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class CartridgeTVBoyWidget : public CartridgeEnhancedWidget
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{
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public:
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CartridgeTVBoyWidget(GuiObject* boss, const GUI::Font& lfont,
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const GUI::Font& nfont,
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int x, int y, int w, int h,
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CartridgeTVBoy& cart);
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virtual ~CartridgeTVBoyWidget() = default;
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private:
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string manufacturer() override { return "Akor"; }
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string description() override;
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private:
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// Following constructors and assignment operators not supported
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CartridgeTVBoyWidget() = delete;
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CartridgeTVBoyWidget(const CartridgeTVBoyWidget&) = delete;
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CartridgeTVBoyWidget(CartridgeTVBoyWidget&&) = delete;
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CartridgeTVBoyWidget& operator=(const CartridgeTVBoyWidget&) = delete;
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CartridgeTVBoyWidget& operator=(CartridgeTVBoyWidget&&) = delete;
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};
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#endif
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@ -48,6 +48,7 @@ MODULE_OBJS := \
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src/debugger/gui/CartMDMWidget.o \
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src/debugger/gui/CartRamWidget.o \
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src/debugger/gui/CartSBWidget.o \
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src/debugger/gui/CartTVBoyWidget.o \
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src/debugger/gui/CartUAWidget.o \
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src/debugger/gui/CartWDWidget.o \
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src/debugger/gui/CartX07Widget.o \
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@ -0,0 +1,87 @@
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2020 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//============================================================================
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#include "System.hxx"
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#include "CartTVBoy.hxx"
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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CartridgeTVBoy::CartridgeTVBoy(const ByteBuffer& image, size_t size,
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const string& md5, const Settings& settings)
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: CartridgeEnhanced(image, size, md5, settings)
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool CartridgeTVBoy::checkSwitchBank(uInt16 address, uInt8)
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{
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// Switch banks if necessary
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if((address & ADDR_MASK) >= 0x1800 && (address & ADDR_MASK) <= 0x187F)
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{
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bank(address & (romBankCount() - 1));
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return true;
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}
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return false;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool CartridgeTVBoy::bank(uInt16 bank)
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{
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if(myBankingDisabled) return false;
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bool banked = CartridgeEnhanced::bank(bank);
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// Any bankswitching locks further bankswitching, we check for bank 0
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// to avoid locking on cart init.
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if (banked && bank != 0)
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myBankingDisabled = true;
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return banked;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool CartridgeTVBoy::save(Serializer& out) const
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{
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CartridgeEnhanced::save(out);
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try
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{
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out.putBool(myBankingDisabled);
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}
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catch(...)
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{
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cerr << "ERROR: CartridgeTVBoy::save" << endl;
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return false;
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}
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return true;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool CartridgeTVBoy::load(Serializer& in)
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{
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CartridgeEnhanced::load(in);
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try
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{
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myBankingDisabled = in.getBool();
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}
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catch(...)
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{
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cerr << "ERROR: CartridgeTVBoy::load" << endl;
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return false;
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}
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return true;
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}
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@ -0,0 +1,113 @@
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2020 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//============================================================================
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#ifndef CARTRIDGETVBOY_HXX
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#define CARTRIDGETVBOY_HXX
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#include "bspf.hxx"
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#include "CartEnhanced.hxx"
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#include "System.hxx"
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#ifdef DEBUGGER_SUPPORT
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#include "CartTVBoyWidget.hxx"
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#endif
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/**
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Cartridge class used for TV Boy
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There are 128 4K banks, accessing $F800..$F87F selects bank and locks any
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further bankswitching.
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@author Thomas Jentzsch
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*/
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class CartridgeTVBoy : public CartridgeEnhanced
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{
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friend class CartridgeMDMWidget;
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public:
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/**
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Create a new cartridge using the specified image
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@param image Pointer to the ROM image
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@param size The size of the ROM image
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@param md5 The md5sum of the ROM image
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@param settings A reference to the various settings (read-only)
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*/
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CartridgeTVBoy(const ByteBuffer& image, size_t size, const string& md5,
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const Settings& settings);
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virtual ~CartridgeTVBoy() = default;
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public:
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/**
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Install pages for the specified bank in the system.
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@param bank The bank that should be installed in the system
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*/
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bool bank(uInt16 bank) override;
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/**
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Save the current state of this cart to the given Serializer.
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@param out The Serializer object to use
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@return False on any errors, else true
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*/
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bool save(Serializer& out) const override;
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/**
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Load the current state of this cart from the given Serializer.
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@param in The Serializer object to use
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@return False on any errors, else true
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*/
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bool load(Serializer& in) override;
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/**
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Get a descriptor for the device name (used in error checking).
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@return The name of the object
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*/
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string name() const override { return "CartridgeTVBoy"; }
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#ifdef DEBUGGER_SUPPORT
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/**
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Get debugger widget responsible for accessing the inner workings
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of the cart.
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*/
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CartDebugWidget* debugWidget(GuiObject* boss, const GUI::Font& lfont,
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const GUI::Font& nfont, int x, int y, int w, int h) override
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{
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return new CartridgeTVBoyWidget(boss, lfont, nfont, x, y, w, h, *this);
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}
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#endif
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private:
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bool checkSwitchBank(uInt16 address, uInt8 value = 0) override;
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uInt16 hotspot() const override { return 0x1800; }
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private:
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// Indicates whether banking has been disabled due to a bankswitch
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bool myBankingDisabled{false};
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private:
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// Following constructors and assignment operators not supported
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CartridgeTVBoy() = delete;
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CartridgeTVBoy(const CartridgeTVBoy&) = delete;
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CartridgeTVBoy(CartridgeTVBoy&&) = delete;
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CartridgeTVBoy& operator=(const CartridgeTVBoy&) = delete;
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CartridgeTVBoy& operator=(CartridgeTVBoy&&) = delete;
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};
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#endif
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@ -47,6 +47,7 @@ MODULE_OBJS := \
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src/emucore/CartFE.o \
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src/emucore/CartMDM.o \
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src/emucore/CartSB.o \
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src/emucore/CartTVBoy.o \
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src/emucore/CartUA.o \
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src/emucore/CartWD.o \
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src/emucore/CartX07.o \
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