mirror of https://github.com/stella-emu/stella.git
Added 'DPC+' bankswitch scheme, as defined by SpiceWare and Batari from
AtariAge. Basically, this is an enhanced version of the DPC class used by Pitfall2. git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@1967 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
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@ -2779,6 +2779,7 @@ Ms Pac-Man (Stella extended codes):
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<tr><td>AR ²</td><td>Supercharger </td></tr>
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<tr><td>CV </td><td>Commavid extra ram </td></tr>
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<tr><td>DPC ²</td><td>Pitfall II </td></tr>
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<tr><td>DPC+ ²</td><td>Enhanced DPC </td></tr>
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<tr><td>E0 </td><td>8K Parker Bros </td></tr>
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<tr><td>E7 </td><td>16K M-network </td></tr>
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<tr><td>EF </td><td>64K Homestar Runner </td></tr>
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@ -30,6 +30,7 @@
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#include "Cart4K.hxx"
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#include "CartAR.hxx"
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#include "CartDPC.hxx"
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#include "CartDPCPlus.hxx"
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#include "CartE0.hxx"
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#include "CartE7.hxx"
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#include "CartEF.hxx"
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@ -144,6 +145,8 @@ Cartridge* Cartridge::create(const uInt8* image, uInt32 size, string& md5,
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cartridge = new CartridgeAR(image, size, settings);
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else if(type == "DPC")
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cartridge = new CartridgeDPC(image, size);
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else if(type == "DPC+")
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cartridge = new CartridgeDPCPlus(image, size);
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else if(type == "E0")
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cartridge = new CartridgeE0(image);
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else if(type == "E7")
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@ -317,7 +320,7 @@ string Cartridge::autodetectType(const uInt8* image, uInt32 size)
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else
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type = "4K";
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}
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else if(size == 8192) // 8K
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else if(size == 8*1024) // 8K
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{
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if(isProbablySC(image, size))
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type = "F8SC";
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@ -342,7 +345,7 @@ string Cartridge::autodetectType(const uInt8* image, uInt32 size)
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{
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type = "DPC";
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}
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else if(size == 12288) // 12K
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else if(size == 12*1024) // 12K
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{
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// TODO - this should really be in a method that checks the first
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// 512 bytes of ROM and finds if either the lower 256 bytes or
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@ -350,7 +353,7 @@ string Cartridge::autodetectType(const uInt8* image, uInt32 size)
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// all carts of 12K are CBS RAM Plus/FA.
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type = "FA";
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}
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else if(size == 16384) // 16K
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else if(size == 16*1024) // 16K
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{
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if(isProbablySC(image, size))
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type = "F6SC";
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@ -363,7 +366,11 @@ string Cartridge::autodetectType(const uInt8* image, uInt32 size)
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else
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type = "F6";
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}
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else if(size == 32768) // 32K
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else if(size == 28*1024) // 28K
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{
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type = "DPC+";
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}
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else if(size == 32*1024) // 32K
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{
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if(isProbablySC(image, size))
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type = "F4SC";
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@ -374,7 +381,7 @@ string Cartridge::autodetectType(const uInt8* image, uInt32 size)
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else
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type = "F4";
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}
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else if(size == 65536) // 64K
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else if(size == 64*1024) // 64K
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{
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if(isProbably3E(image, size))
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type = "3E";
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@ -33,7 +33,7 @@ CartridgeDPC::CartridgeDPC(const uInt8* image, uInt32 size)
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{
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// Make a copy of the entire image as-is, for use by getImage()
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// (this wastes 12K of RAM, should be controlled by a #ifdef)
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memcpy(myImageCopy, image, size);
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memcpy(myImageCopy, image, BSPF_min(size, 8192u + 2048u + 255u));
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// Copy the program ROM image into my buffer
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memcpy(myProgramImage, image, 8192);
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@ -16,8 +16,8 @@
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// $Id$
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//============================================================================
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#ifndef CARTRIDGEDCP_HXX
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#define CARTRIDGEDCP_HXX
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#ifndef CARTRIDGE_DPC_HXX
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#define CARTRIDGE_DPC_HXX
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class System;
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@ -0,0 +1,633 @@
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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) 1995-2010 by Bradford W. Mott 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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// $Id$
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//============================================================================
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#include <cassert>
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#include <cstring>
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#include <iostream>
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#include "System.hxx"
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#include "CartDPCPlus.hxx"
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// TODO - properly handle read from write port functionality
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// Note: do r/w port restrictions even exist for this scheme??
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// Port to new CartDebug/disassembler scheme
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// Add bankchanged code
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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CartridgeDPCPlus::CartridgeDPCPlus(const uInt8* image, uInt32 size)
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{
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// Make a copy of the entire image as-is, for use by getImage()
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// (this wastes 28K of RAM, should be controlled by a #ifdef)
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memcpy(myImageCopy, image, size);
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// Copy the program ROM image into my buffer
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memcpy(myProgramImage, image, 4096 * 6);
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// Copy the display ROM image into my buffer
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memcpy(myDisplayImage, image + 4096 * 6, 4096);
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// Initialize the DPC data fetcher registers
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for(uInt16 i = 0; i < 8; ++i)
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myTops[i] = myBottoms[i] = myCounters[i] = myFlags[i] = 0;
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// None of the data fetchers are in music mode
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myMusicMode[0] = myMusicMode[1] = myMusicMode[2] = false;
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// Initialize the DPC's random number generator register (must be non-zero)
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myRandomNumber = 1;
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// Initialize the system cycles counter & fractional clock values
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mySystemCycles = 0;
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myFractionalClocks = 0.0;
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// Remember startup bank
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myStartBank = 1;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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CartridgeDPCPlus::~CartridgeDPCPlus()
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void CartridgeDPCPlus::reset()
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{
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// Update cycles to the current system cycles
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mySystemCycles = mySystem->cycles();
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myFractionalClocks = 0.0;
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// Upon reset we switch to the startup bank
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bank(myStartBank);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void CartridgeDPCPlus::systemCyclesReset()
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{
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// Get the current system cycle
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uInt32 cycles = mySystem->cycles();
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// Adjust the cycle counter so that it reflects the new value
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mySystemCycles -= cycles;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void CartridgeDPCPlus::install(System& system)
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{
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mySystem = &system;
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uInt16 shift = mySystem->pageShift();
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uInt16 mask = mySystem->pageMask();
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// Make sure the system we're being installed in has a page size that'll work
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assert(((0x1080 & mask) == 0) && ((0x1100 & mask) == 0));
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// Set the page accessing methods for the hot spots
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System::PageAccess access;
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for(uInt32 i = (0x1FF6 & ~mask); i < 0x2000; i += (1 << shift))
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{
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access.directPeekBase = 0;
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access.directPokeBase = 0;
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access.device = this;
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mySystem->setPageAccess(i >> shift, access);
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}
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// Set the page accessing method for the DPC reading & writing pages
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for(uInt32 j = 0x1000; j < 0x1080; j += (1 << shift))
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{
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access.directPeekBase = 0;
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access.directPokeBase = 0;
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access.device = this;
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mySystem->setPageAccess(j >> shift, access);
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}
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// Install pages for bank 5
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bank(5);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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inline void CartridgeDPCPlus::clockRandomNumberGenerator()
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{
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// Table for computing the input bit of the random number generator's
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// shift register (it's the NOT of the EOR of four bits)
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static const uInt8 f[16] = {
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1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
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};
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// Using bits 7, 5, 4, & 3 of the shift register compute the input
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// bit for the shift register
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uInt8 bit = f[((myRandomNumber >> 3) & 0x07) |
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((myRandomNumber & 0x80) ? 0x08 : 0x00)];
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// Update the shift register
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myRandomNumber = (myRandomNumber << 1) | bit;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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inline void CartridgeDPCPlus::updateMusicModeDataFetchers()
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{
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// Calculate the number of cycles since the last update
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Int32 cycles = mySystem->cycles() - mySystemCycles;
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mySystemCycles = mySystem->cycles();
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// Calculate the number of DPC OSC clocks since the last update
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double clocks = ((20000.0 * cycles) / 1193191.66666667) + myFractionalClocks;
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Int32 wholeClocks = (Int32)clocks;
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myFractionalClocks = clocks - (double)wholeClocks;
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if(wholeClocks <= 0)
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{
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return;
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}
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// Let's update counters and flags of the music mode data fetchers
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for(int x = 5; x <= 7; ++x)
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{
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// Update only if the data fetcher is in music mode
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if(myMusicMode[x - 5])
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{
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Int32 top = myTops[x] + 1;
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Int32 newLow = (Int32)(myCounters[x] & 0x00ff);
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if(myTops[x] != 0)
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{
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newLow -= (wholeClocks % top);
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if(newLow < 0)
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{
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newLow += top;
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}
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}
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else
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{
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newLow = 0;
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}
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// Update flag register for this data fetcher
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if(newLow <= myBottoms[x])
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{
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myFlags[x] = 0x00;
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}
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else if(newLow <= myTops[x])
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{
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myFlags[x] = 0xff;
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}
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myCounters[x] = (myCounters[x] & 0x0F00) | (uInt16)newLow;
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}
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}
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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uInt8 CartridgeDPCPlus::peek(uInt16 address)
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{
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address &= 0x0FFF;
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// Clock the random number generator. This should be done for every
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// cartridge access, however, we're only doing it for the DPC and
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// hot-spot accesses to save time.
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clockRandomNumberGenerator();
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if(address < 0x0040)
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{
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uInt8 result = 0;
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// Get the index of the data fetcher that's being accessed
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uInt32 index = address & 0x07;
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uInt32 function = (address >> 3) & 0x07;
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// Update flag register for selected data fetcher
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if((myCounters[index] & 0x00ff) == myTops[index])
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{
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myFlags[index] = 0xff;
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}
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else if((myCounters[index] & 0x00ff) == myBottoms[index])
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{
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myFlags[index] = 0x00;
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}
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switch(function)
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{
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case 0x00:
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{
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// Is this a random number read
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if(index < 4)
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{
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result = myRandomNumber;
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}
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// No, it's a music read
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else
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{
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static const uInt8 musicAmplitudes[8] = {
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0x00, 0x04, 0x05, 0x09, 0x06, 0x0a, 0x0b, 0x0f
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};
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// Update the music data fetchers (counter & flag)
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updateMusicModeDataFetchers();
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uInt8 i = 0;
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if(myMusicMode[0] && myFlags[5])
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{
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i |= 0x01;
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}
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if(myMusicMode[1] && myFlags[6])
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{
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i |= 0x02;
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}
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if(myMusicMode[2] && myFlags[7])
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{
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i |= 0x04;
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}
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result = musicAmplitudes[i];
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}
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break;
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}
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// DFx display data read
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case 0x01:
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{
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result = myDisplayImage[ /* 4095 - */ myCounters[index]];
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break;
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}
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// DFx display data read AND'd w/flag
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case 0x02:
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{
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result = myDisplayImage[ /* 4095 - */ myCounters[index]] & myFlags[index];
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break;
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}
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// DFx flag
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case 0x07:
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{
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result = myFlags[index];
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break;
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}
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default:
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{
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result = 0;
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}
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}
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// Clock the selected data fetcher's counter if needed
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if((index < 5) || ((index >= 5) && (!myMusicMode[index - 5])))
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{
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myCounters[index] = (myCounters[index] /*-*/ + 1) & 0x0fff;
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}
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return result;
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}
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else
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{
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// Switch banks if necessary
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switch(address)
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{
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case 0x0FF6:
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// Set the current bank to the first 4k bank
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bank(0);
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break;
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case 0x0FF7:
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// Set the current bank to the second 4k bank
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bank(1);
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break;
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case 0x0FF8:
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// Set the current bank to the third 4k bank
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bank(2);
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break;
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case 0x0FF9:
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// Set the current bank to the fourth 4k bank
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bank(3);
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break;
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case 0x0FFA:
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// Set the current bank to the fifth 4k bank
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bank(4);
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break;
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case 0x0FFB:
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// Set the current bank to the last 4k bank
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bank(5);
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break;
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default:
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break;
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}
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return myProgramImage[myCurrentBank * 4096 + address];
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}
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void CartridgeDPCPlus::poke(uInt16 address, uInt8 value)
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{
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address &= 0x0FFF;
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// Clock the random number generator. This should be done for every
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||||
// cartridge access, however, we're only doing it for the DPC and
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// hot-spot accesses to save time.
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clockRandomNumberGenerator();
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if((address >= 0x0040) && (address < 0x0080))
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{
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// Get the index of the data fetcher that's being accessed
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uInt32 index = address & 0x07;
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uInt32 function = (address >> 3) & 0x07;
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switch(function)
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{
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// DFx top count
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case 0x00:
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{
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myTops[index] = value;
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myFlags[index] = 0x00;
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break;
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}
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// DFx bottom count
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case 0x01:
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{
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myBottoms[index] = value;
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break;
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}
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// DFx counter low
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case 0x02:
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{
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if((index >= 5) && myMusicMode[index - 5])
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{
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// Data fecther is in music mode so its low counter value
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// should be loaded from the top register not the poked value
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myCounters[index] = (myCounters[index] & 0x0F00) |
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(uInt16)myTops[index];
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}
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else
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{
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// Data fecther is either not a music mode data fecther or it
|
||||
// isn't in music mode so it's low counter value should be loaded
|
||||
// with the poked value
|
||||
myCounters[index] = (myCounters[index] & 0x0F00) | (uInt16)value;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
// DFx counter high
|
||||
case 0x03:
|
||||
{
|
||||
myCounters[index] = (((uInt16)value & 0x0F) << 8) |
|
||||
(myCounters[index] & 0x00ff);
|
||||
|
||||
// Execute special code for music mode data fetchers
|
||||
if(index >= 5)
|
||||
{
|
||||
myMusicMode[index - 5] = (value & 0x10);
|
||||
|
||||
// NOTE: We are not handling the clock source input for
|
||||
// the music mode data fetchers. We're going to assume
|
||||
// they always use the OSC input.
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
// Random Number Generator Reset
|
||||
case 0x06:
|
||||
{
|
||||
myRandomNumber = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
default:
|
||||
{
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// 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 fourth 4k bank
|
||||
bank(3);
|
||||
break;
|
||||
|
||||
case 0x0FFA:
|
||||
// Set the current bank to the fifth 4k bank
|
||||
bank(4);
|
||||
break;
|
||||
|
||||
case 0x0FFB:
|
||||
// Set the current bank to the last 4k bank
|
||||
bank(5);
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
void CartridgeDPCPlus::bank(uInt16 bank)
|
||||
{
|
||||
if(bankLocked()) return;
|
||||
|
||||
// Remember what bank we're in
|
||||
myCurrentBank = bank;
|
||||
uInt16 offset = myCurrentBank * 4096;
|
||||
uInt16 shift = mySystem->pageShift();
|
||||
uInt16 mask = mySystem->pageMask();
|
||||
|
||||
// Setup the page access methods for the current bank
|
||||
System::PageAccess access;
|
||||
access.device = this;
|
||||
access.directPokeBase = 0;
|
||||
|
||||
// Map Program ROM image into the system
|
||||
for(uInt32 address = 0x1080; address < (0x1FF8U & ~mask);
|
||||
address += (1 << shift))
|
||||
{
|
||||
access.directPeekBase = &myProgramImage[offset + (address & 0x0FFF)];
|
||||
mySystem->setPageAccess(address >> shift, access);
|
||||
}
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
int CartridgeDPCPlus::bank()
|
||||
{
|
||||
return myCurrentBank;
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
int CartridgeDPCPlus::bankCount()
|
||||
{
|
||||
// TODO - add support for debugger (support the display ROM somehow)
|
||||
return 6;
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
bool CartridgeDPCPlus::patch(uInt16 address, uInt8 value)
|
||||
{
|
||||
// TODO - check if this actually works
|
||||
myProgramImage[(myCurrentBank << 12) + (address & 0x0FFF)] = value;
|
||||
return true;
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
uInt8* CartridgeDPCPlus::getImage(int& size)
|
||||
{
|
||||
size = 4096 * 6 + 4096 + 255;
|
||||
|
||||
int i;
|
||||
for(i = 0; i < 4096 * 6; i++)
|
||||
myImageCopy[i] = myProgramImage[i];
|
||||
|
||||
for(i = 0; i < 4096; i++)
|
||||
myImageCopy[i + 4096 * 6] = myDisplayImage[i];
|
||||
|
||||
return &myImageCopy[0];
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
bool CartridgeDPCPlus::save(Serializer& out) const
|
||||
{
|
||||
const string& cart = name();
|
||||
|
||||
try
|
||||
{
|
||||
uInt32 i;
|
||||
|
||||
out.putString(cart);
|
||||
|
||||
// Indicates which bank is currently active
|
||||
out.putInt(myCurrentBank);
|
||||
|
||||
// The top registers for the data fetchers
|
||||
out.putInt(8);
|
||||
for(i = 0; i < 8; ++i)
|
||||
out.putByte((char)myTops[i]);
|
||||
|
||||
// The bottom registers for the data fetchers
|
||||
out.putInt(8);
|
||||
for(i = 0; i < 8; ++i)
|
||||
out.putByte((char)myBottoms[i]);
|
||||
|
||||
// The counter registers for the data fetchers
|
||||
out.putInt(8);
|
||||
for(i = 0; i < 8; ++i)
|
||||
out.putInt(myCounters[i]);
|
||||
|
||||
// The flag registers for the data fetchers
|
||||
out.putInt(8);
|
||||
for(i = 0; i < 8; ++i)
|
||||
out.putByte((char)myFlags[i]);
|
||||
|
||||
// The music mode flags for the data fetchers
|
||||
out.putInt(3);
|
||||
for(i = 0; i < 3; ++i)
|
||||
out.putBool(myMusicMode[i]);
|
||||
|
||||
// The random number generator register
|
||||
out.putByte((char)myRandomNumber);
|
||||
|
||||
out.putInt(mySystemCycles);
|
||||
out.putInt((uInt32)(myFractionalClocks * 100000000.0));
|
||||
}
|
||||
catch(const char* msg)
|
||||
{
|
||||
cerr << "ERROR: CartridgeDPCPlus::save" << endl << " " << msg << endl;
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||||
bool CartridgeDPCPlus::load(Serializer& in)
|
||||
{
|
||||
const string& cart = name();
|
||||
|
||||
try
|
||||
{
|
||||
if(in.getString() != cart)
|
||||
return false;
|
||||
|
||||
uInt32 i, limit;
|
||||
|
||||
// Indicates which bank is currently active
|
||||
myCurrentBank = (uInt16) in.getInt();
|
||||
|
||||
// The top registers for the data fetchers
|
||||
limit = (uInt32) in.getInt();
|
||||
for(i = 0; i < limit; ++i)
|
||||
myTops[i] = (uInt8) in.getByte();
|
||||
|
||||
// The bottom registers for the data fetchers
|
||||
limit = (uInt32) in.getInt();
|
||||
for(i = 0; i < limit; ++i)
|
||||
myBottoms[i] = (uInt8) in.getByte();
|
||||
|
||||
// The counter registers for the data fetchers
|
||||
limit = (uInt32) in.getInt();
|
||||
for(i = 0; i < limit; ++i)
|
||||
myCounters[i] = (uInt16) in.getInt();
|
||||
|
||||
// The flag registers for the data fetchers
|
||||
limit = (uInt32) in.getInt();
|
||||
for(i = 0; i < limit; ++i)
|
||||
myFlags[i] = (uInt8) in.getByte();
|
||||
|
||||
// The music mode flags for the data fetchers
|
||||
limit = (uInt32) in.getInt();
|
||||
for(i = 0; i < limit; ++i)
|
||||
myMusicMode[i] = in.getBool();
|
||||
|
||||
// The random number generator register
|
||||
myRandomNumber = (uInt8) in.getByte();
|
||||
|
||||
// Get system cycles and fractional clocks
|
||||
mySystemCycles = in.getInt();
|
||||
myFractionalClocks = (double)in.getInt() / 100000000.0;
|
||||
}
|
||||
catch(const char* msg)
|
||||
{
|
||||
cerr << "ERROR: CartridgeDPCPlus::load" << endl << " " << msg << endl;
|
||||
return false;
|
||||
}
|
||||
|
||||
// Now, go to the current bank
|
||||
bank(myCurrentBank);
|
||||
|
||||
return true;
|
||||
}
|
|
@ -0,0 +1,196 @@
|
|||
//============================================================================
|
||||
//
|
||||
// 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) 1995-2010 by Bradford W. Mott 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.
|
||||
//
|
||||
// $Id$
|
||||
//============================================================================
|
||||
|
||||
#ifndef CARTRIDGE_DPC_PLUS_HXX
|
||||
#define CARTRIDGE_DPC_PLUS_HXX
|
||||
|
||||
class System;
|
||||
|
||||
#include "bspf.hxx"
|
||||
#include "Cart.hxx"
|
||||
|
||||
/**
|
||||
Cartridge class used for DPC+. There are six 4K program banks, a
|
||||
4K display bank, and the DPC chip. For complete details on the DPC chip
|
||||
see David P. Crane's United States Patent Number 4,644,495.
|
||||
|
||||
@author Spiceware, Batari, Stephen Anthony
|
||||
@version $Id$
|
||||
*/
|
||||
class CartridgeDPCPlus : public Cartridge
|
||||
{
|
||||
public:
|
||||
/**
|
||||
Create a new cartridge using the specified image
|
||||
|
||||
@param image Pointer to the ROM image
|
||||
*/
|
||||
CartridgeDPCPlus(const uInt8* image, uInt32 size);
|
||||
|
||||
/**
|
||||
Destructor
|
||||
*/
|
||||
virtual ~CartridgeDPCPlus();
|
||||
|
||||
public:
|
||||
/**
|
||||
Reset device to its power-on state
|
||||
*/
|
||||
virtual void reset();
|
||||
|
||||
/**
|
||||
Notification method invoked by the system right before the
|
||||
system resets its cycle counter to zero. It may be necessary
|
||||
to override this method for devices that remember cycle counts.
|
||||
*/
|
||||
virtual void systemCyclesReset();
|
||||
|
||||
/**
|
||||
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
|
||||
*/
|
||||
virtual void install(System& system);
|
||||
|
||||
/**
|
||||
Install pages for the specified bank in the system.
|
||||
|
||||
@param bank The bank that should be installed in the system
|
||||
*/
|
||||
virtual void bank(uInt16 bank);
|
||||
|
||||
/**
|
||||
Get the current bank.
|
||||
|
||||
@return The current bank, or -1 if bankswitching not supported
|
||||
*/
|
||||
virtual int bank();
|
||||
|
||||
/**
|
||||
Query the number of banks supported by the cartridge.
|
||||
*/
|
||||
virtual int bankCount();
|
||||
|
||||
/**
|
||||
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
|
||||
*/
|
||||
virtual bool patch(uInt16 address, uInt8 value);
|
||||
|
||||
/**
|
||||
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
|
||||
*/
|
||||
virtual uInt8* getImage(int& size);
|
||||
|
||||
/**
|
||||
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
|
||||
*/
|
||||
virtual bool save(Serializer& out) const;
|
||||
|
||||
/**
|
||||
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
|
||||
*/
|
||||
virtual bool load(Serializer& in);
|
||||
|
||||
/**
|
||||
Get a descriptor for the device name (used in error checking).
|
||||
|
||||
@return The name of the object
|
||||
*/
|
||||
virtual string name() const { return "CartridgeDPCPlus"; }
|
||||
|
||||
public:
|
||||
/**
|
||||
Get the byte at the specified address.
|
||||
|
||||
@return The byte at the specified address
|
||||
*/
|
||||
virtual uInt8 peek(uInt16 address);
|
||||
|
||||
/**
|
||||
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
|
||||
*/
|
||||
virtual void poke(uInt16 address, uInt8 value);
|
||||
|
||||
private:
|
||||
/**
|
||||
Clocks the random number generator to move it to its next state
|
||||
*/
|
||||
void clockRandomNumberGenerator();
|
||||
|
||||
/**
|
||||
Updates any data fetchers in music mode based on the number of
|
||||
CPU cycles which have passed since the last update.
|
||||
*/
|
||||
void updateMusicModeDataFetchers();
|
||||
|
||||
private:
|
||||
// Indicates which bank is currently active
|
||||
uInt16 myCurrentBank;
|
||||
|
||||
// The 8K program ROM image of the cartridge
|
||||
uInt8 myProgramImage[4096 * 6];
|
||||
|
||||
// The 2K display ROM image of the cartridge
|
||||
uInt8 myDisplayImage[4096];
|
||||
|
||||
// Copy of the raw image, for use by getImage()
|
||||
uInt8 myImageCopy[4096 * 6 + 4096 + 255];
|
||||
|
||||
// The top registers for the data fetchers
|
||||
uInt8 myTops[8];
|
||||
|
||||
// The bottom registers for the data fetchers
|
||||
uInt8 myBottoms[8];
|
||||
|
||||
// The counter registers for the data fetchers
|
||||
uInt16 myCounters[8];
|
||||
|
||||
// The flag registers for the data fetchers
|
||||
uInt8 myFlags[8];
|
||||
|
||||
// The music mode DF5, DF6, & DF7 enabled flags
|
||||
bool myMusicMode[3];
|
||||
|
||||
// The random number generator register
|
||||
uInt8 myRandomNumber;
|
||||
|
||||
// System cycle count when the last update to music data fetchers occurred
|
||||
Int32 mySystemCycles;
|
||||
|
||||
// Fractional DPC music OSC clocks unused during the last update
|
||||
double myFractionalClocks;
|
||||
};
|
||||
|
||||
#endif
|
|
@ -12,6 +12,7 @@ MODULE_OBJS := \
|
|||
src/emucore/CartCV.o \
|
||||
src/emucore/Cart.o \
|
||||
src/emucore/CartDPC.o \
|
||||
src/emucore/CartDPCPlus.o \
|
||||
src/emucore/CartE0.o \
|
||||
src/emucore/CartE7.o \
|
||||
src/emucore/CartEF.o \
|
||||
|
|
|
@ -147,6 +147,7 @@ GameInfoDialog::GameInfoDialog(
|
|||
items.push_back("AR (Supercharger)", "AR" );
|
||||
items.push_back("CV (Commavid extra ram)", "CV" );
|
||||
items.push_back("DPC (Pitfall II)", "DPC" );
|
||||
items.push_back("DPC+ (Enhanced DPC)", "DPC+" );
|
||||
items.push_back("E0 (8K Parker Bros)", "E0" );
|
||||
items.push_back("E7 (16K M-network)", "E7" );
|
||||
items.push_back("EF (64K H. Runner)", "EF" );
|
||||
|
|
|
@ -78,6 +78,7 @@ GlobalPropsDialog::
|
|||
items.push_back("AR (Supercharger)", "AR" );
|
||||
items.push_back("CV (Commavid extra ram)", "CV" );
|
||||
items.push_back("DPC (Pitfall II)", "DPC" );
|
||||
items.push_back("DPC+ (Enhanced DPC)", "DPC+" );
|
||||
items.push_back("E0 (8K Parker Bros)", "E0" );
|
||||
items.push_back("E7 (16K M-network)", "E7" );
|
||||
items.push_back("EF (64K H. Runner)", "EF" );
|
||||
|
|
Loading…
Reference in New Issue