mirror of https://github.com/stella-emu/stella.git
Initial support for ROM patching: a "rom" command in the prompt that acts
like the "ram" command. Each Cart type needs its own patch() method to allow changing ROM. So far, only Cart4K has a working patch() method: all other cart types inherit Cartridge::patch(), which does nothing and returns false. TODO: saverom command? git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@570 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
urchlay
parent
dfdc9de1a9
commit
ec0accd4a2
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@ -13,7 +13,7 @@
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// See the file "license" 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: Debugger.cxx,v 1.36 2005-06-27 04:45:35 urchlay Exp $
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// $Id: Debugger.cxx,v 1.37 2005-06-27 15:07:40 urchlay Exp $
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//============================================================================
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#include "bspf.hxx"
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@ -711,3 +711,8 @@ int Debugger::bankCount() {
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const char *Debugger::getCartType() {
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return myConsole->cartridge().name();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Debugger::patchROM(int addr, int value) {
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return myConsole->cartridge().patch(addr, value);
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}
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@ -13,7 +13,7 @@
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// See the file "license" 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: Debugger.hxx,v 1.33 2005-06-27 04:45:52 urchlay Exp $
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// $Id: Debugger.hxx,v 1.34 2005-06-27 15:07:42 urchlay Exp $
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//============================================================================
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#ifndef DEBUGGER_HXX
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@ -51,7 +51,7 @@ enum {
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for all debugging operations in Stella (parser, 6502 debugger, etc).
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@author Stephen Anthony
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@version $Id: Debugger.hxx,v 1.33 2005-06-27 04:45:52 urchlay Exp $
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@version $Id: Debugger.hxx,v 1.34 2005-06-27 15:07:42 urchlay Exp $
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*/
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class Debugger : public DialogContainer
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{
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@ -234,6 +234,7 @@ class Debugger : public DialogContainer
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int bankCount();
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int getBank();
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const char *getCartType();
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bool patchROM(int addr, int value);
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protected:
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Console* myConsole;
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@ -13,7 +13,7 @@
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// See the file "license" 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: DebuggerParser.cxx,v 1.38 2005-06-27 04:45:52 urchlay Exp $
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// $Id: DebuggerParser.cxx,v 1.39 2005-06-27 15:07:43 urchlay Exp $
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//============================================================================
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#include "bspf.hxx"
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@ -227,6 +227,14 @@ Command DebuggerParser::commands[] = {
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&DebuggerParser::executeReset
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},
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{
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"rom",
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"Change ROM contents",
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true,
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{ kARG_WORD, kARG_MULTI_BYTE },
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&DebuggerParser::executeRom
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},
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{
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"run",
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"Exit debugger, return to emulator",
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@ -1103,6 +1111,21 @@ void DebuggerParser::executeReset() {
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commandResult = "reset CPU";
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}
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// "rom"
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void DebuggerParser::executeRom() {
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int addr = args[0];
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for(int i=1; i<argCount; i++) {
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if( !(debugger->patchROM(addr++, args[i])) ) {
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commandResult = "patching ROM unsupported for this cart type";
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return;
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}
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}
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commandResult = "changed ";
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commandResult += debugger->valueToString( args.size() - 1 );
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commandResult += " location(s)";
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}
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// "run"
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void DebuggerParser::executeRun() {
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debugger->quit();
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@ -13,7 +13,7 @@
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// See the file "license" 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: DebuggerParser.hxx,v 1.20 2005-06-27 04:45:52 urchlay Exp $
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// $Id: DebuggerParser.hxx,v 1.21 2005-06-27 15:07:45 urchlay Exp $
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//============================================================================
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#ifndef DEBUGGER_PARSER_HXX
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@ -111,6 +111,7 @@ class DebuggerParser
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void executeRam();
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void executeReload();
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void executeReset();
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void executeRom();
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void executeRun();
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void executeS();
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void executeSaveses();
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@ -13,7 +13,7 @@
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// See the file "license" 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: Cart.cxx,v 1.10 2005-06-27 04:45:52 urchlay Exp $
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// $Id: Cart.cxx,v 1.11 2005-06-27 15:07:46 urchlay Exp $
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//============================================================================
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#include <assert.h>
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@ -286,7 +286,7 @@ int Cartridge::bankCount() {
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Cartridge::patch(int address, int value) {
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bool Cartridge::patch(uInt16 address, uInt8 value) {
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return false;
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}
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@ -13,7 +13,7 @@
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// See the file "license" 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: Cart.hxx,v 1.4 2005-06-27 04:45:52 urchlay Exp $
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// $Id: Cart.hxx,v 1.5 2005-06-27 15:07:54 urchlay Exp $
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//============================================================================
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#ifndef CARTRIDGE_HXX
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@ -31,7 +31,7 @@ class System;
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game and handles any bankswitching performed by the cartridge.
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@author Bradford W. Mott
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@version $Id: Cart.hxx,v 1.4 2005-06-27 04:45:52 urchlay Exp $
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@version $Id: Cart.hxx,v 1.5 2005-06-27 15:07:54 urchlay Exp $
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*/
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class Cartridge : public Device
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{
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@ -62,7 +62,7 @@ class Cartridge : public Device
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virtual int bank(); // get current bank (-1 if no bankswitching supported)
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virtual void bank(uInt16 b); // set bank
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virtual int bankCount(); // count # of banks
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virtual bool patch(int address, int value);
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virtual bool patch(uInt16 address, uInt8 value);
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private:
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/**
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@ -13,7 +13,7 @@
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// See the file "license" 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: Cart4K.cxx,v 1.5 2005-06-16 00:55:57 stephena Exp $
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// $Id: Cart4K.cxx,v 1.6 2005-06-27 15:07:54 urchlay Exp $
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//============================================================================
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#include <assert.h>
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@ -83,6 +83,13 @@ void Cartridge4K::poke(uInt16, uInt8)
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// This is ROM so poking has no effect :-)
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Cartridge4K::patch(uInt16 address, uInt8 value)
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{
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myImage[address & 0x0FFF] = value;
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return true;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Cartridge4K::save(Serializer& out)
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{
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// See the file "license" 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: Cart4K.hxx,v 1.4 2005-06-16 00:55:57 stephena Exp $
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// $Id: Cart4K.hxx,v 1.5 2005-06-27 15:07:54 urchlay Exp $
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//============================================================================
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#ifndef CARTRIDGE4K_HXX
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@ -32,7 +32,7 @@ class Deserializer;
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not bankswitched.
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@author Bradford W. Mott
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@version $Id: Cart4K.hxx,v 1.4 2005-06-16 00:55:57 stephena Exp $
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@version $Id: Cart4K.hxx,v 1.5 2005-06-27 15:07:54 urchlay Exp $
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*/
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class Cartridge4K : public Cartridge
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{
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@ -102,6 +102,8 @@ class Cartridge4K : public Cartridge
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*/
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virtual void poke(uInt16 address, uInt8 value);
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bool patch(uInt16 address, uInt8 value);
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private:
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// The 4K ROM image for the cartridge
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uInt8 myImage[4096];
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