COLECOVISIONエミュレータをつくる その３

まずはSource Code Archive (12/18/2018)をダウンロードします。

http://takeda-toshiya.my.coocan.jp/common/index.html

好きなディレクトリに展開して、以下のプロジェクトを開きます。

source\vc++2008\coleco.vcprj
source\src\res\coleco.rc
              \coleco.ico
source\src\vm\coleco\coleco.cpp
                     coleco.h
                     keyboard.cpp
                     keyboard.h
                     memory.cpp
                     memory.h

SGM対応のために以下の変更をします。

http://www.geocities.jp/parallel_computer_inc/colecovision.zip

coleco.cpp

/*
	COLECO ColecoVision Emulator 'yaCOLECOVISION'

	Author : tanam
	Date   : 2016.08.14-

	[ virtual machine ]
*/

#include "colecovision.h"
#include "../../emu.h"
#include "../device.h"
#include "../event.h"

#include "../io.h"
#include "../sn76489an.h"
#include "../ay_3_891x.h"
#include "../tms9918a.h"
#include "../z80.h"

#ifdef USE_DEBUGGER
#include "../debugger.h"
#endif

#include "keyboard.h"
#include "memory.h"

// ----------------------------------------------------------------------------
// initialize
// ----------------------------------------------------------------------------

VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
{
	// create devices
	first_device = last_device = NULL;
	dummy = new DEVICE(this, emu);	// must be 1st device
	event = new EVENT(this, emu);	// must be 2nd device
	
	io = new IO(this, emu);
	dcsg = new SN76489AN(this, emu);
	psg = new AY_3_891X(this, emu);
	vdp = new TMS9918A(this, emu);
	cpu = new Z80(this, emu);
	
	key = new KEYBOARD(this, emu);
	memory = new MEMORY(this, emu);
	
	// set contexts
	event->set_context_cpu(cpu);
	event->set_context_sound(dcsg);
	event->set_context_sound(psg);

	vdp->set_context_irq(cpu, SIG_CPU_NMI, 1);
	key->set_context_cpu(cpu);
	
	// cpu bus
	cpu->set_context_mem(memory);
	cpu->set_context_io(io);
	cpu->set_context_intr(dummy);
#ifdef USE_DEBUGGER
	cpu->set_context_debugger(new DEBUGGER(this, emu));
#endif
	
	// i/o bus
	io->set_iomap_alias_w(0x50, psg, 0);		// PSG ch
	io->set_iomap_alias_w(0x51, psg, 1);		// PSG data
	io->set_iomap_alias_r(0x52, psg, 1);		// PSG data
	io->set_iomap_range_w(0x7f,0x7f, memory);	// LOWER 8K RAM(0000-1FFF)
	io->set_iomap_range_w(0x80, 0x9f, key);
	io->set_iomap_range_rw(0xbe, 0xbf, vdp);
	io->set_iomap_range_w(0xc0, 0xdf, key);
	io->set_iomap_range_r(0xfc, 0xff, key);
	io->set_iomap_range_w(0xff, 0xff, dcsg);
	
	// initialize all devices
	for(DEVICE* device = first_device; device; device = device->next_device) {
		device->initialize();
	}
}

VM::~VM()
{
	// delete all devices
	for(DEVICE* device = first_device; device;) {
		DEVICE *next_device = device->next_device;
		device->release();
		delete device;
		device = next_device;
	}
}

DEVICE* VM::get_device(int id)
{
	for(DEVICE* device = first_device; device; device = device->next_device) {
		if(device->this_device_id == id) {
			return device;
		}
	}
	return NULL;
}

// ----------------------------------------------------------------------------
// debugger
// ----------------------------------------------------------------------------

#ifdef USE_DEBUGGER
DEVICE *VM::get_cpu(int index)
{
	if(index == 0) {
		return cpu;
	}
	return NULL;
}
#endif

// ----------------------------------------------------------------------------
// drive virtual machine
// ----------------------------------------------------------------------------

void VM::reset()
{
	// reset all devices
	for(DEVICE* device = first_device; device; device = device->next_device) {
		device->reset();
	}
}

void VM::run()
{
	event->drive();
}

// ----------------------------------------------------------------------------
// draw screen
// ----------------------------------------------------------------------------

void VM::draw_screen()
{
	vdp->draw_screen();
}

// ----------------------------------------------------------------------------
// soud manager
// ----------------------------------------------------------------------------

void VM::initialize_sound(int rate, int samples)
{
	// init sound manager
	event->initialize_sound(rate, samples);
	
	// init sound gen
	dcsg->initialize_sound(rate, 3579545, 8000);
	psg->initialize_sound(rate, 3579545, samples, 0, 0);
}

uint16_t* VM::create_sound(int* extra_frames)
{
	return event->create_sound(extra_frames);
}

int VM::get_sound_buffer_ptr()
{
	return event->get_sound_buffer_ptr();
}

#ifdef USE_SOUND_VOLUME
void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
{
	if(ch == 0) {
		dcsg->set_volume(0, decibel_l, decibel_r);
		psg->set_volume(1, decibel_l, decibel_r);
	}
}
#endif

// ----------------------------------------------------------------------------
// user interface
// ----------------------------------------------------------------------------

void VM::open_cart(int drv, const _TCHAR* file_path)
{
	if(drv == 0) {
		memory->open_cart(file_path);
		reset();
	}
}

void VM::close_cart(int drv)
{
	if(drv == 0) {
		memory->close_cart();
		reset();
	}
}

bool VM::is_cart_inserted(int drv)
{
	if(drv == 0) {
		return memory->is_cart_inserted();
	} else {
		return false;
	}
}

bool VM::is_frame_skippable()
{
	return event->is_frame_skippable();
}

void VM::update_config()
{
	for(DEVICE* device = first_device; device; device = device->next_device) {
		device->update_config();
	}
}

#define STATE_VERSION	2

bool VM::process_state(FILEIO* state_fio, bool loading)
{
	if(!state_fio->StateCheckUint32(STATE_VERSION)) {
		return false;
	}
	for(DEVICE* device = first_device; device; device = device->next_device) {
		const char *name = typeid(*device).name() + 6; // skip "class "
		int len = strlen(name);
		
		if(!state_fio->StateCheckInt32(len)) {
			return false;
		}
		if(!state_fio->StateCheckBuffer(name, len, 1)) {
			return false;
		}
		if(!device->process_state(state_fio, loading)) {
			return false;
		}
	}
	return true;
}

coleco.h

/*
	COLECO ColecoVision Emulator 'yaCOLECOVISION'

	Author : tanam
	Date   : 2016.08.14-

	[ virtual machine ]
*/

#ifndef _COLECO_VISION_H_
#define _COLECO_VISION_H_

#define DEVICE_NAME		"COLECO ColecoVision"
#define CONFIG_NAME		"colecovision"

// device informations for virtual machine
#define FRAMES_PER_SEC		60
#define LINES_PER_FRAME		262
#define CPU_CLOCKS		3579545
#define SCREEN_WIDTH		256
#define SCREEN_HEIGHT		192
#define TMS9918A_VRAM_SIZE	0x4000
#define TMS9918A_LIMIT_SPRITES

// device informations for win32
#define USE_CART		1
#define USE_SOUND_VOLUME	2
#define USE_JOYSTICK
#define USE_DEBUGGER
#define USE_STATE

#include "../../common.h"
#include "../../fileio.h"
#include "../vm_template.h"

#ifdef USE_SOUND_VOLUME
static const _TCHAR *sound_device_caption[] = {
	_T("DCSG"),_T("PSG"),
};
#endif

class EMU;
class DEVICE;
class EVENT;

class IO;
class SN76489AN;
class AY_3_891X;
class TMS9918A;
class Z80;

class KEYBOARD;
class MEMORY;

class VM : public VM_TEMPLATE
{
protected:
	// devices
	EVENT* event;
	
	IO* io;
	SN76489AN* dcsg;
	AY_3_891X* psg;
	TMS9918A* vdp;
	Z80* cpu;
	
	KEYBOARD* key;
	MEMORY* memory;
	
public:
	// ----------------------------------------
	// initialize
	// ----------------------------------------
	
	VM(EMU* parent_emu);
	~VM();
	
	// ----------------------------------------
	// for emulation class
	// ----------------------------------------
	
	// drive virtual machine
	void reset();
	void run();
	double get_frame_rate()
	{
		return FRAMES_PER_SEC;
	}
	
#ifdef USE_DEBUGGER
	// debugger
	DEVICE *get_cpu(int index);
#endif
	
	// draw screen
	void draw_screen();
	
	// sound generation
	void initialize_sound(int rate, int samples);
	uint16_t* create_sound(int* extra_frames);
	int get_sound_buffer_ptr();
#ifdef USE_SOUND_VOLUME
	void set_sound_device_volume(int ch, int decibel_l, int decibel_r);
#endif
	
	// user interface
	void open_cart(int drv, const _TCHAR* file_path);
	void close_cart(int drv);
	bool is_cart_inserted(int drv);
	bool is_frame_skippable();
	
	void update_config();
	bool process_state(FILEIO* state_fio, bool loading);
	
	// ----------------------------------------
	// for each device
	// ----------------------------------------
	
	// devices
	DEVICE* get_device(int id);
};

#endif

memory.cpp

/*
	COLECO ColecoVision Emulator 'yaCOLECOVISION'

	Author : tanam
	Date   : 2016.08.14-

	[ memory ]
*/

#include "memory.h"

#define SET_BANK(s, e, w, r) { \
	int sb = (s) >> 12, eb = (e) >> 12; \
	for(int i = sb; i <= eb; i++) { \
		if((w) == wdmy) { \
			wbank[i] = wdmy; \
		} else { \
			wbank[i] = (w) + 0x1000 * (i - sb); \
		} \
		if((r) == rdmy) { \
			rbank[i] = rdmy; \
		} else { \
			rbank[i] = (r) + 0x1000 * (i - sb); \
		} \
	} \
}

void MEMORY::initialize()
{
	memset(cart, 0xff, sizeof(cart));
	memset(ipl, 0xff, sizeof(ipl));
	memset(ram, 0, sizeof(ram));
	memset(rdmy, 0xff, sizeof(rdmy));
	
	// load ipl
	FILEIO* fio = new FILEIO();
	if(fio->Fopen(create_local_path(_T("COLECO.ROM")), FILEIO_READ_BINARY)) {
		fio->Fread(ipl, sizeof(ipl), 1);
		fio->Fclose();
	}
	delete fio;
	
	// set memory map
	SET_BANK(0x0000, 0x1fff, wdmy, ipl);
	SET_BANK(0x2000, 0x7fff, ram+0x2000,  ram+0x2000);
	SET_BANK(0x8000, 0xffff, wdmy, cart);
	
	megarom=0;
	inserted = false;
}

void MEMORY::write_data8(uint32_t addr, uint32_t data)
{
	wbank[addr >> 12][addr & 0xfff] = data;
}

uint32_t MEMORY::read_data8(uint32_t addr)
{
	uint32_t page=0;
	addr &= 0xffff;
	if (megarom && addr>=(0xffff-megarom)) {
		page = (0xffff-addr);
		SET_BANK(0xc000, 0xffff, wdmy, cart+(megarom-page)* 0x4000);
	}
	return rbank[addr >> 12][addr & 0xfff];
}

void MEMORY::write_io8(uint32_t addr, uint32_t data)
{
	if (data==0x0d) {
		SET_BANK(0x0000, 0x1fff, ram, ram);
	} else {
		SET_BANK(0x0000, 0x1fff, wdmy, ipl);
	}
	return;
}

void MEMORY::open_cart(const _TCHAR* file_path)
{
	FILEIO* fio = new FILEIO();
	uint32_t size;
	if(fio->Fopen(file_path, FILEIO_READ_BINARY)) {
		memset(cart, 0xff, sizeof(cart));
		fio->Fseek(0, FILEIO_SEEK_END);
		size = fio->Ftell();
		fio->Fseek(0, FILEIO_SEEK_SET);
		fio->Fread(cart, sizeof(cart), 1);
		fio->Fclose();
		inserted = true;
		
		// set memory map
		if (size>0x8000) {
			megarom=(size/0x4000)-1;
			SET_BANK(0x8000, 0xbfff, wdmy, cart + megarom * 0x4000);
			SET_BANK(0xc000, 0xffff, wdmy, cart + megarom * 0x4000);
		} else {
			megarom=0;
			SET_BANK(0x8000, 0xffff, wdmy, cart);
		}
	}
	delete fio;
}

void MEMORY::close_cart()
{
	memset(cart, 0xff, sizeof(cart));
	megarom=0;
	inserted = false;
	
	// set memory map
	SET_BANK(0x0000, 0x1fff, wdmy, ipl);
	SET_BANK(0x2000, 0x7fff, ram+0x2000,  ram+0x2000);
	SET_BANK(0x8000, 0xffff, wdmy, cart);
}

#define STATE_VERSION	1

bool MEMORY::process_state(FILEIO* state_fio, bool loading)
{
	if(!state_fio->StateCheckUint32(STATE_VERSION)) {
		return false;
	}
	if(!state_fio->StateCheckInt32(this_device_id)) {
		return false;
	}
	state_fio->StateArray(ram, sizeof(ram), 1);
	state_fio->StateValue(inserted);
	
	// post process
	if(loading) {
		if(inserted) {
			SET_BANK(0x8000, 0xffff, wdmy, cart);
		} else {
			SET_BANK(0x0000, 0x1fff, wdmy, ipl);
			SET_BANK(0x2000, 0x7fff, ram+0x2000,  ram+0x2000);
		SET_BANK(0x8000, 0xffff, wdmy, cart);
		}
	}
	return true;
}

memory.h

/*
	COLECO ColecoVision Emulator 'yaCOLECOVISION'

	Author : tanam
	Date   : 2016.08.14-

	[ memory ]
*/

#ifndef _MEMORY_H_
#define _MEMORY_H_

#include "../vm.h"
#include "../../emu.h"
#include "../device.h"

class MEMORY : public DEVICE
{
private:
	// memory
	uint32_t megarom;
	uint8_t cart[0x80000];
	uint8_t ipl[0x2000];
	uint8_t ram[0x10000];
	
	uint8_t wdmy[0x10000];
	uint8_t rdmy[0x10000];
	uint8_t* wbank[16];
	uint8_t* rbank[16];
	
	bool inserted;
	
public:
	MEMORY(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
	{
		set_device_name(_T("Memory Bus"));
	}
	~MEMORY() {}
	
	// common functions
	void initialize();
	void write_data8(uint32_t addr, uint32_t data);
	uint32_t read_data8(uint32_t addr);
	void write_io8(uint32_t addr, uint32_t data);
	bool process_state(FILEIO* state_fio, bool loading);
	
	// unique functions
	void open_cart(const _TCHAR* file_path);
	void close_cart();
	bool is_cart_inserted()
	{
		return inserted;
	}
};

#endif

coleco.vcprj

<?xml version="1.0" encoding="shift_jis"?>
<VisualStudioProject
	ProjectType="Visual C++"
	Version="9.00"
	Name="colecovision"
	ProjectGUID="{26207C6A-4A3C-4BE2-A3D6-C8A2FF886A96}"
	RootNamespace="colecovision"
	TargetFrameworkVersion="131072"
	>
	<Platforms>
		<Platform
			Name="Win32"
		/>
	</Platforms>
	<ToolFiles>
	</ToolFiles>
	<Configurations>
		<Configuration
			Name="Debug|Win32"
			OutputDirectory=".\Debug"
			IntermediateDirectory=".\Debug"
			ConfigurationType="1"
			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
			<Tool
				Name="VCCustomBuildTool"
			/>
			<Tool
				Name="VCXMLDataGeneratorTool"
			/>
			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				PreprocessorDefinitions="_DEBUG"
				MkTypLibCompatible="true"
				SuppressStartupBanner="true"
				TargetEnvironment="1"
				TypeLibraryName=".\Debug/colecovision.tlb"
				HeaderFileName=""
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="0"
				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_COLECOVISION"
				MinimalRebuild="true"
				BasicRuntimeChecks="3"
				RuntimeLibrary="1"
				PrecompiledHeaderFile=".\Debug/colecovision.pch"
				AssemblerListingLocation=".\Debug/"
				ObjectFile=".\Debug/"
				ProgramDataBaseFileName=".\Debug/"
				BrowseInformation="1"
				WarningLevel="3"
				SuppressStartupBanner="true"
				DebugInformationFormat="4"
			/>
			<Tool
				Name="VCManagedResourceCompilerTool"
			/>
			<Tool
				Name="VCResourceCompilerTool"
				PreprocessorDefinitions="_DEBUG"
				Culture="1041"
			/>
			<Tool
				Name="VCPreLinkEventTool"
			/>
			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="odbc32.lib odbccp32.lib winmm.lib imm32.lib"
				OutputFile=".\Debug/colecovision.exe"
				LinkIncremental="2"
				SuppressStartupBanner="true"
				GenerateManifest="false"
				GenerateDebugInformation="true"
				ProgramDatabaseFile=".\Debug/colecovision.pdb"
				SubSystem="2"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
				SuppressStartupBanner="true"
				OutputFile=".\Debug/colecovision.bsc"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
		<Configuration
			Name="Release|Win32"
			OutputDirectory=".\Release"
			IntermediateDirectory=".\Release"
			ConfigurationType="1"
			InheritedPropertySheets="$(VCInstallDir)VCProjectDefaults\UpgradeFromVC60.vsprops"
			UseOfMFC="0"
			ATLMinimizesCRunTimeLibraryUsage="false"
			CharacterSet="2"
			>
			<Tool
				Name="VCPreBuildEventTool"
			/>
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				Name="VCCustomBuildTool"
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			<Tool
				Name="VCXMLDataGeneratorTool"
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			<Tool
				Name="VCWebServiceProxyGeneratorTool"
			/>
			<Tool
				Name="VCMIDLTool"
				PreprocessorDefinitions="NDEBUG"
				MkTypLibCompatible="true"
				SuppressStartupBanner="true"
				TargetEnvironment="1"
				TypeLibraryName=".\Release/colecovision.tlb"
				HeaderFileName=""
			/>
			<Tool
				Name="VCCLCompilerTool"
				Optimization="2"
				InlineFunctionExpansion="2"
				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_COLECOVISION"
				StringPooling="true"
				RuntimeLibrary="0"
				EnableFunctionLevelLinking="true"
				EnableEnhancedInstructionSet="2"
				PrecompiledHeaderFile=".\Release/colecovision.pch"
				AssemblerListingLocation=".\Release/"
				ObjectFile=".\Release/"
				ProgramDataBaseFileName=".\Release/"
				BrowseInformation="1"
				WarningLevel="3"
				SuppressStartupBanner="true"
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				PreprocessorDefinitions="NDEBUG"
				Culture="1033"
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			<Tool
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			<Tool
				Name="VCLinkerTool"
				AdditionalDependencies="odbc32.lib odbccp32.lib winmm.lib imm32.lib"
				OutputFile=".\Release/colecovision.exe"
				LinkIncremental="1"
				SuppressStartupBanner="true"
				GenerateManifest="false"
				ProgramDatabaseFile=".\Release/colecovision.pdb"
				SubSystem="2"
				RandomizedBaseAddress="1"
				DataExecutionPrevention="0"
				TargetMachine="1"
			/>
			<Tool
				Name="VCALinkTool"
			/>
			<Tool
				Name="VCManifestTool"
			/>
			<Tool
				Name="VCXDCMakeTool"
			/>
			<Tool
				Name="VCBscMakeTool"
				SuppressStartupBanner="true"
				OutputFile=".\Release/colecovision.bsc"
			/>
			<Tool
				Name="VCFxCopTool"
			/>
			<Tool
				Name="VCAppVerifierTool"
			/>
			<Tool
				Name="VCPostBuildEventTool"
			/>
		</Configuration>
	</Configurations>
	<References>
	</References>
	<Files>
		<Filter
			Name="Source Files"
			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
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