SVI-3x8エミュレータをつくる その２

ソースコード差分は以下になります。 

http://www.geocities.jp/parallel_computer_inc/svi3x8.zip

vm.h

// SPECTRAVIDEO SVI-3x8
#ifdef _SVI3X8
#include "svi3x8/msx_ex.h"
#endif

msx_ex.h

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/msx.h

	modified by tanam
	Date   : 2018.12.09-

	[ virtual machine ]
*/

#ifndef _MSX_EX_H_
#define _MSX_EX_H_

#if defined(_SVI3X8)
#define DEVICE_NAME		"SPECTRAVIDEO SVI-3x8"
#define CONFIG_NAME		"svi3x8"
#endif

#if defined(_SVI3X8)
#define _MSX1_VARIANTS
#define MAINROM_SLOT	0x00
#define CART1_SLOT	0x01
//#define FDD_PATCH_SLOT	0x8B

#endif

// device informations for virtual machine
#define FRAMES_PER_SEC		60
#define LINES_PER_FRAME		262
#define CPU_CLOCKS		3579545
#if defined(_MSX1_VARIANTS)
#define SCREEN_WIDTH		512
#define SCREEN_HEIGHT		384
#define WINDOW_WIDTH_ASPECT	576
#endif
#define TMS9918A_VRAM_SIZE	0x4000
#define TMS9918A_LIMIT_SPRITES
//#if defined(FDD_PATCH_SLOT)
#define MAX_DRIVE		1
//#define SUPPORT_MEDIA_TYPE_1DD
//#define Z80_PSEUDO_BIOS
//#endif
#define HAS_AY_3_8910
// for Flappy Limited '85
#define AY_3_891X_PORT_MODE	0x80

// device informations for win32
#define USE_CART		2
#define USE_TAPE		1
//#if defined(FDD_PATCH_SLOT)
#define USE_FLOPPY_DISK		1
//#endif
#define USE_AUTO_KEY		6
#define USE_AUTO_KEY_RELEASE	10
#define USE_SOUND_VOLUME	7
#define USE_JOYSTICK
#define USE_DEBUGGER
#define USE_STATE
//#define USE_PRINTER
//#define USE_PRINTER_TYPE	4

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

#ifdef USE_SOUND_VOLUME
static const _TCHAR *sound_device_caption[] = {
	_T("PSG"), _T("Beep"), _T("CMT (Signal)"),
	_T("Cart#1"), _T("Cart#2"), _T("MSX-MUSIC"), _T("Noise (CMT)"),
};
#endif

class EMU;
class DEVICE;
class EVENT;

class DATAREC;
class I8255;
class IO;
class NOT;
class AY_3_891X;
class PCM1BIT;
class TMS9918A;
class Z80;

class JOYSTICK;
class KEYBOARD;
class MEMORY_EX;
class SLOT_MAINROM;
class SLOT_CART;
#if defined(USE_PRINTER)
class PRINTER;
#endif
//#if defined(FDD_PATCH_SLOT)
//class SLOT_FDD_PATCH;
//#endif

class VM : public VM_TEMPLATE
{
protected:
//	EMU* emu;
	
	// devices
	EVENT* event;
	
	DATAREC* drec;
	I8255* pio;
	IO* io;
	NOT* not_remote;
	AY_3_891X* psg;
	PCM1BIT* pcm;
	TMS9918A* vdp;
	Z80* cpu;
	
	JOYSTICK* joystick;
	KEYBOARD* keyboard;
	MEMORY_EX* memory;
	SLOT_MAINROM *slot_mainrom;
	SLOT_CART *slot_cart[1];
//#ifdef USE_PRINTER
//	PRINTER* printer;
//#endif
	
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);
	void play_tape(int drv, const _TCHAR* file_path);
	void rec_tape(int drv, const _TCHAR* file_path);
	void close_tape(int drv);
	bool is_tape_inserted(int drv);
	bool is_tape_playing(int drv);
	bool is_tape_recording(int drv);
	int get_tape_position(int drv);
	const _TCHAR* get_tape_message(int drv);
	void push_play(int drv);
	void push_stop(int drv);
	void push_fast_forward(int drv);
	void push_fast_rewind(int drv);
	void push_apss_forward(int drv) {}
	void push_apss_rewind(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);
//	DEVICE* dummy;
//	DEVICE* first_device;
//	DEVICE* last_device;
};

#endif

msx_ex.cpp

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/msx_ex.cpp

	modified by tanam
	Date   : 2018.12.09-

	[ virtual machine ]
*/

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

#include "../datarec.h"
#include "../i8255.h"
#include "../io.h"
#include "../noise.h"
#include "../not.h"
#include "../ay_3_891x.h"
#include "../pcm1bit.h"
#include "../tms9918a.h"
#include "../z80.h"

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

#include "joystick.h"
#include "keyboard.h"
#include "memory_ex.h"
#ifdef USE_PRINTER
#include "printer.h"
#include "../prnfile.h"
#endif

// ----------------------------------------------------------------------------
// 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
	
	drec = new DATAREC(this, emu);
	drec->set_context_noise_play(new NOISE(this, emu));
	drec->set_context_noise_stop(new NOISE(this, emu));
	drec->set_context_noise_fast(new NOISE(this, emu));
	pio = new I8255(this, emu);
	io = new IO(this, emu);
	not_remote = new NOT(this, emu);
	psg = new AY_3_891X(this, emu);
	pcm = new PCM1BIT(this, emu);
	vdp = new TMS9918A(this, emu);
	cpu = new Z80(this, emu);
	
	joystick = new JOYSTICK(this, emu);
	keyboard = new KEYBOARD(this, emu);
	memory = new MEMORY_EX(this, emu);
	slot_mainrom = new SLOT_MAINROM(this, emu);
	slot_cart[0] = new SLOT_CART(this, emu);
#ifdef USE_PRINTER
	printer = new PRINTER(this, emu);
#endif
	
	// set contexts
	event->set_context_cpu(cpu);
	event->set_context_sound(psg);
	event->set_context_sound(pcm);
	event->set_context_sound(drec);
	event->set_context_sound(drec->get_context_noise_play());
	event->set_context_sound(drec->get_context_noise_stop());
	event->set_context_sound(drec->get_context_noise_fast());	
	drec->set_context_ear(psg, SIG_AY_3_891X_PORT_A, 0x80);
	pio->set_context_port_c(keyboard, SIG_KEYBOARD_COLUMN, 0x0f, 0);
	pio->set_context_port_c(not_remote, SIG_NOT_INPUT, 0x10, 0);
	not_remote->set_context_out(drec, SIG_DATAREC_REMOTE, 1);
	pio->set_context_port_c(drec, SIG_DATAREC_MIC, 0x20, 0);
	pio->set_context_port_c(pcm, SIG_PCM1BIT_SIGNAL, 0x80, 0);
//	psg->set_context_port_a(joystick, SIG_JOYSTICK_SEL, 0x04, 0);
	vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
	
	joystick->set_context_psg(psg);
	joystick->set_context_memory(memory);
	keyboard->set_context_pio(pio);
	memory->set_context_slot(MAINROM_SLOT, slot_mainrom);
	
#ifdef USE_PRINTER
	if(config.printer_type == 0) {  
		printer->set_context_prn(new PRNFILE(this, emu));
	} else {
		printer->set_context_prn(printer);
	}
#endif

	// 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_range_w(0x80, 0x81, vdp);
	io->set_iomap_range_r(0x84, 0x85, vdp);
	io->set_iomap_range_w(0x94, 0x97, pio);
	io->set_iomap_range_r(0x99, 0x9a, pio);
	io->set_iomap_alias_w(0x88, psg, 0);	// PSG ch
	io->set_iomap_alias_w(0x8c, psg, 1);	// PSG data
	io->set_iomap_alias_r(0x90, psg, 1);	// STICK
	io->set_iomap_alias_rw(0x98, memory, 0);	// STRIG
#ifdef USE_PRINTER
	io->set_iomap_range_rw(0x10, 0x11, printer);
#endif
	
	// 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;
}

// ----------------------------------------------------------------------------
// 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();
}

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

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

// ----------------------------------------------------------------------------
// 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
	psg->initialize_sound(rate, 3579545, samples, 0, 0);
	pcm->initialize_sound(rate, 8000);
}

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) {
	psg->set_volume(1, decibel_l, decibel_r);
	} else if(ch == 1) {
		pcm->set_volume(0, decibel_l, decibel_r);
	} else if(ch == 2) {
		drec->set_volume(0, decibel_l, decibel_r);
	} else if(ch == 6) {
		drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
		drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
		drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
	}
}
#endif

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

void VM::open_cart(int drv, const _TCHAR* file_path)
{
	if(drv == 0) {
		slot_cart[drv]->open_cart(file_path);
		memory->set_context_slot(MAINROM_SLOT, slot_cart[0]);
	}

	reset();
}

void VM::close_cart(int drv)
{
	if(drv == 0) {
		slot_cart[drv]->close_cart();
		memory->set_context_slot(MAINROM_SLOT, slot_mainrom);
	}
	reset();
}

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

void VM::play_tape(int drv, const _TCHAR* file_path)
{
	bool remote = drec->get_remote();
	
	if(drec->play_tape(file_path) && remote) {
		// if machine already sets remote on, start playing now
		push_play(drv);
	}
}

void VM::rec_tape(int drv, const _TCHAR* file_path)
{
	bool remote = drec->get_remote();
	
	if(drec->rec_tape(file_path) && remote) {
		// if machine already sets remote on, start recording now
		push_play(drv);
	}
}

void VM::close_tape(int drv)
{
	emu->lock_vm();
	drec->close_tape();
	emu->unlock_vm();
	drec->set_remote(false);
}

bool VM::is_tape_inserted(int drv)
{
	return drec->is_tape_inserted();
}

bool VM::is_tape_playing(int drv)
{
	return drec->is_tape_playing();
}

bool VM::is_tape_recording(int drv)
{
	return drec->is_tape_recording();
}

int VM::get_tape_position(int drv)
{
	return drec->get_tape_position();
}

const _TCHAR* VM::get_tape_message(int drv)
{
	return drec->get_message();
}

void VM::push_play(int drv)
{
	drec->set_remote(false);
	drec->set_ff_rew(0);
	drec->set_remote(true);
}

void VM::push_stop(int drv)
{
	drec->set_remote(false);
}

void VM::push_fast_forward(int drv)
{
	drec->set_remote(false);
	drec->set_ff_rew(1);
	drec->set_remote(true);
}

void VM::push_fast_rewind(int drv)
{
	drec->set_remote(false);
	drec->set_ff_rew(-1);
	drec->set_remote(true);
}

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	5

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;
}

memory_ex.h

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/memory.h

	modified by tanam
	Date   : 2018.12.09-

	[ memory ]
*/

#ifndef _MEMORY_EX_H_
#define _MEMORY_EX_H_

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

// MAIN ROM 32K

class SLOT_MAINROM : public DEVICE
{
private:
	uint8_t wdmy[0x2000];
	uint8_t rdmy[0x2000];
	uint8_t* wbank[8];
	uint8_t* rbank[8];
	uint8_t rom[0x8000];
	uint8_t ram[0x8000];
public:
	SLOT_MAINROM(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
	{
		set_device_name(_T("Main ROM"));
	}
	~SLOT_MAINROM() {}
	
	// common functions
	void initialize();
	void write_data8(uint32_t addr, uint32_t data);
	uint32_t read_data8(uint32_t addr);
	bool process_state(FILEIO* state_fio, bool loading);
};

// Cart 64K

class SLOT_CART : public DEVICE
{
private:
	uint8_t wdmy[0x2000];
	uint8_t rdmy[0x2000];
	uint8_t* wbank[8];
	uint8_t* rbank[8];
	uint8_t rom[0x8000];
	uint8_t ram[0x8000];
	bool inserted;
	
public:
	SLOT_CART(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
	{
		set_device_name(_T("ROM Cartridge"));
	}
	~SLOT_CART() {}
	
	// common functions
	void initialize();
	void write_data8(uint32_t addr, uint32_t data);
	uint32_t read_data8(uint32_t addr);
	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;
	}
	bool load_cart(const _TCHAR *file_path/*, uint8_t *rom*/);
};

// memory bus

class MEMORY_EX : public DEVICE
{
private:
	DEVICE *d_slot[4];
	uint8_t ram[0x10000];
	uint8_t strig;
	
public:
	MEMORY_EX(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
	{
		set_device_name(_T("Memory Bus"));
		strig=0xff;
	}
	~MEMORY_EX() {}
	
	// common functions
	void reset();
	void write_data8(uint32_t addr, uint32_t data);
	uint32_t read_data8(uint32_t addr);
	uint32_t fetch_op(uint32_t addr, int* wait);
	bool process_state(FILEIO* state_fio, bool loading);
	uint32_t read_io8(uint32_t addr)
	{
		return strig;
	}
	void write_io8(uint32_t addr, uint32_t data)
	{
		strig = data;
	}
	void set_context_slot(int drv, DEVICE *device)
	{
		d_slot[drv] = device;
	}
};

#endif

memory_ex.cpp

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/memory_ex.cpp

	modified by tanam
	Date   : 2018.12.09-

	[ memory ]
*/

#include "memory_ex.h"

#define EVENT_CLOCK	0

#define SET_BANK(s, e, w, r) { \
	int sb = (s) >> 13, eb = (e) >> 13; \
	for(int i = sb; i <= eb; i++) { \
		if((w) == wdmy) { \
			wbank[i] = wdmy; \
		} else { \
			wbank[i] = (w) + 0x2000 * (i - sb); \
		} \
		if((r) == rdmy) { \
			rbank[i] = rdmy; \
		} else { \
			rbank[i] = (r) + 0x2000 * (i - sb); \
		} \
	} \
}

bool SLOT_CART::load_cart(const _TCHAR *file_path/*, uint8_t *rom*/)
{
	bool result = false;
	FILEIO* fio = new FILEIO();
	if(fio->Fopen(file_path, FILEIO_READ_BINARY)) {
		memset(rom, 0xff, sizeof(rom));
		fio->Fread(rom, sizeof(rom), 1);
		SET_BANK(0x0000, 0x7fff, wdmy, rom);
		SET_BANK(0x8000, 0xffff, ram, ram);
		fio->Fclose();
		result = true;
	}
	delete fio;
	return result;
}

// MAIN ROM 32K

void SLOT_MAINROM::initialize()
{
	memset(rom, 0xff, sizeof(rom));
	memset(ram, 0, sizeof(ram));
	FILEIO* fio = new FILEIO();
	if((fio->Fopen(create_local_path(_T("SVI318.ROM")), FILEIO_READ_BINARY)) ||
	   (fio->Fopen(create_local_path(_T("SVI328.ROM")), FILEIO_READ_BINARY)) ||
	   (fio->Fopen(create_local_path(_T("SVI328a.ROM")), FILEIO_READ_BINARY))) {
		fio->Fread(rom, sizeof(rom), 1);
		fio->Fclose();
	}
	delete fio;
	
	SET_BANK(0x0000, 0x7fff, wdmy, rom);
	SET_BANK(0x8000, 0xffff, ram, ram);
}

void SLOT_MAINROM::write_data8(uint32_t addr, uint32_t data)
{
	wbank[addr >> 13][addr & 0x1fff] = data;
}

uint32_t SLOT_MAINROM::read_data8(uint32_t addr)
{
	return rbank[addr >> 13][addr & 0x1fff];
}

#define SLOT_MAINROM_STATE_VERSION	1

bool SLOT_MAINROM::process_state(FILEIO* state_fio, bool loading)
{
	if(!state_fio->StateCheckUint32(SLOT_MAINROM_STATE_VERSION)) {
		return false;
	}
	if(!state_fio->StateCheckInt32(this_device_id)) {
		return false;
	}
	return true;
}

// Cart

void SLOT_CART::initialize()
{
	memset(rdmy, 0xff, sizeof(rdmy));
	close_cart();
}

void SLOT_CART::write_data8(uint32_t addr, uint32_t data)
{
	wbank[addr >> 13][addr & 0x1fff] = data;
}

uint32_t SLOT_CART::read_data8(uint32_t addr)
{
	return rbank[addr >> 13][addr & 0x1fff];
}

void SLOT_CART::open_cart(const _TCHAR *file_path)
{
	if(load_cart(file_path/*, rom*/)) {
		inserted = true;
	}
}

void SLOT_CART::close_cart()
{
	SET_BANK(0x0000, 0xffff, wdmy, rdmy);
	inserted = false;
}


#define SLOT_CART_STATE_VERSION	1

bool SLOT_CART::process_state(FILEIO* state_fio, bool loading)
{
	if(!state_fio->StateCheckUint32(SLOT_CART_STATE_VERSION)) {
		return false;
	}
	if(!state_fio->StateCheckInt32(this_device_id)) {
		return false;
	}
	state_fio->StateValue(inserted);
	// post process
	if(loading) {
		if(inserted) {
			SET_BANK(0x0000, 0xffff, wdmy, rom);
		} else {
			SET_BANK(0x0000, 0xffff, wdmy, rdmy);
		}
	}
	return true;
}

// memory bus

void MEMORY_EX::reset()
{
	return;
}

void MEMORY_EX::write_data8(uint32_t addr, uint32_t data)
{
	d_slot[0]->write_data8(addr, data);
}

uint32_t MEMORY_EX::read_data8(uint32_t addr)
{
	return d_slot[0]->read_data8(addr);
}

uint32_t MEMORY_EX::fetch_op(uint32_t addr, int* wait)
{
	*wait = 1;
	return read_data8(addr);
}

#define STATE_VERSION	1

bool MEMORY_EX::process_state(FILEIO* state_fio, bool loading)
{
	if(!state_fio->StateCheckUint32(STATE_VERSION)) {
		return false;
	}
	if(!state_fio->StateCheckInt32(this_device_id)) {
		return false;
	}
	return true;
}

keyboard.h

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/keyboard.h

	modified by tanam
	Date   : 2018.12.09-

	[ keyboard ]
*/

#ifndef _KEYBOARD_H_
#define _KEYBOARD_H_

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

#define SIG_KEYBOARD_COLUMN	0

class KEYBOARD : public DEVICE
{
private:
//	DEVICE *d_cpu, *d_pio;
	DEVICE *d_pio;
	
	const uint8_t* key_stat;
	uint8_t column;
//	bool break_pressed;
	
	void update_keyboard();
	
public:
	KEYBOARD(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
	{
		set_device_name(_T("Keyboard"));
	}
	~KEYBOARD() {}
	
	// common functions
	void initialize();
	void event_frame();
	void write_signal(int id, uint32_t data, uint32_t mask);
	bool process_state(FILEIO* state_fio, bool loading);
	
	// unique functions
//	void set_context_cpu(DEVICE* device)
//	{
//		d_cpu = device;
//	}
	void set_context_pio(DEVICE* device)
	{
		d_pio = device;
	}
};
#endif

keyboard.cpp

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/keyboard.cpp

	modified by tanam
	Date   : 2018.12.09-

	[ keyboard ]
*/

#include "keyboard.h"
#include "../i8255.h"

static const uint8_t key_map[11][8] = {
	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
	0x38, 0x39, 0xbb, 0xba, 0xbc, 0xde, 0xbe, 0xbf,
	0xbd, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
	0x58, 0x59, 0x5a, 0xdb, 0xdc, 0xdd, 0x08, 0x26, 
	0x10, 0x11, 0xa4, 0xa5, 0x1b, 0x75, 0x0d, 0x25,
	0x70, 0x71, 0x72, 0x73, 0x74, 0x24, 0x2d, 0x28,
	0x20, 0x09, 0x2e, 0x14, 0x76, 0x77, 0x00, 0x27,
	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
	0x68, 0x69, 0x6b, 0x6d, 0x6a, 0x6f, 0x6e, 0x6c
};

void KEYBOARD::initialize()
{
	key_stat = emu->get_key_buffer();
	column = 0;
//	break_pressed = false;
	
	// register event to update the key status
	register_frame_event(this);
}

void KEYBOARD::event_frame()
{
//	bool new_pressed = (key_stat[0x13] != 0);
//	if(new_pressed && !break_pressed) {
//		d_cpu->write_signal(SIG_CPU_NMI, 1, 1);
//	}
//	break_pressed = new_pressed;
	
	update_keyboard();
}

void KEYBOARD::write_signal(int id, uint32_t data, uint32_t mask)
{
	if(column != (data & mask)) {
		column = data & mask;
		update_keyboard();
	}
}

void KEYBOARD::update_keyboard()
{
	uint8_t val = 0;
	
	if(column < 11) {
		for(int i = 0; i < 8; i++) {
			if(key_stat[key_map[column][i]] != 0) {
				val |= 1 << i;
			}
		}
	}
	d_pio->write_signal(SIG_I8255_PORT_B, ~val, 0xff);
}

#define STATE_VERSION	2

bool KEYBOARD::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->StateValue(column);
//	state_fio->StateValue(break_pressed);
	return true;
}

joystick.h

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/joystick.h

	modified by tanam
	Date   : 2018.12.09-

	[ joystick ]
*/

#ifndef _JOYSTICK_H_
#define _JOYSTICK_H_

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

#define SIG_JOYSTICK_SEL	0

class JOYSTICK : public DEVICE
{
private:
	DEVICE *d_psg;
	DEVICE *d_memory;
	const uint32_t *joy_stat;
	int select;
	
public:
	JOYSTICK(VM_TEMPLATE* parent_vm, EMU* parent_emu) : DEVICE(parent_vm, parent_emu)
	{
		set_device_name(_T("Joystick I/F"));
	}
	~JOYSTICK() {}
	
	// common functions
	void initialize();
	void event_frame();
//	void write_signal(int id, uint32_t data, uint32_t mask);
	bool process_state(FILEIO* state_fio, bool loading);
	
	// unique function
	void set_context_psg(DEVICE* device)
	{
		d_psg = device;
	}
	void set_context_memory(DEVICE* device)
	{
		d_memory = device;
	}
};

#endif

joystick.cpp

/*
	Common Source Code Project
	SVI-3x8

	Origin : src/vm/msx/joystick.cpp

	modified by tanam
	Date   : 2018.12.09-

	[ joystick ]
*/

#include "joystick.h"
#include "memory_ex.h"
#include "../ay_3_891x.h"

#if defined(MSX_KEYBOARD_50ON)
#define PSG14_MASK 0x3f
#else
#define PSG14_MASK 0x7f
#endif

void JOYSTICK::initialize()
{
	joy_stat = emu->get_joy_buffer();
	select = 0;
	
	// register event to update the key status
	register_frame_event(this);
}

void JOYSTICK::event_frame()
{
///	d_psg->write_signal(SIG_AY_3_891X_PORT_A, PSG14_MASK & ~(joy_stat[select] & 0x3f), 0x7f);
	d_psg->write_signal(SIG_AY_3_891X_PORT_A, ~((joy_stat[0] & 0x0f)|(joy_stat[1] & 0x0f)<<4), 0xff);
	d_memory->write_io8(select, ~((joy_stat[0] & 0x10)|(joy_stat[1] & 0x10)<<1));
}

#define STATE_VERSION	1

bool JOYSTICK::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->StateValue(select);
	return true;
}