/*
	NEC PC-9801 Emulator 'ePC-9801'
	NEC PC-9801E/F/M Emulator 'ePC-9801E'
	NEC PC-9801U Emulator 'ePC-9801U'
	NEC PC-9801VF Emulator 'ePC-9801VF'
	NEC PC-9801VM Emulator 'ePC-9801VM'
	NEC PC-9801VX Emulator 'ePC-9801VX'
	NEC PC-9801RA Emulator 'ePC-9801RA'
	NEC PC-98XA Emulator 'ePC-98XA'
	NEC PC-98XL Emulator 'ePC-98XL'
	NEC PC-98RL Emulator 'ePC-98RL'
	NEC PC-98DO Emulator 'ePC-98DO'

	Author : Takeda.Toshiya
	Date   : 2017.06.22-

	[ memory bus ]
*/

#include "membus.h"
#include "display.h"

#ifdef _MSC_VER
	// Microsoft Visual C++
	#pragma warning( disable : 4065 )
#endif

/*
	NORMAL PC-9801
		00000h - 9FFFFh: RAM
		A0000h - A1FFFh: TEXT VRAM
		A2000h - A3FFFh: ATTRIBUTE
		A4000h - A4FFFh: CG WINDOW
		A8000h - BFFFFh: VRAM (BRG)
		C0000h - DFFFFh: EXT BIOS
			CC000h - CFFFFh: SOUND BIOS
			D6000h - D6FFFh: 2DD FDD BIOS
			D7000h - D7FFFh: 2HD FDD BIOS
			D7000h - D7FFFh: SASI BIOS
			D8000h - DBFFFh: IDE BIOS
			DC000h - DCFFFh: SCSI BIOS
		E0000h - E7FFFh: VRAM (I)
		E8000h - FFFFFh: BIOS

	HIRESO PC-98XA/XL/XL^2/RL
		00000h - 7FFFFh: RAM
		80000h - BFFFFh: MEMORY WINDOW
		C0000h - DFFFFh: VRAM
		E0000h - E1FFFh: TEXT VRAM
		E2000h - E3FFFh: ATTRIBUTE
		E4000h - E4FFFh: CG WINDOW
		F0000h - FFFFFh: BIOS
*/

namespace PC9801 {

// This code from NP2.cbus/sasibios.res
static const uint8_t pseudo_sasi_bios[] = {
			0xcb,0x90,0x90,0xcb,0x90,0x90,0xcb,0x90,0x90,0x55,0xaa,0x02,
			0xeb,0x22,0x90,0xeb,0x23,0x90,0xcb,0x90,0x90,0xeb,0x54,0x90,
			0xeb,0x33,0x90,0xcb,0x90,0x90,0xcb,0x90,0x90,0xcb,0x90,0x90,
			0xcb,0x90,0x90,0xcb,0x90,0x90,0xcb,0x90,0x90,0xcb,0x90,0x90,
			0xc6,0x07,0xd9,0xcb,0x8c,0xc8,0xc7,0x06,0x44,0x00,0x9d,0x00,
			0xa3,0x46,0x00,0x88,0x26,0xb0,0x04,0x88,0x26,0xb8,0x04,0xb8,
			0x00,0x03,0xcd,0x1b,0xcb,0xfc,0x8c,0xca,0x8e,0xda,0xb9,0x08,
			0x00,0xbe,0xcf,0x00,0xba,0xef,0x07,0xfa,0xac,0xee,0xe2,0xfc,
			0xfb,0x58,0x5b,0x59,0x5a,0x5d,0x07,0x5f,0x5e,0x1f,0xcf,0x3c,
			0x0a,0x74,0x05,0x3c,0x0b,0x74,0x01,0xcb,0x2c,0x09,0x84,0x06,
			0x5d,0x05,0x74,0x20,0xfe,0xc8,0xb4,0x06,0xb9,0xc0,0x1f,0x8e,
			0xc1,0x31,0xed,0xbb,0x00,0x04,0x31,0xc9,0x31,0xd2,0xcd,0x1b,
			0x72,0x0a,0x0c,0x80,0xa2,0x84,0x05,0x9a,0x00,0x00,0xc0,0x1f,
			0xcb,0x50,0xe4,0x82,0x24,0xfd,0x3c,0xad,0x74,0x06,0x24,0xf9,
			0x3c,0xa1,0x75,0x0f,0x1e,0x31,0xc0,0x8e,0xd8,0x80,0x0e,0x5f,
			0x05,0x01,0xb0,0xc0,0xe6,0x82,0x1f,0xb0,0x20,0xe6,0x08,0xb0,
			0x0b,0xe6,0x08,0xe4,0x08,0x84,0xc0,0x75,0x04,0xb0,0x20,0xe6,
			0x00,0x58,0xcf,0x73,0x61,0x73,0x69,0x62,0x69,0x6f,0x73,
};

#if defined(SUPPORT_24BIT_ADDRESS) || defined(SUPPORT_32BIT_ADDRESS)
#if !defined(SUPPORT_HIRESO)
	#define UPPER_MEMORY_24BIT	0x00fa0000
	#define UPPER_MEMORY_32BIT	0xfffa0000
#else
	#define UPPER_MEMORY_24BIT	0x00fc0000
	#define UPPER_MEMORY_32BIT	0xfffc0000
#endif
#endif
	
void MEMBUS::initialize()
{
	MEMORY::initialize();
	
	// RAM
	memset(ram, 0x00, sizeof(ram));
	// VRAM
	
	// BIOS
	memset(bios, 0xff, sizeof(bios));
	if(!read_bios(_T("IPL.ROM"), bios, sizeof(bios))) {
		read_bios(_T("BIOS.ROM"), bios, sizeof(bios));
	}
#if defined(SUPPORT_BIOS_RAM)
	memset(bios_ram, 0x00, sizeof(bios_ram));
	shadow_ram_selected = true;
#else
	shadow_ram_selected = false;
#endif

#if defined(SUPPORT_ITF_ROM)
	memset(itf, 0xff, sizeof(itf));
	read_bios(_T("ITF.ROM"), itf, sizeof(itf));
	itf_selected = true;
#endif
	
	// EXT BIOS
#if defined(_PC9801) || defined(_PC9801E)
	memset(fd_bios_2hd, 0xff, sizeof(fd_bios_2hd));
	read_bios(_T("2HDIF.ROM"), fd_bios_2hd, sizeof(fd_bios_2hd));
	
	memset(fd_bios_2dd, 0xff, sizeof(fd_bios_2dd));
	read_bios(_T("2DDIF.ROM"), fd_bios_2dd, sizeof(fd_bios_2dd));
#endif
	memset(sound_bios, 0xff, sizeof(sound_bios));
//	memset(sound_bios_ram, 0x00, sizeof(sound_bios_ram));
	sound_bios_selected = false;
//	sound_bios_ram_selected = false;
	if(config.sound_type == 0) {
		sound_bios_selected = (read_bios(_T("SOUND.ROM"), sound_bios, sizeof(sound_bios)) != 0);
	} else if(config.sound_type == 2) {
		sound_bios_selected = (read_bios(_T("MUSIC.ROM"), sound_bios, sizeof(sound_bios)) != 0);
	}
	if(sound_bios_selected) {
		d_display->sound_bios_ok();
	}
#if defined(SUPPORT_SASI_IF)
	sasi_bios_load = false;
	memset(sasi_bios, 0xff, sizeof(sasi_bios));
	memset(sasi_bios_ram, 0x00, sizeof(sasi_bios_ram));
	sasi_bios_selected = (read_bios(_T("SASI.ROM"), sasi_bios, sizeof(sasi_bios)) != 0);
	if(sasi_bios_selected) {
		sasi_bios_load = true;
	} else {
		memcpy(sasi_bios, pseudo_sasi_bios, sizeof(pseudo_sasi_bios));
		sasi_bios_selected = true;
	}

	sasi_bios_ram_selected = false;
#endif
#if defined(SUPPORT_SCSI_IF)
	memset(scsi_bios, 0xff, sizeof(scsi_bios));
	memset(scsi_bios_ram, 0x00, sizeof(scsi_bios_ram));
	scsi_bios_selected = (read_bios(_T("SCSI.ROM"), scsi_bios, sizeof(scsi_bios)) != 0);
	scsi_bios_ram_selected = false;
#endif
#if defined(SUPPORT_IDE_IF)
	memset(ide_bios, 0xff, sizeof(ide_bios));
	memset(ide_bios_ram, 0x00, sizeof(ide_bios_ram));
	ide_bios_selected = (read_bios(_T("IDE.ROM"), ide_bios, sizeof(ide_bios)) != 0);
	ide_bios_bank = 0;
#endif
//	page08_intram_selected = false;	
	page08_intram_selected = true;	
	// EMS
#if defined(SUPPORT_NEC_EMS)
	memset(nec_ems, 0, sizeof(nec_ems));
#endif
	last_access_is_interam = false;
	config_intram();
	update_bios();
}

void MEMBUS::reset()
{
	MEMORY::reset();
	config_intram();
	// BIOS/ITF
#if defined(SUPPORT_BIOS_RAM)
	bios_ram_selected = false;
	shadow_ram_selected = true;
#else
	shadow_ram_selected = false;
#endif
	
#if !defined(SUPPORT_HIRESO)
	// EMS
#if defined(SUPPORT_NEC_EMS)
	nec_ems_selected = false;
	update_nec_ems();
#endif
#endif

	// SASI
#if defined(SUPPORT_SASI_IF)
	sasi_bios_selected = true;
//	sasi_bios_selected = false;
	sasi_bios_ram_selected = false; // OK?
#endif
	// SASI
#if defined(SUPPORT_SCSI_IF)
	scsi_bios_selected = false;
	scsi_bios_ram_selected = false; // OK?
#endif
	// ToDo: IDE
#if defined(SUPPORT_IDE_IF)
	ide_bios_bank = 0; // ToDo: BANK
#endif
#if defined(SUPPORT_24BIT_ADDRESS) || defined(SUPPORT_32BIT_ADDRESS)
#if !defined(SUPPORT_HIRESO)
	dma_access_ctrl = 0xfe; // bit2 = 1, bit0 = 0
	dma_access_a20 = false;
	window_80000h = 0x80000;
	window_a0000h = 0xa0000;
#else
	dma_access_ctrl = 0xfb; // bit2 = 0, bit0 = 1
	dma_access_a20 = true;
	window_80000h = 0x100000;
	window_a0000h = 0x120000;
#endif
#endif
	page08_intram_selected = true;	

	update_bios();
}

void MEMBUS::write_io8(uint32_t addr, uint32_t data)
{
	//out_debug_log(_T("I/O WRITE $%04x %04x\n"), addr, data);
	switch(addr) {
#if defined(SUPPORT_ITF_ROM)
	case 0x043d:
		switch(data & 0xff) {
	#if defined(SUPPORT_HIRESO)
		case 0x00:
		case 0x18:
	#endif
		case 0x10:
			if(!itf_selected) {
				itf_selected = true;
				update_bios();
			}
			break;
	#if defined(SUPPORT_HIRESO)
		case 0x02:
	#endif
		case 0x12:
			if(itf_selected) {
				itf_selected = false;
				update_bios();
			}
			break;
		}
		break;
#endif
#if !defined(SUPPORT_HIRESO)
	case 0x043f:
		switch(data & 0xff) {
		case 0x20:
#if defined(SUPPORT_NEC_EMS)
			if(nec_ems_selected) {
				nec_ems_selected = false;
				update_nec_ems();
			}
#endif
			break;
		case 0x22:
#if defined(SUPPORT_NEC_EMS)
			if(!nec_ems_selected) {
				nec_ems_selected = true;
				update_nec_ems();
			}
#endif
			break;
		case 0xc0:
#if defined(SUPPORT_SASI_IF)
			// Changing ROM/RAM may select SASI I/F board.20190321 K.O
			if(sasi_bios_selected) {
				if(sasi_bios_ram_selected) {
					sasi_bios_ram_selected = false;
					update_sasi_bios();
				}
			}
#endif
#if defined(SUPPORT_SCSI_IF)
			// Changing ROM/RAM maybe select SCSI I/F board.(Still not tested)20190321 K.O 
			if(scsi_bios_selected) {
				if(scsi_bios_ram_selected) {
					scsi_bios_ram_selected = false;
					update_scsi_bios();
				}
			}
#endif
			break;
		case 0xc2:
#if defined(SUPPORT_SASI_IF)
			// Changing ROM/RAM may select SASI I/F board.20190321 K.O
			if(sasi_bios_selected) {
				if(!sasi_bios_ram_selected) {
					sasi_bios_ram_selected = true;
					update_sasi_bios();
				}
			}
#endif
			break;
		case 0xc4:
#if defined(SUPPORT_SCSI_IF)
			// Changing ROM/RAM maybe select SCSI I/F board.(Still not tested)20190321 K.O 
			if(scsi_bios_selected) {
				if(!scsi_bios_ram_selected) {
					scsi_bios_ram_selected = true;
					update_scsi_bios();
				}
			}
#endif
			break;
		case 0x80:
			if(!(page08_intram_selected)) {
				page08_intram_selected = true;
//#if !defined(_PC9801RA)
				update_bios();
//#endif
			}
			break;
		case 0x82:
			if(page08_intram_selected) {
				page08_intram_selected = false;
//#if !defined(_PC9801RA)
				update_bios();
//#endif
			}
			break;
		}
		break;
#endif
#if defined(SUPPORT_24BIT_ADDRESS) || defined(SUPPORT_32BIT_ADDRESS)
#if !defined(_PC98XA)
	case 0x0439:
		dma_access_ctrl = data;
		dma_access_a20 = ((data & 0x04) != 0) ? false : true;
		break;
#endif
#if defined(SUPPORT_HIRESO)
	case 0x0091:
		{
			uint32_t _bak = window_80000h;
#if defined(_PC98XA)
			if(data < 0x10) {
				//update_bios();
				break;
			}
#endif
			// http://www.webtech.co.jp/company/doc/undocumented_mem/io_mem.txt
			window_80000h = (data & 0xfe) << 16;
			if(_bak != window_80000h) {
				update_bios();
			}
		}
		break;
#endif
#if 1
	case 0x0461:
		// http://www.webtech.co.jp/company/doc/undocumented_mem/io_mem.txt
		// ToDo: Cache flush for i486 or later.
		{
			uint32_t _bak = window_80000h;
			window_80000h = (data & 0xfe) << 16;
			if(_bak != window_80000h) {
				update_bios();
			}
		}
		break;
#endif
#if defined(SUPPORT_HIRESO)
	case 0x0093:
#if defined(_PC98XA)
		if(data < 0x10) {
			break;
		}
#endif
		// http://www.webtech.co.jp/company/doc/undocumented_mem/io_mem.txt
		{
			uint32_t _bak = window_a0000h;
			window_a0000h = (data & 0xfe) << 16;
			if(_bak != window_a0000h) {
				update_bios();
			}
		}
		break;
#endif
#if 1
	case 0x0463:
		// http://www.webtech.co.jp/company/doc/undocumented_mem/io_mem.txt
		// ToDo: Cache flush for i486 or later.
		{
			uint32_t _bak = window_a0000h;
			window_a0000h = (data & 0xfe) << 16;
			if(_bak != window_a0000h) {
				update_bios();
			}
		}
		break;
#endif
#endif
#if defined(SUPPORT_32BIT_ADDRESS)
	case 0x053d:
		{
			bool result = false;
			bool _bak;
#if !defined(SUPPORT_HIRESO)
			{
				_bak = sound_bios_selected;
				sound_bios_selected = ((data & 0x80) != 0);
				if(_bak != sound_bios_selected) result = true;
			}
#endif
		
#if defined(SUPPORT_SASI_IF)
			{
				_bak = sasi_bios_selected;
				sasi_bios_selected = ((data & 0x40) != 0);
				if(_bak != sasi_bios_selected) result = true;
			}
#endif
#if defined(SUPPORT_SCSI_IF)
			{
				_bak = scsi_bios_selected;
				scsi_bios_selected = ((data & 0x20) != 0);
				if(_bak != scsi_bios_selected) result = true;
			}
#endif
#if defined(SUPPORT_IDE_IF)
			{
				_bak = ide_bios_selected;
				ide_bios_selected = ((data & 0x10) != 0);
				if(_bak != ide_bios_selected) result = true;
			}
#endif
			{
				_bak = shadow_ram_selected;
				shadow_ram_selected = ((data & 0x04) == 0);
				if(_bak != shadow_ram_selected) result = true;
			}
#if defined(SUPPORT_BIOS_RAM)
			{
				_bak = bios_ram_selected;
				bios_ram_selected = ((data & 0x02) != 0);
				if(_bak != bios_ram_selected) result = true;
			}
#endif
			if(result) update_bios();
		}
		break;
#endif
	// dummy for no cases
	default:
		break;
	}
}

uint32_t MEMBUS::read_io8(uint32_t addr)
{
	//out_debug_log(_T("I/O READ $%04x\n"), addr);
	switch(addr) {
#if defined(SUPPORT_24BIT_ADDRESS) || defined(SUPPORT_32BIT_ADDRESS)
#if !defined(_PC98XA)
	case 0x0439:
		return dma_access_ctrl;
#endif
#if !defined(SUPPORT_HIRESO)
	case 0x0461:
#else
	case 0x0091:
#endif
		return window_80000h >> 16;
#if !defined(SUPPORT_HIRESO)
	case 0x0463:
#else
	case 0x0093:
#endif
		return window_a0000h >> 16;
	case 0x0567:
		return (uint8_t)(sizeof(ram) >> 17);
#endif
	// dummy for no cases
	default:
		break;
	}
	return 0xff;
}
#if defined(SUPPORT_32BIT_ADDRESS) || defined(SUPPORT_24BIT_ADDRESS)
uint32_t MEMBUS::read_dma_data8(uint32_t addr)
{
	if(!(dma_access_a20)) {
		addr &= 0x000fffff;
	}
	return MEMBUS::read_data8(addr);
}

void MEMBUS::write_dma_data8(uint32_t addr, uint32_t data)
{
	if(!(dma_access_a20)) {
		addr &= 0x000fffff;
	}
	MEMBUS::write_data8(addr, data);
}
#endif

uint32_t MEMBUS::read_signal(int ch)
{
	switch(ch) {
	case SIG_LAST_ACCESS_INTERAM:
		return ((last_access_is_interam) ? 0xffffffff : 0x00000000);
		break;
	}
	return 0;
}

void MEMBUS::config_intram()
{
#if !defined(SUPPORT_HIRESO)
	#if defined(SUPPORT_32BIT_ADDRESS)
	set_memory_rw(0x00000, (sizeof(ram) >= 0x80000) ? 0x7ffff :  (sizeof(ram) - 1), ram);
	#elif defined(SUPPORT_24BIT_ADDRESS)
	set_memory_rw(0x00000, (sizeof(ram) >= 0x80000) ? 0x7ffff :  (sizeof(ram) - 1), ram);
	#else
	set_memory_rw(0x00000, (sizeof(ram) >= 0xc0000) ? 0xbffff :  (sizeof(ram) - 1), ram);
	#endif	
#else
	set_memory_rw(0x00000, 0xbffff, ram);
#endif
#if defined(SUPPORT_24BIT_ADDRESS) || defined(SUPPORT_32BIT_ADDRESS)
	if(sizeof(ram) > 0x100000) {
		set_memory_rw(0x100000, (sizeof(ram) >= 0xe00000) ? 0xdfffff : (sizeof(ram) - 1), ram + 0x100000);
	}
	unset_memory_rw((sizeof(ram) >= 0x00e00000) ? 0x00e00000 : sizeof(ram), 0x00efffff); 
#endif
}

void MEMBUS::update_bios()
{
#if !defined(SUPPORT_HIRESO)
	#if defined(SUPPORT_32BIT_ADDRESS)|| defined(SUPPORT_24BIT_ADDRESS)
	unset_memory_rw(0x80000, 0xbffff);
	#endif
	set_memory_mapped_io_rw(0xa0000, 0xa4fff, d_display);
	set_memory_mapped_io_rw(0xa8000, 0xbffff, d_display);
#else
	unset_memory_rw(0xc0000, 0xe4fff);
#endif
#if !defined(SUPPORT_HIRESO)
	{
		unset_memory_rw(0xc0000, 0xe7fff);
		//#endif
		#if defined(_PC9801) || defined(_PC9801E)
		set_memory_r(0xd6000, 0xd6fff, fd_bios_2dd);
		set_memory_r(0xd7000, 0xd7fff, fd_bios_2hd);
		#endif
		#if defined(SUPPORT_16_COLORS)
		set_memory_mapped_io_rw(0xe0000, 0xe7fff, d_display);
		#endif
		update_sound_bios();

		#if defined(SUPPORT_SASI_IF)
		update_sasi_bios();
		#endif
		#if defined(SUPPORT_SCSI_IF)
		update_scsi_bios();
		#endif
		#if defined(SUPPORT_IDE_IF)
		update_ide_bios();
		#endif
	}
#else // HIRESO
	set_memory_mapped_io_rw(0xc0000, 0xe4fff, d_display);
	#if defined(SUPPORT_BIOS_RAM) && defined(SUPPORT_32BIT_ADDRESS)
	if(shadow_ram_selected) {
		set_memory_rw(0xc0000, 0xe7fff, &(ram[0xc0000])); // OK?
	}
	#endif
#endif
	{	
#if defined(SUPPORT_BIOS_RAM)
		if(bios_ram_selected) {
			set_memory_rw(0x00100000 - sizeof(bios_ram), 0x000fffff, bios_ram);
		} else
#endif
		{
			set_memory_r(0x00100000 - sizeof(bios), 0x000fffff, bios);
			unset_memory_w(0x00100000 - sizeof(bios), 0x000fffff);
		}
	}
#if defined(SUPPORT_ITF_ROM)
	if(itf_selected) {
//			unset_memory_rw(0x00100000 - sizeof(bios), 0x000fffff);
		set_memory_r(0x00100000 - sizeof(itf), 0x000fffff, itf);
		unset_memory_w(0x00100000 - sizeof(itf), 0x000fffff);
	} //else
#endif
			
#if defined(SUPPORT_32BIT_ADDRESS) || defined(SUPPORT_24BIT_ADDRESS)
	if((page08_intram_selected) /*&& (shadow_ram_selected)*/){
		if((window_80000h == 0xc0000)) {
#if defined(SUPPORT_32BIT_ADDRESS) && defined(SUPPORT_BIOS_RAM)
			if(shadow_ram_selected) {
				set_memory_rw(0x80000, 0x9ffff, &(ram[window_80000h]));
			} else {
				copy_table_rw(0x80000, 0xc0000, 0xdffff);
			}
#else
			copy_table_rw(0x80000, 0xc0000, 0xdffff);
#endif
		} else 	if(window_80000h == 0xe0000) {
#if defined(SUPPORT_32BIT_ADDRESS) && defined(SUPPORT_BIOS_RAM)
			if(shadow_ram_selected) {
	#if !defined(SUPPORT_HIRESO)
				//copy_table_rw(0x80000, 0xe0000, 0xe7fff);
				set_memory_rw(0x80000, 0x87fff, &(ram[window_80000h]));
				set_memory_rw(0x88000, 0x9ffff, bios_ram);
	#else
				//copy_table_rw(0x80000, 0xe0000, 0xeffff);
				set_memory_rw(0x80000, 0x8ffff, &(ram[window_80000h]));
				set_memory_rw(0x90000, 0x9ffff, bios_ram);
	#endif
			} else {
				copy_table_rw(0x80000, 0xe0000, 0xfffff);
			}
#else
				copy_table_rw(0x80000, 0xe0000, 0xfffff);
#endif
		} else if((window_80000h == 0x80000) || (((window_80000h + 0x1ffff) < sizeof(ram)) && !((window_80000h >= 0xa0000) && (window_80000h <= 0xfffff)))) { // ToDo: Extra RAM
			set_memory_rw(0x80000, 0x9ffff, &(ram[window_80000h]));
		} else if(window_80000h >= 0xa0000) {
			copy_table_rw(0x00080000, window_80000h, window_80000h + 0x1ffff);
		} else {
			#if defined(SUPPORT_24BIT_ADDRESS)
			set_memory_rw(0x80000, 0x9ffff, &(ram[0x80000]));
			#else
			set_memory_rw(0x80000, 0x9ffff, &(ram[0x80000]));
			//unset_memory_rw(0x80000, 0x9ffff);
			#endif
		}
	} else {
		// ToDo: Hi reso
		if(window_80000h < 0x80000) {
		#if defined(SUPPORT_BIOS_RAM)
			if(!(bios_ram_selected)) {
				unset_memory_rw(0x00080000, 0x0009ffff);
			} else
		#endif				
			set_memory_rw(0x80000, 0x9ffff, &(ram[window_80000h]));
		} else if(window_80000h == 0x80000) {
			// ToDo: External BUS
			unset_memory_rw(0x00080000, 0x0009ffff);
		} else {
			copy_table_rw(0x00080000, window_80000h, window_80000h + 0x1ffff);
		}
	}

	/*if((page08_intram_selected) )*/{
		if((window_a0000h == 0xc0000)) {
#if defined(SUPPORT_32BIT_ADDRESS) && defined(SUPPORT_BIOS_RAM)
			if(shadow_ram_selected) {
				//copy_table_rw(0xa0000, 0xc0000, 0xdffff); 
				set_memory_rw(0xa0000, 0xbffff, &(ram[window_a0000h]));
			} else {
				copy_table_rw(0xa0000, 0xc0000, 0xdffff); 
			}
#else
			copy_table_rw(0xa0000, 0xc0000, 0xdffff);
#endif
		} else 	if(window_a0000h == 0xe0000) {
#if defined(SUPPORT_32BIT_ADDRESS) && defined(SUPPORT_BIOS_RAM)
			if(shadow_ram_selected) {
	#if !defined(SUPPORT_HIRESO)
				//copy_table_rw(0xa0000, 0xe0000, 0xe7fff); 
				set_memory_rw(0xa0000, 0xa7fff, &(ram[window_a0000h]));
				set_memory_rw(0xa8000, 0xbffff, bios_ram);
	#else
				//copy_table_rw(0xa0000, 0xe0000, 0xeffff); 
				set_memory_rw(0xa0000, 0xaffff, &(ram[window_a0000h]));
				set_memory_rw(0xb0000, 0xbffff, bios_ram);
	#endif
			} else {
				copy_table_rw(0xa0000, 0xe0000, 0xfffff); 
			}
#else
			copy_table_rw(0xa0000, 0xe0000, 0xfffff); 
#endif
		} else if((window_a0000h >= 0x80000) && ((window_a0000h + 0x1ffff) < sizeof(ram)) && !((window_a0000h >= 0xa0000) && (window_a0000h <= 0xfffff))) {
			set_memory_rw(0xa0000, 0xbffff, &(ram[window_a0000h]));
		} else {
			if(window_a0000h >= 0x80000) {
				copy_table_rw(0x000a0000, window_a0000h, window_a0000h + 0x1ffff);
			} else {
				unset_memory_rw(0xa0000, 0xbffff);
			}
			
		}
	} //else {
	//	// NOOP
	//}
	if((window_80000h >= 0xa0000) && (window_80000h <= 0xeffff)) {
		d_display->write_signal(SIG_DISPLAY98_SET_PAGE_80, window_80000h, 0xffffffff);
	}
	if((window_a0000h >= 0xa0000) && (window_a0000h <= 0xeffff)) {
		d_display->write_signal(SIG_DISPLAY98_SET_PAGE_A0, window_a0000h, 0xffffffff);
	}

	// ToDo: PC9821
	#if defined(SUPPORT_32BIT_ADDRESS)
	unset_memory_rw(0x00f00000, (UPPER_MEMORY_32BIT & 0x00ffffff) - 1);
	#if !defined(SUPPORT_HIRESO)
	copy_table_rw(0x00ee8000, 0x000e8000, 0x000fffff);
	copy_table_rw(0x00fe8000, 0x000e8000, 0x000fffff);
	#endif
	copy_table_rw(UPPER_MEMORY_32BIT, (UPPER_MEMORY_32BIT & 0x000fffff), 0x000fffff);
	copy_table_rw((UPPER_MEMORY_32BIT & 0x00ffffff), (UPPER_MEMORY_32BIT & 0x000fffff), 0x000fffff);
	#elif defined(SUPPORT_24BIT_ADDRESS)
	unset_memory_rw(0x00f00000, UPPER_MEMORY_24BIT - 1);
	copy_table_rw(UPPER_MEMORY_24BIT, UPPER_MEMORY_24BIT & 0x000fffff, 0x000fffff);
	#endif
#endif
}


void MEMBUS::update_sound_bios()
{
	if(sound_bios_selected) {
//		if(sound_bios_selected) {
//			set_memory_r(0xcc000, 0xcffff, sound_bios_ram);
//		} else {
			set_memory_r(0xcc000, 0xcffff, sound_bios);
			unset_memory_w(0xcc000, 0xcffff);
//		}
	} else {
		unset_memory_rw(0xcc000, 0xcffff);
	}
}

#if defined(SUPPORT_SASI_IF)
void MEMBUS::update_sasi_bios()
{
//	out_debug_log(_T("SASI BIOS SELECTED: %s RAM=%s\n"), (sasi_bios_selected) ? _T("YES") : _T("NO"),
//				  (sasi_bios_ram_selected) ? _T("YES") : _T("NO"));
	if(sasi_bios_selected) {
		if(sasi_bios_ram_selected) {
			set_memory_rw(0xd7000, 0xd7fff, sasi_bios_ram);
		} else {
			set_memory_r(0xd7000, 0xd7fff, sasi_bios);
			unset_memory_w(0xd7000, 0xd7fff);
		}
	} else {
		unset_memory_rw(0xd7000, 0xd7fff);
	}
}
#endif

#if defined(SUPPORT_SCSI_IF)
void MEMBUS::update_scsi_bios()
{
	if(scsi_bios_selected) {
		if(scsi_bios_ram_selected) {
			set_memory_rw(0xdc000, 0xdcfff, scsi_bios_ram);
		} else {
			set_memory_r(0xdc000, 0xdcfff, scsi_bios);
			unset_memory_w(0xdc000, 0xdcfff);
		}
	} else {
		unset_memory_rw(0xdc000, 0xdcfff);
	}
}
#endif

#if defined(SUPPORT_IDE_IF)
void MEMBUS::update_ide_bios()
{
	if(ide_bios_selected) {
		set_memory_r(0xd8000, 0xd9fff, &(ide_bios[ide_bios_bank * 0x2000]));
		unset_memory_w(0xd8000, 0xdbfff);
		set_memory_rw(0xda000, 0xdbfff, ide_bios_ram);
//		}
	} else {
		unset_memory_rw(0xd8000, 0xdbfff);
	}
}
#endif

#if defined(SUPPORT_NEC_EMS)
void MEMBUS::update_nec_ems()
{
	if(nec_ems_selected) {
		unset_memory_rw(0xb0000, 0xbffff);
		set_memory_rw(0xb0000, 0xbffff, nec_ems);
	} else {
		unset_memory_rw(0xb0000, 0xbffff);
		set_memory_mapped_io_rw(0xb0000, 0xbffff, d_display);
	}
}
#endif


#define STATE_VERSION	10

bool MEMBUS::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);
 #if defined(SUPPORT_BIOS_RAM)
	state_fio->StateArray(bios_ram, sizeof(bios_ram), 1);
	state_fio->StateValue(bios_ram_selected);
 #endif
 #if defined(SUPPORT_ITF_ROM)
	state_fio->StateValue(itf_selected);
 #endif
 #if !defined(SUPPORT_HIRESO)
//	state_fio->StateArray(sound_bios_ram, sizeof(sound_bios_ram), 1);
	state_fio->StateValue(sound_bios_selected);
//	state_fio->StateValue(sound_bios_ram_selected);
 #if defined(SUPPORT_SASI_IF)
	state_fio->StateArray(sasi_bios_ram, sizeof(sasi_bios_ram), 1);
	state_fio->StateValue(sasi_bios_selected);
	state_fio->StateValue(sasi_bios_ram_selected);
	state_fio->StateValue(sasi_bios_load);
 #endif
 #if defined(SUPPORT_SCSI_IF)
	state_fio->StateArray(scsi_bios_ram, sizeof(scsi_bios_ram), 1);
	state_fio->StateValue(scsi_bios_selected);
	state_fio->StateValue(scsi_bios_ram_selected);
 #endif
 #if defined(SUPPORT_IDE_IF)
	state_fio->StateValue(ide_bios_bank);
	state_fio->StateArray(ide_bios_ram, sizeof(ide_bios_ram), 1);
	state_fio->StateValue(ide_bios_selected);
 #endif
 #if defined(SUPPORT_NEC_EMS)
	state_fio->StateArray(nec_ems, sizeof(nec_ems), 1);
	state_fio->StateValue(nec_ems_selected);
 #endif
 #endif
 #if defined(SUPPORT_24BIT_ADDRESS) || defined(SUPPORT_32BIT_ADDRESS)
	state_fio->StateValue(dma_access_ctrl);
	state_fio->StateValue(window_80000h);
	state_fio->StateValue(window_a0000h);
 #endif
	state_fio->StateValue(page08_intram_selected);
	state_fio->StateValue(shadow_ram_selected);
	state_fio->StateValue(last_access_is_interam);
	
	if(!MEMORY::process_state(state_fio, loading)) {
 		return false;
 	}
 	
 	// post process
	if(loading) {
		config_intram();
		update_bios();
#if defined(SUPPORT_24BIT_ADDRESS) || defined(SUPPORT_32BIT_ADDRESS)
		dma_access_a20 = ((dma_access_ctrl & 0x04) != 0) ? false : true;
#endif
	}
 	return true;
}

}
