/***************************************************************************

	systems/pc.c

	PC-XT memory map

	00000-9FFFF   RAM
	A0000-AFFFF   NOP		or videoram EGA/VGA
	B0000-B7FFF   videoram	MDA, page #0
	B8000-BFFFF   videoram	CGA and/or MDA page #1, T1T mapped RAM
	C0000-C7FFF   NOP		or ROM EGA/VGA
	C8000-C9FFF   ROM		XT HDC #1
	CA000-CBFFF   ROM		XT HDC #2
	D0000-EFFFF   NOP		or 'adapter RAM'
	F0000-FDFFF   NOP		or ROM Basic + other Extensions
	FE000-FFFFF   ROM

***************************************************************************/

#include "driver.h"
#include "machine/8255ppi.h"
#include "vidhrdw/generic.h"

#include "includes/uart8250.h"
#include "includes/pic8259.h"
#include "includes/pit8253.h"
#include "includes/mc146818.h"
#include "includes/pc_vga.h"
#include "includes/pc_cga.h"
#include "includes/pc_mda.h"
#include "includes/pc_aga.h"
#include "includes/pc_t1t.h"
#include "includes/pc_video.h"

#include "includes/pc_ide.h"
#include "includes/pc_fdc_h.h"
#include "includes/pckeybrd.h"
#include "includes/pclpt.h"
#include "includes/sblaster.h"
#include "includes/pc_mouse.h"

#include "includes/europc.h"
#include "includes/tandy1t.h"
#include "includes/amstr_pc.h"
#include "includes/ibmpc.h"

#include "includes/pcshare.h"
#include "includes/pc.h"

#include "machine/pc_hdc.h"
#include "devices/printer.h"
#include "devices/mflopimg.h"
#include "devices/harddriv.h"
#include "formats/pc_dsk.h"

#include "machine/8237dma.h"
#include "sound/sn76496.h"
#include "sound/3812intf.h"

#define ym3812_StdClock 3579545

/*
  adlib (YM3812/OPL2 chip), part of many many soundcards (soundblaster)
  soundblaster: YM3812 also accessible at 0x228/9 (address jumperable)
  soundblaster pro version 1: 2 YM3812 chips
   at 0x388 both accessed,
   at 0x220/1 left?, 0x222/3 right? (jumperable)
  soundblaster pro version 2: 1 OPL3 chip

  pro audio spectrum +: 2 OPL2
  pro audio spectrum 16: 1 OPL3
 */
#define ADLIB	/* YM3812/OPL2 Chip */
/*
  creative labs game blaster (CMS creative music system)
  2 x saa1099 chips
  also on sound blaster 1.0
  option on sound blaster 1.5

  jumperable? normally 0x220
*/
#define GAMEBLASTER



/* IO Expansion, only a little bit for ibm bios self tests */
/*#define EXP_ON */

static ADDRESS_MAP_START( pc_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x00000, 0x9ffff) AM_READWRITE(MRA8_BANK10, MWA8_BANK10)
	AM_RANGE(0xa0000, 0xbffff) AM_NOP
	AM_RANGE(0xc0000, 0xc7fff) AM_NOP
	AM_RANGE(0xc8000, 0xcffff) AM_ROM
	AM_RANGE(0xd0000, 0xeffff) AM_NOP
	AM_RANGE(0xf0000, 0xfffff) AM_ROM
ADDRESS_MAP_END



static ADDRESS_MAP_START(pc_io, ADDRESS_SPACE_IO, 8)
	AM_RANGE(0x0000, 0x000f) AM_READWRITE(dma8237_0_r,				dma8237_0_w)
	AM_RANGE(0x0020, 0x0021) AM_READWRITE(pic8259_0_r,				pic8259_0_w)
	AM_RANGE(0x0040, 0x0043) AM_READWRITE(pit8253_0_r,				pit8253_0_w)
	AM_RANGE(0x0060, 0x0063) AM_READWRITE(ppi8255_0_r,				ppi8255_0_w)
	AM_RANGE(0x0080, 0x0087) AM_READWRITE(pc_page_r,				pc_page_w)
	AM_RANGE(0x0200, 0x0207) AM_READWRITE(pc_JOY_r,					pc_JOY_w)
#ifdef EXP_ON
	AM_RANGE(0x0210, 0x0217) AM_READWRITE(pc_EXP_r,					pc_EXP_w)
#endif
	AM_RANGE(0x0240, 0x0257) AM_READWRITE(pc_rtc_r,					pc_rtc_w)
	AM_RANGE(0x0278, 0x027b) AM_READWRITE(pc_parallelport2_r,		pc_parallelport2_w)
	AM_RANGE(0x02e8, 0x02ef) AM_READWRITE(pc_COM4_r,				pc_COM4_w)
	AM_RANGE(0x02f8, 0x02ff) AM_READWRITE(pc_COM2_r,				pc_COM2_w)
	AM_RANGE(0x0320, 0x0323) AM_READWRITE(pc_HDC1_r,				pc_HDC1_w)
	AM_RANGE(0x0324, 0x0327) AM_READWRITE(pc_HDC2_r,				pc_HDC2_w)
	AM_RANGE(0x0340, 0x0357) AM_READ(return8_FF) /* anonymous bios should not recogniced realtimeclock */
	AM_RANGE(0x0378, 0x037f) AM_READWRITE(pc_parallelport1_r,		pc_parallelport1_w)
#ifdef ADLIB
	AM_RANGE(0x0388, 0x0388) AM_READWRITE(YM3812_status_port_0_r,	YM3812_control_port_0_w)
	AM_RANGE(0x0389, 0x0389) AM_WRITE(								YM3812_write_port_0_w)
#endif
	AM_RANGE(0x03bc, 0x03be) AM_READWRITE(pc_parallelport0_r,		pc_parallelport0_w)
	AM_RANGE(0x03e8, 0x03ef) AM_READWRITE(pc_COM3_r,				pc_COM3_w)
	AM_RANGE(0x03f0, 0x03f7) AM_READWRITE(pc_fdc_r,					pc_fdc_w)
	AM_RANGE(0x03f8, 0x03ff) AM_READWRITE(pc_COM1_r,				pc_COM1_w)
ADDRESS_MAP_END



static ADDRESS_MAP_START( europc_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x00000, 0x9ffff) AM_READWRITE(MRA8_BANK10, MWA8_BANK10)
	AM_RANGE(0xa0000, 0xaffff) AM_NOP
	AM_RANGE(0xb0000, 0xbffff) AM_READWRITE(pc_aga_videoram_r, pc_aga_videoram_w) AM_BASE(&videoram) AM_SIZE(&videoram_size)
	AM_RANGE(0xc0000, 0xc7fff) AM_NOP
	AM_RANGE(0xc8000, 0xcffff) AM_ROM
	AM_RANGE(0xd0000, 0xeffff) AM_NOP
	AM_RANGE(0xf0000, 0xfffff) AM_ROM
ADDRESS_MAP_END



static ADDRESS_MAP_START(europc_io, ADDRESS_SPACE_IO, 8)
	AM_RANGE(0x0000, 0x000f) AM_READWRITE(dma8237_0_r,				dma8237_0_w)
	AM_RANGE(0x0020, 0x0021) AM_READWRITE(pic8259_0_r,				pic8259_0_w)
	AM_RANGE(0x0040, 0x0043) AM_READWRITE(pit8253_0_r,				pit8253_0_w)
	AM_RANGE(0x0060, 0x0063) AM_READWRITE(europc_pio_r,				europc_pio_w)
	AM_RANGE(0x0080, 0x0087) AM_READWRITE(pc_page_r,				pc_page_w)
	AM_RANGE(0x0200, 0x0207) AM_READWRITE(pc_JOY_r,					pc_JOY_w)
	AM_RANGE(0x0250, 0x025f) AM_READWRITE(europc_jim_r,				europc_jim_w)
	AM_RANGE(0x0278, 0x027b) AM_READWRITE(pc_parallelport2_r,		pc_parallelport2_w)
	AM_RANGE(0x02e0, 0x02e0) AM_READ     (europc_jim2_r)
	AM_RANGE(0x02e8, 0x02ef) AM_READWRITE(pc_COM4_r,				pc_COM4_w)
	AM_RANGE(0x02f8, 0x02ff) AM_READWRITE(pc_COM2_r,				pc_COM2_w)
	AM_RANGE(0x0320, 0x0323) AM_READWRITE(pc_HDC1_r,				pc_HDC1_w)
	AM_RANGE(0x0324, 0x0327) AM_READWRITE(pc_HDC2_r,				pc_HDC2_w)
	AM_RANGE(0x0378, 0x037b) AM_READWRITE(pc_parallelport1_r,		pc_parallelport1_w)
#ifdef ADLIB
	AM_RANGE(0x0388, 0x0388) AM_READWRITE(YM3812_status_port_0_r,	YM3812_control_port_0_w)
	AM_RANGE(0x0389, 0x0389) AM_WRITE(								YM3812_write_port_0_w)
#endif
/*	AM_RANGE(0x03bc, 0x03be) AM_READWRITE(pc_parallelport0_r,		pc_parallelport0_w) */
	AM_RANGE(0x03e8, 0x03ef) AM_READWRITE(pc_COM3_r,				pc_COM3_w)
	AM_RANGE(0x03f0, 0x03f7) AM_READWRITE(pc_fdc_r,					pc_fdc_w)
	AM_RANGE(0x03f8, 0x03ff) AM_READWRITE(pc_COM1_r,				pc_COM1_w)
ADDRESS_MAP_END



static ADDRESS_MAP_START(tandy1000_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x00000, 0x9ffff) AM_READWRITE(MRA8_BANK10, MWA8_BANK10)
	AM_RANGE(0xa0000, 0xaffff) AM_RAM
	AM_RANGE(0xb0000, 0xb7fff) AM_NOP
	AM_RANGE(0xb8000, 0xbffff) AM_READWRITE(pc_t1t_videoram_r, pc_video_videoram_w)
	AM_RANGE(0xc0000, 0xc7fff) AM_NOP
	AM_RANGE(0xc8000, 0xc9fff) AM_ROM
	AM_RANGE(0xca000, 0xcffff) AM_NOP
	AM_RANGE(0xd0000, 0xeffff) AM_NOP
	AM_RANGE(0xf0000, 0xfffff) AM_ROM
ADDRESS_MAP_END



static ADDRESS_MAP_START(tandy1000_io, ADDRESS_SPACE_IO, 8)
	AM_RANGE(0x0000, 0x000f) AM_READWRITE(dma8237_0_r,				dma8237_0_w)
	AM_RANGE(0x0020, 0x0021) AM_READWRITE(pic8259_0_r,				pic8259_0_w)
	AM_RANGE(0x0040, 0x0043) AM_READWRITE(pit8253_0_r,				pit8253_0_w)
	AM_RANGE(0x0060, 0x0063) AM_READWRITE(tandy1000_pio_r,			tandy1000_pio_w)
	AM_RANGE(0x0080, 0x0087) AM_READWRITE(pc_page_r,				pc_page_w)
	AM_RANGE(0x00c0, 0x00c0) AM_WRITE(								SN76496_0_w)
	AM_RANGE(0x0200, 0x0207) AM_READWRITE(pc_JOY_r,					pc_JOY_w)
	AM_RANGE(0x02f8, 0x02ff) AM_READWRITE(pc_COM2_r,				pc_COM2_w)
	AM_RANGE(0x0320, 0x0323) AM_READWRITE(pc_HDC1_r,				pc_HDC1_w)
	AM_RANGE(0x0324, 0x0327) AM_READWRITE(pc_HDC2_r,				pc_HDC2_w)
	AM_RANGE(0x0378, 0x037f) AM_READWRITE(pc_t1t_p37x_r,			pc_t1t_p37x_w)
	AM_RANGE(0x03bc, 0x03be) AM_READWRITE(pc_parallelport0_r,		pc_parallelport0_w)
	AM_RANGE(0x03d0, 0x03df) AM_READWRITE(pc_T1T_r,					pc_T1T_w)
	AM_RANGE(0x03f0, 0x03f7) AM_READWRITE(pc_fdc_r,					pc_fdc_w)
	AM_RANGE(0x03f8, 0x03ff) AM_READWRITE(pc_COM1_r,				pc_COM1_w)
ADDRESS_MAP_END



static ADDRESS_MAP_START(pc200_io, ADDRESS_SPACE_IO, 8)
	AM_RANGE(0x0000, 0x000f) AM_READWRITE(dma8237_0_r,				dma8237_0_w)
	AM_RANGE(0x0020, 0x0021) AM_READWRITE(pic8259_0_r,				pic8259_0_w)
	AM_RANGE(0x0040, 0x0043) AM_READWRITE(pit8253_0_r,				pit8253_0_w)
	AM_RANGE(0x0060, 0x0065) AM_READWRITE(pc1640_port60_r,			pc1640_port60_w)
	AM_RANGE(0x0078, 0x0078) AM_READWRITE(pc1640_mouse_x_r,			pc1640_mouse_x_w)
	AM_RANGE(0x007a, 0x007a) AM_READWRITE(pc1640_mouse_y_r,			pc1640_mouse_y_w)
	AM_RANGE(0x0080, 0x0087) AM_READWRITE(pc_page_r,				pc_page_w)
	AM_RANGE(0x0200, 0x0207) AM_READWRITE(pc_JOY_r,					pc_JOY_w)
	AM_RANGE(0x0278, 0x027b) AM_READWRITE(pc_parallelport2_r,		pc_parallelport2_w)
	AM_RANGE(0x02e8, 0x02ef) AM_READWRITE(pc_COM4_r,				pc_COM4_w)
	AM_RANGE(0x02f8, 0x02ff) AM_READWRITE(pc_COM2_r,				pc_COM2_w)
	AM_RANGE(0x0320, 0x0323) AM_READWRITE(pc_HDC1_r,				pc_HDC1_w)
	AM_RANGE(0x0324, 0x0327) AM_READWRITE(pc_HDC2_r,				pc_HDC2_w)
	AM_RANGE(0x0378, 0x037b) AM_READWRITE(pc200_port378_r,			pc_parallelport1_w)
	AM_RANGE(0x03bc, 0x03be) AM_READWRITE(pc_parallelport0_r,		pc_parallelport0_w)
	AM_RANGE(0x03e8, 0x03ef) AM_READWRITE(pc_COM3_r,				pc_COM3_w)
	AM_RANGE(0x03f0, 0x03f7) AM_READWRITE(pc_fdc_r,					pc_fdc_w)
	AM_RANGE(0x03f8, 0x03ff) AM_READWRITE(pc_COM1_r,				pc_COM1_w)
ADDRESS_MAP_END



static ADDRESS_MAP_START( pc1640_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x00000, 0x9ffff) AM_READWRITE(MRA8_BANK10, MWA8_BANK10)
	AM_RANGE(0xa0000, 0xbffff) AM_NOP
	AM_RANGE(0xc0000, 0xc7fff) AM_ROM
	AM_RANGE(0xc8000, 0xcffff) AM_ROM
	AM_RANGE(0xd0000, 0xfbfff) AM_NOP
	AM_RANGE(0xfc000, 0xfffff) AM_ROM
ADDRESS_MAP_END


static ADDRESS_MAP_START(pc1640_io, ADDRESS_SPACE_IO, 8)
	AM_RANGE(0x0000, 0x000f) AM_READWRITE(dma8237_0_r,				dma8237_0_w)
	AM_RANGE(0x0020, 0x0021) AM_READWRITE(pic8259_0_r,				pic8259_0_w)
	AM_RANGE(0x0040, 0x0043) AM_READWRITE(pit8253_0_r,				pit8253_0_w)
	AM_RANGE(0x0060, 0x0065) AM_READWRITE(pc1640_port60_r,			pc1640_port60_w)
	AM_RANGE(0x0070, 0x0071) AM_READWRITE(mc146818_port_r,			mc146818_port_w)
	AM_RANGE(0x0078, 0x0078) AM_READWRITE(pc1640_mouse_x_r,			pc1640_mouse_x_w)
	AM_RANGE(0x007a, 0x007a) AM_READWRITE(pc1640_mouse_y_r,			pc1640_mouse_y_w)
	AM_RANGE(0x0080, 0x0087) AM_READWRITE(pc_page_r,				pc_page_w)
	AM_RANGE(0x0200, 0x0207) AM_READWRITE(pc_JOY_r,					pc_JOY_w)
	AM_RANGE(0x0278, 0x027b) AM_READWRITE(pc_parallelport2_r,		pc_parallelport2_w)
	AM_RANGE(0x02e8, 0x02ef) AM_READWRITE(pc_COM4_r,				pc_COM4_w)
	AM_RANGE(0x02f8, 0x02ff) AM_READWRITE(pc_COM2_r,				pc_COM2_w)
	AM_RANGE(0x0320, 0x0323) AM_READWRITE(pc_HDC1_r,				pc_HDC1_w)
	AM_RANGE(0x0324, 0x0327) AM_READWRITE(pc_HDC2_r,				pc_HDC2_w)
	AM_RANGE(0x0378, 0x037b) AM_READWRITE(pc1640_port378_r,			pc_parallelport1_w)
	AM_RANGE(0x03bc, 0x03be) AM_READWRITE(pc_parallelport0_r,		pc_parallelport0_w)
	AM_RANGE(0x03e8, 0x03ef) AM_READWRITE(pc_COM3_r,				pc_COM3_w)
	AM_RANGE(0x03f0, 0x03f7) AM_READWRITE(pc_fdc_r,					pc_fdc_w)
	AM_RANGE(0x03f8, 0x03ff) AM_READWRITE(pc_COM1_r,				pc_COM1_w)
ADDRESS_MAP_END



INPUT_PORTS_START( pcmda )
	PORT_START /* IN0 */
	PORT_BIT ( 0x80, 0x80,	 IPT_VBLANK )
	PORT_BIT ( 0x7f, 0x7f,	 IPT_UNUSED )

	PORT_START /* IN1 */
	PORT_DIPNAME( 0xc0, 0x40, "Number of floppy drives")
	PORT_DIPSETTING(	0x00, "1" )
	PORT_DIPSETTING(	0x40, "2" )
	PORT_DIPSETTING(	0x80, "3" )
	PORT_DIPSETTING(	0xc0, "4" )
	PORT_DIPNAME( 0x30, 0x30, "Graphics adapter")
	PORT_DIPSETTING(	0x00, "EGA/VGA" )
	PORT_DIPSETTING(	0x10, "Color 40x25" )
	PORT_DIPSETTING(	0x20, "Color 80x25" )
	PORT_DIPSETTING(	0x30, "Monochrome" )
	PORT_DIPNAME( 0x0c, 0x0c, "RAM banks")
	PORT_DIPSETTING(	0x00, "1 - 16/ 64/256K" )
	PORT_DIPSETTING(	0x04, "2 - 32/128/512K" )
	PORT_DIPSETTING(	0x08, "3 - 48/192/576K" )
	PORT_DIPSETTING(	0x0c, "4 - 64/256/640K" )
	PORT_DIPNAME( 0x02, 0x00, "80387 installed")
	PORT_DIPSETTING(	0x00, DEF_STR(No) )
	PORT_DIPSETTING(	0x02, DEF_STR(Yes) )
	PORT_DIPNAME( 0x01, 0x01, "Any floppy drive installed")
	PORT_DIPSETTING(	0x00, DEF_STR(No) )
	PORT_DIPSETTING(	0x01, DEF_STR(Yes) )

    PORT_START /* IN2 */
	PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR(No) )
	PORT_DIPSETTING(	0x80, DEF_STR(Yes) )
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR(No) )
	PORT_DIPSETTING(	0x40, DEF_STR(Yes) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR(No) )
	PORT_DIPSETTING(	0x20, DEF_STR(Yes) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x00, "LPT2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x01, DEF_STR( Yes ) )

	PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x80, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_BIT( 0x02, 0x02,	IPT_UNUSED ) /* no turbo switch */
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( at_keyboard )		/* IN4 - IN11 */
	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */
INPUT_PORTS_END

INPUT_PORTS_START( pccga )
	PORT_START /* IN0 */
	PORT_BIT ( 0xf0, 0xf0,	 IPT_UNUSED )
	PORT_BIT ( 0x08, 0x08,	 IPT_VBLANK )
	PORT_BIT ( 0x07, 0x07,	 IPT_UNUSED )

    PORT_START /* IN1 */
	PORT_DIPNAME( 0xc0, 0x40, "Number of floppy drives")
	PORT_DIPSETTING(	0x00, "1" )
	PORT_DIPSETTING(	0x40, "2" )
	PORT_DIPSETTING(	0x80, "3" )
	PORT_DIPSETTING(	0xc0, "4" )
	PORT_DIPNAME( 0x30, 0x20, "Graphics adapter")
	PORT_DIPSETTING(	0x00, "EGA/VGA" )
	PORT_DIPSETTING(	0x10, "Color 40x25" )
	PORT_DIPSETTING(	0x20, "Color 80x25" )
	PORT_DIPSETTING(	0x30, "Monochrome" )
	PORT_DIPNAME( 0x0c, 0x0c, "RAM banks")
	PORT_DIPSETTING(	0x00, "1 - 16  64 256K" )
	PORT_DIPSETTING(	0x04, "2 - 32 128 512K" )
	PORT_DIPSETTING(	0x08, "3 - 48 192 576K" )
	PORT_DIPSETTING(	0x0c, "4 - 64 256 640K" )
	PORT_DIPNAME( 0x02, 0x00, "80387 installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x01, "Floppy installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x01, DEF_STR( Yes ) )
	PORT_START /* IN2 */
	PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x80, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x00, "LPT2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x80, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_BIT( 0x02, 0x02,	IPT_UNUSED ) /* no turbo switch */
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( pc_keyboard )		/* IN4 - IN11 */
	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */

    PORT_START /* IN20 */
	PORT_CONFNAME( 0x03, 0x00, "CGA character set")
	PORT_CONFSETTING(0x00, DEF_STR( Normal ))
    PORT_CONFSETTING(0x01, "Alternative")
	PORT_CONFNAME( 0x1C, 0x00, "CGA monitor type")
	PORT_CONFSETTING(0x00, "Colour RGB")
	PORT_CONFSETTING(0x04, "Mono RGB")
	PORT_CONFSETTING(0x08, "Colour composite")
	PORT_CONFSETTING(0x0C, "Television")
    PORT_CONFSETTING(0x10, "LCD")
	PORT_CONFNAME( 0xE0, 0x00, "CGA chipset")
	PORT_CONFSETTING(0x00, "IBM")
	PORT_CONFSETTING(0x20, "Amstrad PC1512")
	PORT_CONFSETTING(0x40, "Amstrad PPC512")
	PORT_CONFSETTING(0x60, "ATI")
    PORT_CONFSETTING(0x80, "Paradise")
INPUT_PORTS_END

INPUT_PORTS_START( europc )
	PORT_START /* IN0 */
	PORT_BIT ( 0xf0, 0xf0,	 IPT_UNUSED )
	PORT_BIT ( 0x08, 0x08,	 IPT_VBLANK )
	PORT_BIT ( 0x07, 0x07,	 IPT_UNUSED )

    PORT_START /* IN1 */

	PORT_START /* IN2 */
	PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x80, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x00, "LPT2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x80, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_BIT( 0x02, 0x02,	IPT_UNUSED ) /* no turbo switch */
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	EUROPC_KEYBOARD

	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */
INPUT_PORTS_END

INPUT_PORTS_START( bondwell )
	PORT_START /* IN0 */
	PORT_BIT ( 0xf0, 0xf0,	 IPT_UNUSED )
	PORT_BIT ( 0x08, 0x08,	 IPT_VBLANK )
	PORT_BIT ( 0x07, 0x07,	 IPT_UNUSED )

    PORT_START /* IN1 */
	PORT_DIPNAME( 0xc0, 0x40, "Number of floppy drives")
	PORT_DIPSETTING(	0x00, "1" )
	PORT_DIPSETTING(	0x40, "2" )
	PORT_DIPSETTING(	0x80, "3" )
	PORT_DIPSETTING(	0xc0, "4" )
	PORT_DIPNAME( 0x30, 0x20, "Graphics adapter")
	PORT_DIPSETTING(	0x00, "EGA/VGA" )
	PORT_DIPSETTING(	0x10, "Color 40x25" )
	PORT_DIPSETTING(	0x20, "Color 80x25" )
	PORT_DIPSETTING(	0x30, "Monochrome" )
	PORT_DIPNAME( 0x0c, 0x0c, "RAM banks")
	PORT_DIPSETTING(	0x00, "1 - 16  64 256K" )
	PORT_DIPSETTING(	0x04, "2 - 32 128 512K" )
	PORT_DIPSETTING(	0x08, "3 - 48 192 576K" )
	PORT_DIPSETTING(	0x0c, "4 - 64 256 640K" )
	PORT_DIPNAME( 0x02, 0x00, "80387 installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x01, "Floppy installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x01, DEF_STR( Yes ) )
	PORT_START /* IN2 */
	PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x80, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x00, "LPT2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x80, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x02, "Turbo Switch" )
	PORT_DIPSETTING(	0x00, "Off (4.77 MHz)" )
	PORT_DIPSETTING(	0x02, "On (12 MHz)" )
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( at_keyboard )		/* IN4 - IN11 */
	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */
INPUT_PORTS_END

INPUT_PORTS_START( xtcga )
	PORT_START /* IN0 */
	PORT_BIT ( 0xf0, 0xf0,	 IPT_UNUSED )
	PORT_BIT ( 0x08, 0x08,	 IPT_VBLANK )
	PORT_BIT ( 0x07, 0x07,	 IPT_UNUSED )

    PORT_START /* IN1 */
	PORT_DIPNAME( 0xc0, 0x40, "Number of floppy drives")
	PORT_DIPSETTING(	0x00, "1" )
	PORT_DIPSETTING(	0x40, "2" )
	PORT_DIPSETTING(	0x80, "3" )
	PORT_DIPSETTING(	0xc0, "4" )
	PORT_DIPNAME( 0x30, 0x20, "Graphics adapter")
	PORT_DIPSETTING(	0x00, "EGA/VGA" )
	PORT_DIPSETTING(	0x10, "Color 40x25" )
	PORT_DIPSETTING(	0x20, "Color 80x25" )
	PORT_DIPSETTING(	0x30, "Monochrome" )
	PORT_DIPNAME( 0x0c, 0x0c, "RAM banks")
	PORT_DIPSETTING(	0x00, "1 - 16  64 256K" )
	PORT_DIPSETTING(	0x04, "2 - 32 128 512K" )
	PORT_DIPSETTING(	0x08, "3 - 48 192 576K" )
	PORT_DIPSETTING(	0x0c, "4 - 64 256 640K" )
	PORT_DIPNAME( 0x02, 0x00, "80387 installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x01, "Floppy installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x01, DEF_STR( Yes ) )
	PORT_START /* IN2 */
	PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x80, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x00, "LPT2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x80, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x02, "Turbo Switch" )
	PORT_DIPSETTING(	0x00, "Off (4.77 MHz)" )
	PORT_DIPSETTING(	0x02, "On (12 MHz)" )
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( pc_keyboard )		/* IN4 - IN11 */
	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */

    PORT_START /* IN20 */
	PORT_CONFNAME( 0x03, 0x00, "CGA character set")
	PORT_CONFSETTING(0x00, DEF_STR( Normal ))
    PORT_CONFSETTING(0x01, "Alternative")
	PORT_CONFNAME( 0x1C, 0x00, "CGA monitor type")
	PORT_CONFSETTING(0x00, "Colour RGB")
	PORT_CONFSETTING(0x04, "Mono RGB")
	PORT_CONFSETTING(0x08, "Colour composite")
	PORT_CONFSETTING(0x0C, "Television")
    PORT_CONFSETTING(0x10, "LCD")
	PORT_CONFNAME( 0xE0, 0x00, "CGA chipset")
	PORT_CONFSETTING(0x00, "IBM")
	PORT_CONFSETTING(0x20, "Amstrad PC1512")
	PORT_CONFSETTING(0x40, "Amstrad PPC512")
	PORT_CONFSETTING(0x60, "ATI")
    PORT_CONFSETTING(0x80, "Paradise")
INPUT_PORTS_END

INPUT_PORTS_START( tandy1t )
	PORT_START /* IN0 */
	PORT_BIT ( 0xf0, 0xf0,	 IPT_UNUSED )
	PORT_BIT ( 0x08, 0x08,	 IPT_VBLANK )
	PORT_BIT ( 0x07, 0x07,	 IPT_UNUSED )

    PORT_START /* IN1 */
	PORT_BIT ( 0xff, 0xff,	 IPT_UNUSED )

    PORT_START /* IN2 */
	PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x80, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_BIT ( 0x30, 0x00,	 IPT_UNUSED )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_BIT ( 0x06, 0x00,	 IPT_UNUSED )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x80, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_BIT( 0x02, 0x02,	IPT_UNUSED ) /* no turbo switch */
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( t1000_keyboard )
	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */
INPUT_PORTS_END

INPUT_PORTS_START( pc200 )
	PORT_START /* IN0 */
	PORT_BIT ( 0xf0, 0xf0,	 IPT_UNUSED )
	PORT_BIT ( 0x08, 0x08,	 IPT_VBLANK )
	PORT_BIT ( 0x07, 0x07,	 IPT_UNUSED )

    PORT_START /* IN1 */
	PORT_DIPNAME( 0x07, 0x07, "Name/Language")
	PORT_DIPSETTING(	0x00, "English/less checks" )
	PORT_DIPSETTING(	0x01, DEF_STR( Italian ) ) /*prego attendere */
	PORT_DIPSETTING(	0x02, "V.g. vänta" )
	PORT_DIPSETTING(	0x03, "Vent et cjeblik" ) /* seldom c */
	PORT_DIPSETTING(	0x04, DEF_STR( Spanish ) ) /*Por favor */
	PORT_DIPSETTING(	0x05, DEF_STR( French ) ) /*patientez */
	PORT_DIPSETTING(	0x06, DEF_STR( German ) ) /* bitte warten */
	PORT_DIPSETTING(	0x07, DEF_STR( English ) ) /* please wait */
	PORT_DIPNAME( 0x08, 0x00, "37a 0x40")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x08, "0x08" )
	PORT_DIPNAME( 0x10, 0x00, "37a 0x80")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x10, "0x10" )
	PORT_DIPNAME( 0x30, 0x00, "Integrated Graphics Adapter")
	PORT_DIPSETTING(	0x00, "CGA 1" )
	PORT_DIPSETTING(	0x10, "CGA 2" )
	PORT_DIPSETTING(	0x20, "external" )
	PORT_DIPSETTING(	0x30, "MDA" )
	PORT_DIPNAME( 0xc0, 0x80, "Startup Mode")
	PORT_DIPSETTING(	0x00, "external Color 80 Columns" )
	PORT_DIPSETTING(	0x40, "Color 40 Columns" )
	PORT_DIPSETTING(	0x80, "Color 80 Columns" )
	PORT_DIPSETTING(	0xc0, DEF_STR( Mono ) )
	PORT_START /* IN2 */
PORT_BIT ( 0x80, 0x80,	 IPT_UNUSED ) /* com 1 on motherboard */
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
PORT_BIT ( 0x04, 0x04,	 IPT_UNUSED ) /* lpt 1 on motherboard */
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x00, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_BIT( 0x02, 0x02,	IPT_UNUSED ) /* no turbo switch */
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( at_keyboard )		/* IN4 - IN11 */
	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */

    PORT_START /* IN20 */
	PORT_CONFNAME( 0x03, 0x03, "IDA character set")
	PORT_CONFSETTING(0x00, "Greek")
	PORT_CONFSETTING(0x01, "Norwegian (Codepage 860)")
	PORT_CONFSETTING(0x02, "Portugese (Codepage 865)")
    PORT_CONFSETTING(0x03, "Default (Codepage 437)")
	PORT_CONFNAME( 0x1C, 0x00, "CGA monitor type")
	PORT_CONFSETTING(0x00, "Colour RGB")
	PORT_CONFSETTING(0x04, "Mono RGB")
    PORT_CONFSETTING(0x0C, "Television")
    PORT_BIT ( 0xE0, 0x40, IPT_UNUSED )	/* Chipset is always PPC512 */

INPUT_PORTS_END

INPUT_PORTS_START( pc1512 )
	PORT_START /* IN0 */
	PORT_BIT ( 0xf0, 0xf0,	 IPT_UNUSED )
	PORT_BIT ( 0x08, 0x08,	 IPT_VBLANK )
	PORT_BIT ( 0x07, 0x07,	 IPT_UNUSED )

    PORT_START /* IN1 */
	PORT_DIPNAME( 0x07, 0x07, "Name/Language")
	PORT_DIPSETTING(	0x00, "English/less checks" )
	PORT_DIPSETTING(	0x01, DEF_STR( Italian ) ) /*prego attendere */
	PORT_DIPSETTING(	0x02, "V.g. vänta" )
	PORT_DIPSETTING(	0x03, "Vent et cjeblik" ) /* seldom c */
	PORT_DIPSETTING(	0x04, DEF_STR( Spanish ) ) /*Por favor */
	PORT_DIPSETTING(	0x05, DEF_STR( French ) ) /*patientez */
	PORT_DIPSETTING(	0x06, DEF_STR( German ) ) /* bitte warten */
	PORT_DIPSETTING(	0x07, DEF_STR( English ) ) /* please wait */
	PORT_BIT( 0x20, 0x20,	IPT_UNUSED ) /* pc1512 integrated special cga */
	PORT_BIT( 0xc0, 0x00,	IPT_UNUSED ) /* not used in pc1512 */
	PORT_BIT( 0xe00, 0x00,	IPT_UNUSED ) /* not used in pc1512 */
	PORT_BIT( 0xe000, 0x00,	IPT_UNUSED ) /* not used in pc1512 */
	PORT_START /* IN2 */
PORT_BIT ( 0x80, 0x80,	 IPT_UNUSED ) /* com 1 on motherboard */
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
PORT_BIT ( 0x04, 0x04,	 IPT_UNUSED ) /* lpt 1 on motherboard */
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x00, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_BIT( 0x02, 0x02,	IPT_UNUSED ) /* no turbo switch */
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( amstrad_keyboard )	/* IN4 - IN14 */

	PORT_INCLUDE( pc_joystick_none )

    PORT_START /* IN20 */
	PORT_CONFNAME( 0x03, 0x03, "CGA character set")
	PORT_CONFSETTING(0x00, "Greek")
	PORT_CONFSETTING(0x01, "Danish 2")
	PORT_CONFSETTING(0x02, "Danish 1")
    PORT_CONFSETTING(0x03, "Default")
	PORT_CONFNAME( 0x1C, 0x00, "CGA monitor type")
	PORT_CONFSETTING(0x00, "Colour RGB")
    PORT_CONFSETTING(0x04, "Mono RGB")
    PORT_BIT ( 0xE0, 0x20, IPT_UNUSED )	/* Chipset is always PC1512 */
INPUT_PORTS_END

INPUT_PORTS_START( pc1640 )
	PORT_START	/* IN0 */
	PORT_DIPNAME( 0x08, 0x08, "VGA 1")
	PORT_DIPSETTING(	0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x00, "VGA 2")
	PORT_DIPSETTING(	0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x00, "VGA 3")
	PORT_DIPSETTING(	0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x01, 0x01, "VGA 4")
	PORT_DIPSETTING(	0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Paradise EGA 5")
	PORT_DIPSETTING(	0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Paradise EGA 6")
	PORT_DIPSETTING(	0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Paradise EGA 7")
	PORT_DIPSETTING(	0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Paradise EGA 8")
	PORT_DIPSETTING(	0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )

    PORT_START /* IN1 */
	PORT_DIPNAME( 0x07, 0x07, "Name/Language")
	PORT_DIPNAME( 0x07, 0x07, "Name/Language")
/*	PORT_DIPSETTING(	0x00, "PC 512k" ) // machine crashes with ega bios at 0xc0000 */
	PORT_DIPSETTING(	0x01, DEF_STR( Italian ) ) /*prego attendere */
	PORT_DIPSETTING(	0x02, "V.g. vänta" )
	PORT_DIPSETTING(	0x03, "Vent et cjeblik" ) /* seldom c */
	PORT_DIPSETTING(	0x04, DEF_STR( Spanish ) ) /*Por favor */
	PORT_DIPSETTING(	0x05, DEF_STR( French ) ) /*patientez */
	PORT_DIPSETTING(	0x06, DEF_STR( German ) ) /* bitte warten */
	PORT_DIPSETTING(	0x07, DEF_STR( English ) ) /* please wait */
	PORT_BIT( 0x20, 0x00,	IPT_UNUSED ) /* not pc1512 integrated special cga */
	PORT_DIPNAME( 0x40, 0x00, "37a 0x40")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x40, "0x40" )
	PORT_DIPNAME( 0x80, 0x00, "37a 0x80")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x80, "0x80" )
#if 0
	PORT_DIPNAME( 0x200, 0x00, "37a 0x20 after 27[8a] read (font?)")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x200, "0x20" )
	PORT_DIPNAME( 0x400, 0x00, "37a 0x40 after 27[8a] read (font?)")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x400, "0x40" )
	PORT_DIPNAME( 0x800, 0x00, "37a 0x80 after 27[8a] read (font?)")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x800, "0x80" )
	PORT_DIPNAME( 0x2000, 0x00, "37a 0x20 after 427a read")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x2000, "0x20" )
	PORT_DIPNAME( 0x4000, 0x00, " 37a 0x40 after 427a read")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x4000, "0x40" )
	PORT_DIPNAME( 0x8000, 0x00, " 37a 0x80 after 427a read")
	PORT_DIPSETTING(	0x00, "0x00" )
	PORT_DIPSETTING(	0x8000, "0x80" )
#else
	PORT_DIPNAME( 0xe00, 0x600, "37a after 427a read")
	PORT_DIPSETTING(	0x000, "?0standard" ) /* diaresis a, seldom c, acut u, circumflex e, grave a, acute e */
	PORT_DIPSETTING(	0x200, "?scandinavian" ) /*diaresis a, o slashed, acute u, circumflex e, grave a, acute e */
	PORT_DIPSETTING(	0x600, "?spain" ) /* tilde a, seldom c, acute u, circumflex e, grave a, acute e */
	PORT_DIPSETTING(	0xa00, "?greeck" ) /* E, circumflex ???,micro, I, Z, big kappa? */
	PORT_DIPSETTING(	0xe00, "?standard" ) /* diaresis a, seldom e, acute u, circumflex e, grave a, acute e */
	PORT_DIPNAME( 0xe000, 0x00, "37a after 427a read")
	PORT_DIPSETTING(	0x0000, "?Integrated Graphic Adapter IGA (EGA)" )
	PORT_DIPSETTING(	0x2000, "?External EGA/VGA" )
	PORT_DIPSETTING(	0x6000, "CGA 40 Columns" )
	PORT_DIPSETTING(	0xa000, "CGA 80 Columns" )
	PORT_DIPSETTING(	0xe000, "MDA/Hercules/Multiple Graphic Adapters" )
#endif
	PORT_START /* IN2 */
PORT_BIT ( 0x80, 0x80,	 IPT_UNUSED ) /* com 1 on motherboard */
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
PORT_BIT ( 0x04, 0x04,	 IPT_UNUSED ) /* lpt 1 on motherboard */
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x00, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_BIT( 0x02, 0x02,	IPT_UNUSED ) /* no turbo switch */
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( amstrad_keyboard )	/* IN4 - IN14 */

/*	PORT_INCLUDE( pc_mouse_microsoft )	   IN12 - IN14    */

INPUT_PORTS_END

INPUT_PORTS_START( xtvga )
	PORT_START /* IN0 */
	PORT_DIPNAME( 0x08, 0x08, "VGA 1")
	PORT_DIPSETTING(	0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "VGA 2")
	PORT_DIPSETTING(	0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "VGA 3")
	PORT_DIPSETTING(	0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x01, 0x00, "VGA 4")
	PORT_DIPSETTING(	0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )

    PORT_START /* IN1 */
	PORT_DIPNAME( 0xc0, 0x40, "Number of floppy drives")
	PORT_DIPSETTING(	0x00, "1" )
	PORT_DIPSETTING(	0x40, "2" )
	PORT_DIPSETTING(	0x80, "3" )
	PORT_DIPSETTING(	0xc0, "4" )
	PORT_DIPNAME( 0x30, 0x00, "Graphics adapter")
	PORT_DIPSETTING(	0x00, "EGA/VGA" )
	PORT_DIPSETTING(	0x10, "Color 40x25" )
	PORT_DIPSETTING(	0x20, "Color 80x25" )
	PORT_DIPSETTING(	0x30, "Monochrome" )
	PORT_DIPNAME( 0x0c, 0x0c, "RAM banks")
	PORT_DIPSETTING(	0x00, "1 - 16  64 256K" )
	PORT_DIPSETTING(	0x04, "2 - 32 128 512K" )
	PORT_DIPSETTING(	0x08, "3 - 48 192 576K" )
	PORT_DIPSETTING(	0x0c, "4 - 64 256 640K" )
	PORT_DIPNAME( 0x02, 0x00, "80387 installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x01, "Floppy installed")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x01, DEF_STR( Yes ) )
	PORT_START /* IN2 */
	PORT_DIPNAME( 0x80, 0x80, "COM1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x80, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x40, 0x40, "COM2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x00, "COM3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x10, 0x00, "COM4: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, "LPT1: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x00, "LPT2: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x00, "LPT3: enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x01, 0x00, "Game port enable")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
    PORT_DIPSETTING(    0x01, DEF_STR( Yes ) )

    PORT_START /* IN3 */
	PORT_DIPNAME( 0xf0, 0x80, "Serial mouse")
	PORT_DIPSETTING(	0x80, "COM1" )
	PORT_DIPSETTING(	0x40, "COM2" )
	PORT_DIPSETTING(	0x20, "COM3" )
	PORT_DIPSETTING(	0x10, "COM4" )
    PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x08, "HDC1 (C800:0 port 320-323)")
	PORT_DIPSETTING(	0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, "HDC2 (CA00:0 port 324-327)")
    PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x02, 0x02, "Turbo Switch" )
	PORT_DIPSETTING(	0x00, "Off (4.77 MHz)" )
	PORT_DIPSETTING(	0x02, "On (12 MHz)" )
	PORT_BIT( 0x01, 0x01,	IPT_UNUSED )

	PORT_INCLUDE( at_keyboard )		/* IN4 - IN11 */
	PORT_INCLUDE( pc_mouse_microsoft )	/* IN12 - IN14 */
	PORT_INCLUDE( pc_joystick )			/* IN15 - IN19 */
INPUT_PORTS_END

static unsigned i86_address_mask = 0x000fffff;

#if defined(ADLIB)
/* irq line not connected to pc on adlib cards (and compatibles) */
static void pc_irqhandler(int linestate) {}

static struct YM3812interface ym3812_interface =
{
	pc_irqhandler
};
#endif

#define MDRV_CPU_PC(mem, port, type, clock, vblankfunc)	\
	MDRV_CPU_ADD_TAG("main", type, clock)				\
	MDRV_CPU_PROGRAM_MAP(mem##_map, mem##_map)			\
	MDRV_CPU_IO_MAP(port##_io, port##_io)				\
	MDRV_CPU_VBLANK_INT(vblankfunc, 4)					\
	MDRV_CPU_CONFIG(i86_address_mask)


static MACHINE_DRIVER_START( pcmda )
	/* basic machine hardware */
	MDRV_CPU_PC(pc, pc, V20, 4772720, pc_mda_frame_interrupt)	/* 4,77 Mhz */

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_mda)

	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(80*9, 25*14)
	MDRV_VISIBLE_AREA(0,80*9-1, 0,25*14-1)
	MDRV_GFXDECODE(pc_mda_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(sizeof(cga_palette) / sizeof(cga_palette[0]))
	MDRV_COLORTABLE_LENGTH(sizeof(mda_colortable) / sizeof(mda_colortable[0]))
	MDRV_PALETTE_INIT(pc_mda)

	MDRV_VIDEO_START(pc_mda)
	MDRV_VIDEO_UPDATE(pc_video)

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#ifdef ADLIB
	MDRV_SOUND_ADD(YM3812, ym3812_StdClock)
	MDRV_SOUND_CONFIG(ym3812_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#endif
#ifdef GAMEBLASTER
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
#endif
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( pccga )
	/* basic machine hardware */
	MDRV_CPU_PC(pc, pc, I88, 4772720, pc_cga_frame_interrupt)	/* 4,77 Mhz */

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_cga)

	MDRV_IMPORT_FROM( pcvideo_cga )

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#ifdef ADLIB
	MDRV_SOUND_ADD(YM3812, ym3812_StdClock)
	MDRV_SOUND_CONFIG(ym3812_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#endif
#ifdef GAMEBLASTER
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
#endif
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( europc )
	/* basic machine hardware */
	MDRV_CPU_PC(europc, europc, I88, 4772720*2, pc_aga_frame_interrupt)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_aga)

	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(80*9, 25*14)
	MDRV_VISIBLE_AREA(0,80*9-1, 0,25*14-1)
	MDRV_GFXDECODE(europc_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(sizeof(cga_palette) / sizeof(cga_palette[0]))
	MDRV_COLORTABLE_LENGTH((sizeof(cga_colortable)+sizeof(mda_colortable) )/sizeof(cga_colortable[0]))
	MDRV_PALETTE_INIT(pc_aga)

	MDRV_VIDEO_START(pc_aga)
	MDRV_VIDEO_UPDATE(pc_video)

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#ifdef ADLIB
	MDRV_SOUND_ADD(YM3812, ym3812_StdClock)
	MDRV_SOUND_CONFIG(ym3812_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#endif

	MDRV_NVRAM_HANDLER( europc_rtc )
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( xtcga )
	/* basic machine hardware */
	MDRV_CPU_PC(pc, pc, I86, 12000000, pc_cga_frame_interrupt)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_cga)

	MDRV_IMPORT_FROM( pcvideo_cga )

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#ifdef ADLIB
	MDRV_SOUND_ADD(YM3812, ym3812_StdClock)
	MDRV_SOUND_CONFIG(ym3812_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#endif
#ifdef GAMEBLASTER
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
#endif
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( pc200 )
	/* basic machine hardware */
	MDRV_CPU_PC(pc1640, pc200, I86, 8000000, pc_aga_frame_interrupt)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_aga)

	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(80*8, 25*14)
	MDRV_VISIBLE_AREA(0,80*8-1, 0,25*14-1)
	MDRV_GFXDECODE(aga_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(sizeof(cga_palette) / sizeof(cga_palette[0]))
	MDRV_COLORTABLE_LENGTH((sizeof(cga_colortable)+sizeof(mda_colortable) )/sizeof(cga_colortable[0]))
	MDRV_PALETTE_INIT(pc_aga)

	MDRV_VIDEO_START(pc200)	/* PC200 needs its own video init */
	MDRV_VIDEO_UPDATE(pc_video)

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( pc1512 )
	/* basic machine hardware */
	MDRV_CPU_PC(pc1640, pc1640, I86, 8000000, pc_cga_frame_interrupt)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_aga)

	MDRV_IMPORT_FROM( pcvideo_pc1512 )

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	MDRV_NVRAM_HANDLER( mc146818 )
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( pc1640 )
	/* basic machine hardware */
	MDRV_CPU_PC(pc1640, pc1640, I86, 8000000, pc_vga_frame_interrupt)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_vga)

	MDRV_IMPORT_FROM(pcvideo_pc1640)

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	MDRV_NVRAM_HANDLER( mc146818 )
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( xtvga )
	/* basic machine hardware */
	MDRV_CPU_PC(pc, pc, I86, 12000000, pc_vga_frame_interrupt)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_vga)

	MDRV_IMPORT_FROM( pcvideo_vga )

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#ifdef ADLIB
	MDRV_SOUND_ADD(YM3812, ym3812_StdClock)
	MDRV_SOUND_CONFIG(ym3812_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
#endif
#ifdef GAMEBLASTER
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
	MDRV_SOUND_ADD(SAA1099, 0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
#endif
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( t1000hx )
	/* basic machine hardware */
	MDRV_CPU_PC(tandy1000, tandy1000, I88, 8000000, tandy1000_frame_interrupt)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_REAL_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_INIT(pc_t1t)

	MDRV_IMPORT_FROM( pcvideo_t1000hx )

    /* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD(CUSTOM, 0)
	MDRV_SOUND_CONFIG(pc_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
	MDRV_SOUND_ADD(SN76496, 2386360)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)

	MDRV_NVRAM_HANDLER( tandy1000 )
MACHINE_DRIVER_END

static MACHINE_DRIVER_START( t1000sx )
	MDRV_IMPORT_FROM( t1000hx )
	MDRV_IMPORT_FROM( pcvideo_t1000sx )
MACHINE_DRIVER_END

#if 0
	/*pcjr roms? (incomplete dump, most likely 64 kbyte) */
	/* basic c1.20  */
    ROM_LOAD("basic.rom", 0xf6000, 0x8000, CRC(0c19c1a8))
	/* ??? */
    ROM_LOAD("bios.rom", 0x??000, 0x2000, CRC(98463f95))

	/* turbo xt */
	/* basic c1.10 */
    ROM_LOAD("rom05.bin", 0xf6000, 0x2000, CRC(80d3cf5d))
    ROM_LOAD("rom04.bin", 0xf8000, 0x2000, CRC(673a4acc))
    ROM_LOAD("rom03.bin", 0xfa000, 0x2000, CRC(aac3fc37))
    ROM_LOAD("rom02.bin", 0xfc000, 0x2000, CRC(3062b3fc))
	/* sw1 0x60 readback fails write 301 to screen fe3b7 */
	/* disk problems no disk gives 601 */
	/* 5000-026 08/16/82 */
    ROM_LOAD("rom01.bin", 0xfe000, 0x2000, CRC(5c3f0256))

	/* anonymous works nice */
    ROM_LOAD("pcxt.rom",    0xfe000, 0x02000, CRC(031aafad))

	ROM_LOAD("bondwell.bin", 0xfe000, 0x2000, CRC(d435a405))

	/* europc */
    ROM_LOAD("50145", 0xf8000, 0x8000, CRC(1775a11d)) /* V2.07 */
/*    ROM_LOAD("eurobios.bin", 0xf8000, 0x8000, CRC(52185223)) scrap */
	/* cga, hercules character set */
    ROM_LOAD("50146", 0x00000, 0x02000, CRC(1305dcf5)) /*D1.0 */

	/* ibm pc */
	/* most likely 8 kbyte chips */
    ROM_LOAD("basicpc.bin", 0xf6000, 0x8000, CRC(ebacb791)) /* IBM C1.1 */
	/* split into 8 kbyte parts */
	/* the same as in the basic c1.10 as in the turboxt */
	/* 1501-476 10/27/82 */
    ROM_LOAD("biospc.bin", 0xfe000, 0x2000, CRC(e88792b3))

	/* tandy 1000 hx */
    ROM_LOAD("tandy1t.rom", 0xf0000, 0x10000, CRC(d37a1d5f))

	/* ibm xt */
    ROM_LOAD("xthdd.c8", 0xc8000, 0x2000, CRC(a96317da))
    ROM_LOAD("biosxt.bin", 0xf0000, 0x10000, CRC(36c32fde)) /* BASIC C1.1 */
	/* split into 2 chips for 16 bit access */
    ROM_LOAD_EVEN("ibmxt.0", 0xf0000, 0x8000, CRC(83727c42))
    ROM_LOAD_ODD("ibmxt.1", 0xf0000, 0x8000, CRC(2a629953))

	/* pc xt mfm controller
	   2 harddisks 17 sectors, 4 head, 613 tracks
	   serves 2 controllers? 0x320-3, 0x324-7, dma 3, irq5
	   movable, works at 0xee000 */
	/* western digital 06/28/89 */
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))

	/* lcs 6210d asic i2.1 09/01/1988 */
	/* problematic, currently showing menu and calls int21 (hangs)! */
    ROM_LOAD("xthdd.rom",  0xc8000, 0x02000, CRC(a96317da))
#endif

ROM_START( ibmpc )
	ROM_REGION(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
    ROM_LOAD("basicc11.f6", 0xf6000, 0x2000, CRC(80d3cf5d))
    ROM_LOAD("basicc11.f8", 0xf8000, 0x2000, CRC(673a4acc))
    ROM_LOAD("basicc11.fa", 0xfa000, 0x2000, CRC(aac3fc37))
    ROM_LOAD("basicc11.fc", 0xfc000, 0x2000, CRC(3062b3fc))
    ROM_LOAD("pc102782.bin", 0xfe000, 0x2000, CRC(e88792b3))
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("cga.chr",     0x00000, 0x01000, CRC(42009069))
ROM_END

ROM_START( ibmpca )
	ROM_REGION(0x100000,REGION_CPU1,0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
    ROM_LOAD("basicc11.f6", 0xf6000, 0x2000, CRC(80d3cf5d))
    ROM_LOAD("basicc11.f8", 0xf8000, 0x2000, CRC(673a4acc))
    ROM_LOAD("basicc11.fa", 0xfa000, 0x2000, CRC(aac3fc37))
    ROM_LOAD("basicc11.fc", 0xfc000, 0x2000, CRC(3062b3fc))
    ROM_LOAD("pc081682.bin", 0xfe000, 0x2000, CRC(5c3f0256))
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("cga.chr",     0x00000, 0x01000, CRC(42009069))
ROM_END

ROM_START( bondwell )
	ROM_REGION(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4)) /* taken from other machine */
	ROM_LOAD("bondwell.bin", 0xfe000, 0x2000, CRC(d435a405))
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("cga.chr",     0x00000, 0x01000, CRC(42009069)) /* taken from cga */
ROM_END

ROM_START( pcmda )
    ROM_REGION(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
    ROM_LOAD("pcxt.rom",    0xfe000, 0x02000, CRC(031aafad))
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("mda.rom",     0x00000, 0x02000, CRC(0bf56d70)) /* taken from original IBM MDA */
ROM_END

ROM_START( pc )
    ROM_REGION(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
/*    ROM_LOAD("xthdd.rom",  0xc8000, 0x02000, CRC(a96317da)) */
    ROM_LOAD("pcxt.rom",    0xfe000, 0x02000, CRC(031aafad))
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("cga.chr",     0x00000, 0x01000, CRC(42009069))
ROM_END

ROM_START( europc )
    ROM_REGION(0x100000,REGION_CPU1, 0)
	/* hdd bios integrated! */
    ROM_LOAD("50145", 0xf8000, 0x8000, CRC(1775a11d)) /* V2.07 */
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("50146", 0x00000, 0x02000, CRC(1305dcf5)) /*D1.0 */
ROM_END


ROM_START( ibmpcjr )
    ROM_REGION(0x100000,REGION_CPU1, 0)
#ifndef MESS_DEBUG
	ROM_LOAD("bios.rom", 0xf0000, 0x10000,CRC( 0))
#else
    ROM_LOAD("basic.rom", 0xf6000, 0x8000, CRC(0c19c1a8))
    ROM_LOAD("bios.rom", 0xfe000, 0x2000, CRC(98463f95))
#endif
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("cga.chr",     0x00000, 0x01000, CRC(42009069))
ROM_END

ROM_START( t1000hx )
	ROM_REGION(0x100000,REGION_CPU1, 0)
	ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
	/* partlist says it has 1 128kbyte rom */
	ROM_LOAD("t1000hx.e0", 0xe0000, 0x10000, CRC(61dbf242))
	ROM_LOAD("tandy1t.rom", 0xf0000, 0x10000, CRC(d37a1d5f))
	ROM_REGION(0x08000,REGION_GFX1, 0)
	/* expects 8x9 charset! */
	ROM_LOAD("50146", 0x00000, 0x02000, BAD_DUMP CRC(1305dcf5)) /*taken from europc, 9th blank */
ROM_END

ROM_START( t1000sx )
	ROM_REGION(0x100000,REGION_CPU1, 0)
	ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
	/* partlist says it has 1 128kbyte rom */
	ROM_LOAD("t1000hx.e0", 0xe0000, 0x10000, CRC(61dbf242))
	ROM_LOAD("t1000sx.f0", 0xf0000, 0x10000, CRC(0e016ecf))
	ROM_REGION(0x08000,REGION_GFX1, 0)
	/* expects 8x9 charset! */
	ROM_LOAD("50146", 0x00000, 0x02000, BAD_DUMP CRC(1305dcf5)) /*taken from europc, 9th blank */
ROM_END

ROM_START( ibmxt )
	ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
	ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
	ROM_LOAD16_BYTE("xt050986.0", 0xf0000, 0x8000, CRC(83727c42))
	ROM_LOAD16_BYTE("xt050986.1", 0xf0001, 0x8000, CRC(2a629953))
	ROM_REGION(0x08100,REGION_GFX1, 0)
	ROM_LOAD("cga.chr",     0x00000, 0x01000, CRC(42009069))
ROM_END

ROM_START( xtvga )
    ROM_REGION(0x100000,REGION_CPU1, 0)
    ROM_LOAD("et4000.bin", 0xc0000, 0x8000, CRC(f01e4be0))
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
    ROM_LOAD("pcxt.rom",    0xfe000, 0x02000, CRC(031aafad))
ROM_END

ROM_START( pc200 )
/*    ROM_REGION(0x100000,REGION_CPU1, 0) */
    ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
	/* special bios at 0xe0000 !? */
    ROM_LOAD16_BYTE("pc20v2.0", 0xfc001, 0x2000, CRC(41302eb8)) /* v2 */
    ROM_LOAD16_BYTE("pc20v2.1", 0xfc000, 0x2000, CRC(71b84616)) /* v2 */
	/* also mapped to f0000, f4000, f8000 */
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("40109.bin",     0x00000, 0x08000, CRC(a8b67639))
ROM_END

ROM_START( pc20 )
/*    ROM_REGION(0x100000,REGION_CPU1, 0) */
    ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))

	/* special bios at 0xe0000 !? */
	/* This is probably referring to a check for the Amstrad RP5-2 diagnostic */
	/* card, which can be plugged into an Amstrad XT for troubleshooting purposes. */
	/* - John Elliott */
    ROM_LOAD16_BYTE("pc20v2.0", 0xfc001, 0x2000, CRC(41302eb8)) /* v2 */
    ROM_LOAD16_BYTE("pc20v2.1", 0xfc000, 0x2000, CRC(71b84616)) /* v2 */
	/* also mapped to f0000, f4000, f8000 */
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("40109.bin",     0x00000, 0x08000, CRC(a8b67639))
ROM_END

ROM_START( ppc512 )
/*    ROM_REGION(0x100000,REGION_CPU1, 0) */
    ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
	/* special bios at 0xe0000 !? */
    ROM_LOAD16_BYTE("40107.v1", 0xfc001, 0x2000, CRC(4e37e769)) /* v1.9 */
    ROM_LOAD16_BYTE("40108.v1", 0xfc000, 0x2000, CRC(4f0302d9)) /* v1.9 */
	/* also mapped to f0000, f4000, f8000 */
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("40109.bin",     0x00000, 0x08000, CRC(a8b67639))
ROM_END

ROM_START( ppc640 )
/*    ROM_REGION(0x100000,REGION_CPU1, 0) */
    ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
	/* special bios at 0xe0000 !? */
    ROM_LOAD16_BYTE("40107.v2", 0xfc001, 0x2000, CRC(0785b63e)) /* v2.1 */
    ROM_LOAD16_BYTE("40108.v2", 0xfc000, 0x2000, CRC(5351cf8c)) /* v2.1 */
	/* also mapped to f0000, f4000, f8000 */
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("40109.bin",     0x00000, 0x08000, CRC(a8b67639))
ROM_END

ROM_START( pc1512 )
/*    ROM_REGION(0x100000,REGION_CPU1, 0) */
    ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
    ROM_LOAD16_BYTE("40044.v1", 0xfc001, 0x2000, CRC(668fcc94)) /* v1 */
    ROM_LOAD16_BYTE("40043.v1", 0xfc000, 0x2000, CRC(f72f1582)) /* v1 */
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("40045.bin",     0x00000, 0x02000, CRC(dd5e030f))
ROM_END

ROM_START( pc1512v2 )
/*    ROM_REGION(0x100000,REGION_CPU1, 0) */
    ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
    ROM_LOAD16_BYTE("40044.v2", 0xfc001, 0x2000, CRC(d2d4d2de)) /* v2 */
    ROM_LOAD16_BYTE("40043.v2", 0xfc000, 0x2000, CRC(1aec54fa)) /* v2 */
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("40078.bin",     0x00000, 0x02000, CRC(ae9c0d04))
ROM_END

ROM_START( pc1640 )
/*    ROM_REGION(0x100000,REGION_CPU1, 0) */
    ROM_REGION16_LE(0x100000,REGION_CPU1, 0)
    ROM_LOAD("40100", 0xc0000, 0x8000, CRC(d2d1f1ae)) /* this bios seams to be made for the amstrad pc */
    ROM_LOAD("wdbios.rom",  0xc8000, 0x02000, CRC(8e9e2bd4))
    ROM_LOAD16_BYTE("40043.v3", 0xfc001, 0x2000, CRC(e40a1513)) /* v3 */
    ROM_LOAD16_BYTE("40044.v3", 0xfc000, 0x2000, CRC(f1c074f3))
	ROM_REGION(0x08100,REGION_GFX1, 0)
    ROM_LOAD("40045.bin",     0x00000, 0x02000, CRC(dd5e030f))
ROM_END

static void ibmpc_floppy_getinfo(struct IODevice *dev)
{
	/* floppy */
	floppy_device_getinfo(dev, floppyoptions_pc);
	dev->count = 2;
}

static void ibmpc_printer_getinfo(struct IODevice *dev)
{
	/* printer */
	printer_device_getinfo(dev);
	dev->count = 3;
}

static void ibmpc_harddisk_getinfo(struct IODevice *dev)
{
	/* harddisk */
	harddisk_device_getinfo(dev);
	dev->count = 4;
}

SYSTEM_CONFIG_START(ibmpc)
	CONFIG_RAM_DEFAULT( 640 * 1024 )
	CONFIG_DEVICE(ibmpc_printer_getinfo)
	CONFIG_DEVICE(ibmpc_floppy_getinfo)
	CONFIG_DEVICE(ibmpc_harddisk_getinfo)
	CONFIG_QUEUE_CHARS( at_keyboard )
	CONFIG_ACCEPT_CHAR( at_keyboard )
	CONFIG_CHARQUEUE_EMPTY( at_keyboard )
SYSTEM_CONFIG_END

/***************************************************************************

  Game driver(s)

***************************************************************************/

/*	   YEAR		NAME		PARENT	COMPAT	MACHINE     INPUT	    INIT	    CONFIG   COMPANY	 FULLNAME */
COMP(  1982,	ibmpc,		0,		0,		pccga,      pccga,	    pccga,	    ibmpc,   "International Business Machines",  "IBM PC 10/27/82" )
COMP(  1982,	ibmpca,		ibmpc,	0,		pccga,      pccga,	    pccga,	    ibmpc,   "International Business Machines",  "IBM PC 08/16/82" )
COMP(  1987,	pc,			ibmpc,	0,		pccga,      pccga,		pccga,	    ibmpc,   "",  "PC (CGA)" )
COMPX( 1985,	bondwell,	ibmpc,	0,		pccga,		bondwell,   bondwell,	ibmpc,   "Bondwell Holding",  "BW230 (PRO28 Series)", GAME_NOT_WORKING )
COMP(  1988,	europc,		ibmpc,	0,		europc,     europc,		europc,     ibmpc,   "Schneider Rdf. AG",  "EURO PC")

/* pcjr (better graphics, better sound) */
COMPX( 1983,	ibmpcjr,	ibmpc,	0,		t1000hx,    tandy1t,	t1000hx,    ibmpc,   "International Business Machines",  "IBM PC Jr", GAME_NOT_WORKING|GAME_IMPERFECT_COLORS )
COMP(  1987,	t1000hx,	ibmpc,	0,		t1000hx,    tandy1t,	t1000hx,	ibmpc,   "Tandy Radio Shack",  "Tandy 1000HX")
COMP(  1987,	t1000sx,	ibmpc,	0,		t1000sx,    tandy1t,	t1000hx,	ibmpc,   "Tandy Radio Shack",  "Tandy 1000SX")

/* xt class (pc but 8086) */
COMP(  1986,	ibmxt,		ibmpc,	0,		xtcga,      xtcga,		pccga,		ibmpc,   "International Business Machines",  "IBM PC/XT (CGA)" )
COMP(  1988,	pc200,		ibmpc,	0,		pc200,		pc200,		pc200,		ibmpc,   "Sinclair Research",  "PC200 Professional Series")
COMP(  1988,	pc20,		ibmpc,	0,		pc200,		pc200,		pc200,		ibmpc,   "Amstrad plc",  "Amstrad PC20" )
COMP(  1987,	ppc512,		ibmpc,	0,		pc200,		pc200,		pc200,		ibmpc,   "Amstrad plc",  "Amstrad PPC512")
COMP(  1987,	ppc640,		ibmpc,	0,		pc200,		pc200,		pc200,		ibmpc,   "Amstrad plc",  "Amstrad PPC640")
COMP(  1986,	pc1512,		ibmpc,	0,		pc1512,     pc1512,		pc1512,		ibmpc,   "Amstrad plc",  "Amstrad PC1512 (version 1)")
COMP(  198?,	pc1512v2,	ibmpc,	0,		pc1512,     pc1512,		pc1512,		ibmpc,   "Amstrad plc",  "Amstrad PC1512 (version 2)")
COMPX( 1987,	pc1640,		ibmpc,	0,		pc1640,     pc1640,		pc1640,		ibmpc,   "Amstrad plc",  "Amstrad PC1640 / PC6400 (US)", GAME_NOT_WORKING )
/* pc2086 pc1512 with vga?? */
COMP ( 1987,	pcmda,		ibmpc,	0,		pcmda,      pcmda,		pcmda,	    ibmpc,   "",  "PC (MDA)" )
COMP ( 1987,	xtvga,		ibmpc,	0,		xtvga,      xtvga,		pc_vga,     ibmpc,   "",  "PC/XT (VGA, MF2 Keyboard)" )

