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// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************
if800
****************************************************************************/
#include "emu.h"
#include "cpu/i86/i86.h"
#include "machine/pic8259.h"
#include "video/upd7220.h"
class if800_state : public driver_device
{
public:
if800_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_hgdc(*this, "upd7220"),
m_video_ram(*this, "video_ram"),
m_maincpu(*this, "maincpu"),
m_palette(*this, "palette") { }
required_device<upd7220_device> m_hgdc;
required_shared_ptr<UINT16> m_video_ram;
virtual void machine_start();
virtual void machine_reset();
required_device<cpu_device> m_maincpu;
required_device<palette_device> m_palette;
UPD7220_DISPLAY_PIXELS_MEMBER( hgdc_display_pixels );
};
UPD7220_DISPLAY_PIXELS_MEMBER( if800_state::hgdc_display_pixels )
{
const rgb_t *palette = m_palette->palette()->entry_list_raw();
int xi,gfx;
UINT8 pen;
gfx = m_video_ram[address >> 1];
for(xi=0;xi<16;xi++)
{
pen = ((gfx >> xi) & 1) ? 1 : 0;
bitmap.pix32(y, x + xi) = palette[pen];
}
}
static ADDRESS_MAP_START(if800_map, AS_PROGRAM, 16, if800_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x00000,0x0ffff) AM_RAM
AM_RANGE(0xfe000,0xfffff) AM_ROM AM_REGION("ipl", 0)
ADDRESS_MAP_END
static ADDRESS_MAP_START(if800_io, AS_IO, 16, if800_state)
ADDRESS_MAP_UNMAP_HIGH
// AM_RANGE(0x0640, 0x065f) dma?
AM_RANGE(0x0660, 0x0663) AM_DEVREADWRITE8("upd7220", upd7220_device, read, write,0x00ff)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( if800 )
INPUT_PORTS_END
void if800_state::machine_start()
{
}
void if800_state::machine_reset()
{
}
static ADDRESS_MAP_START( upd7220_map, AS_0, 16, if800_state )
AM_RANGE(0x00000, 0x3ffff) AM_RAM AM_SHARE("video_ram")
ADDRESS_MAP_END
static MACHINE_CONFIG_START( if800, if800_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", I8086, 8000000)
MCFG_CPU_PROGRAM_MAP(if800_map)
MCFG_CPU_IO_MAP(if800_io)
// MCFG_PIC8259_ADD( "pic8259", if800_pic8259_config )
MCFG_DEVICE_ADD("upd7220", UPD7220, 8000000/4)
MCFG_DEVICE_ADDRESS_MAP(AS_0, upd7220_map)
MCFG_UPD7220_DISPLAY_PIXELS_CALLBACK_OWNER(if800_state, hgdc_display_pixels)
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(640, 480)
MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
MCFG_SCREEN_UPDATE_DEVICE("upd7220", upd7220_device, screen_update)
MCFG_PALETTE_ADD("palette", 8)
// MCFG_PALETTE_INIT(black_and_white)
// MCFG_VIDEO_START_OVERRIDE(if800_state,if800)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( if800 )
ROM_REGION( 0x2000, "ipl", ROMREGION_ERASEFF )
ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(36212491) SHA1(6eaa8885e2dccb6dd86def6c0c9be1870cee957f))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
COMP( 1985, if800, 0, 0, if800, if800, driver_device, 0, "Oki Electric", "if800 model 60", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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