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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"
#include "emupal.h"
#include "screen.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") { }
void if800(machine_config &config);
private:
required_device<upd7220_device> m_hgdc;
required_shared_ptr<uint16_t> m_video_ram;
virtual void machine_start() override;
virtual void machine_reset() override;
required_device<cpu_device> m_maincpu;
required_device<palette_device> m_palette;
UPD7220_DISPLAY_PIXELS_MEMBER( hgdc_display_pixels );
void if800_io(address_map &map);
void if800_map(address_map &map);
void upd7220_map(address_map &map);
};
UPD7220_DISPLAY_PIXELS_MEMBER( if800_state::hgdc_display_pixels )
{
rgb_t const *const palette = m_palette->palette()->entry_list_raw();
int gfx = m_video_ram[address];
for(int xi=0;xi<16;xi++)
{
uint8_t pen = BIT(gfx, xi);
bitmap.pix(y, x + xi) = palette[pen];
}
}
void if800_state::if800_map(address_map &map)
{
map.unmap_value_high();
map(0x00000, 0x0ffff).ram();
map(0xfe000, 0xfffff).rom().region("ipl", 0);
}
void if800_state::if800_io(address_map &map)
{
map.unmap_value_high();
// map(0x0640, 0x065f) dma?
map(0x0660, 0x0663).rw(m_hgdc, FUNC(upd7220_device::read), FUNC(upd7220_device::write)).umask16(0x00ff);
}
/* Input ports */
static INPUT_PORTS_START( if800 )
INPUT_PORTS_END
void if800_state::machine_start()
{
}
void if800_state::machine_reset()
{
}
void if800_state::upd7220_map(address_map &map)
{
map(0x00000, 0x3ffff).ram().share("video_ram");
}
void if800_state::if800(machine_config &config)
{
/* basic machine hardware */
I8086(config, m_maincpu, 8000000);
m_maincpu->set_addrmap(AS_PROGRAM, &if800_state::if800_map);
m_maincpu->set_addrmap(AS_IO, &if800_state::if800_io);
// PIC8259(config, "pic8259", 0);
UPD7220(config, m_hgdc, 8000000/4);
m_hgdc->set_addrmap(0, &if800_state::upd7220_map);
m_hgdc->set_display_pixels(FUNC(if800_state::hgdc_display_pixels));
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_refresh_hz(50);
screen.set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
screen.set_size(640, 480);
screen.set_visarea(0, 640-1, 0, 480-1);
screen.set_screen_update("upd7220", FUNC(upd7220_device::screen_update));
PALETTE(config, m_palette).set_entries(8);
// MCFG_VIDEO_START_OVERRIDE(if800_state,if800)
}
/* ROM definition */
ROM_START( if800 )
ROM_REGION16_LE( 0x2000, "ipl", ROMREGION_ERASEFF )
ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(36212491) SHA1(6eaa8885e2dccb6dd86def6c0c9be1870cee957f))
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1985, if800, 0, 0, if800, if800, if800_state, empty_init, "Oki Electric", "if800 model 60", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
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