diff options
Diffstat (limited to 'src/mame/drivers/if800.c')
-rw-r--r-- | src/mame/drivers/if800.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/mame/drivers/if800.c b/src/mame/drivers/if800.c new file mode 100644 index 00000000000..610269b9642 --- /dev/null +++ b/src/mame/drivers/if800.c @@ -0,0 +1,117 @@ +// 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) |