diff options
Diffstat (limited to 'src/mame/drivers/ibm6580.c')
-rw-r--r-- | src/mame/drivers/ibm6580.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/mame/drivers/ibm6580.c b/src/mame/drivers/ibm6580.c new file mode 100644 index 00000000000..8a10c35a487 --- /dev/null +++ b/src/mame/drivers/ibm6580.c @@ -0,0 +1,104 @@ +// license:BSD-3-Clause +// copyright-holders:Robbbert +/*************************************************************************** + +IBM 6580 DisplayWriter. + +2013-08-19 Skeleton driver. + +A green-screen dedicated word-processing workstation. It uses 20cm floppy +disks. It could have up to 224k of ram. + +ToDo: +- Everything! +- The roms need to be loaded properly. +- Chargen rom is not dumped. + +****************************************************************************/ + +#include "emu.h" +#include "cpu/i86/i86.h" + +class ibm6580_state : public driver_device +{ +public: + ibm6580_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag) + , m_maincpu(*this, "maincpu") + { } + + const UINT8 *m_p_chargen; + DECLARE_PALETTE_INIT(ibm6580); + UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); +private: + virtual void machine_reset(); + required_device<cpu_device> m_maincpu; +}; + + +static ADDRESS_MAP_START(ibm6580_mem, AS_PROGRAM, 16, ibm6580_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x00000,0xfdfff) AM_RAM + AM_RANGE(0xfe000,0xfffff) AM_ROM AM_REGION("user1", 0) +ADDRESS_MAP_END + +static ADDRESS_MAP_START(ibm6580_io, AS_IO, 16, ibm6580_state) + //ADDRESS_MAP_UNMAP_HIGH + //ADDRESS_MAP_GLOBAL_MASK(0xff) +ADDRESS_MAP_END + + +/* Input ports */ +static INPUT_PORTS_START( ibm6580 ) +INPUT_PORTS_END + +UINT32 ibm6580_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) +{ + return 0; +} + +PALETTE_INIT_MEMBER( ibm6580_state, ibm6580 ) +{ + palette.set_pen_color(0, 0, 0, 0 ); /* Black */ + palette.set_pen_color(1, 0, 255, 0 ); /* Full */ + palette.set_pen_color(2, 0, 128, 0 ); /* Dimmed */ +} + +void ibm6580_state::machine_reset() +{ + m_p_chargen = memregion("chargen")->base(); +} + +static MACHINE_CONFIG_START( ibm6580, ibm6580_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu", I8086, 4000000) // no idea + MCFG_CPU_PROGRAM_MAP(ibm6580_mem) + MCFG_CPU_IO_MAP(ibm6580_io) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(60) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_UPDATE_DRIVER(ibm6580_state, screen_update) + MCFG_SCREEN_SIZE(640, 240) + MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 239) + MCFG_SCREEN_PALETTE("palette") + + MCFG_PALETTE_ADD("palette", 3) + MCFG_PALETTE_INIT_OWNER(ibm6580_state, ibm6580) +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( ibm6580 ) + ROM_REGION16_LE( 0x2000, "user1", 0 ) + ROM_LOAD16_BYTE("8493823.bin", 0x0001, 0x1000, CRC(0bea066f) SHA1(8a42e24b609df7d9ca9cd52929702a61f7024635)) + ROM_LOAD16_BYTE("8493822.bin", 0x0000, 0x1000, CRC(6e67f41a) SHA1(600fee505efe5cbcc8bdbab91d233378c7be4f12)) + + ROM_REGION( 0x2000, "chargen", 0 ) + ROM_LOAD( "8493383.bin", 0x0000, 0x2000, NO_DUMP ) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ +COMP( 1980, ibm6580, 0, 0, ibm6580, ibm6580, driver_device, 0, "IBM", "IBM 6580 DisplayWriter", MACHINE_IS_SKELETON) |