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author | 2013-10-20 19:31:44 +0000 | |
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committer | 2013-10-20 19:31:44 +0000 | |
commit | d2236708b3ca7fc0472e9e4915e0ba4dd01c4089 (patch) | |
tree | ce3f33a76988eabd3981048a76c9a3871c0f5a56 /src/emu/bus/abcbus/dos.c | |
parent | cc9274b5bad0cdb997e7db8e9f73a78277bc9308 (diff) |
(MESS) abcbus: Moved under emu/bus. (nw)
Diffstat (limited to 'src/emu/bus/abcbus/dos.c')
-rw-r--r-- | src/emu/bus/abcbus/dos.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/emu/bus/abcbus/dos.c b/src/emu/bus/abcbus/dos.c new file mode 100644 index 00000000000..d35f588358b --- /dev/null +++ b/src/emu/bus/abcbus/dos.c @@ -0,0 +1,146 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Luxor ABC DOS card emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +*********************************************************************/ + +/* + +PCB Layout +---------- + +55 10762-01 + +|-----------------------------------| +| | +| | +| | +| | +| ROM3 ROM2 | +| | +| | +| | +| | +| | +| ROM1 ROM0 | +| | +| | +| | +| | +| | +| | +| LS02 LS139 | +| | +| | +| | +| LS367 LS241 LS241 | +| | +| | +| | +| | +|--|-----------------------------|--| + |------------CON1-------------| + +Notes: + All IC's shown. + + ROM0 - Synertek C55022 4Kx8 ROM "DOSDD80" + ROM1 - Motorola MCM2708C 1Kx8 EPROM "9704" + ROM2 - empty socket + ROM3 - empty socket + CON1 - ABC bus connector + +*/ + +#include "dos.h" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type ABC_DOS = &device_creator<abc_dos_device>; + + +//------------------------------------------------- +// ROM( abc_dos ) +//------------------------------------------------- + +ROM_START( abc_dos ) + ROM_REGION( 0x2000, "dos", ROMREGION_ERASEFF ) + ROM_DEFAULT_BIOS("ufd20") + ROM_SYSTEM_BIOS( 0, "abcdos", "ABC-DOS" ) // Scandia Metric FD2 + ROMX_LOAD( "abcdos.3d", 0x0000, 0x1000, CRC(2cb2192f) SHA1(a6b3a9587714f8db807c05bee6c71c0684363744), ROM_BIOS(1) ) + ROM_SYSTEM_BIOS( 1, "dosdd80", "ABC-DOS DD" ) // ABC 830 + ROMX_LOAD( "dosdd80.3d", 0x0000, 0x1000, CRC(36db4c15) SHA1(ae462633f3a9c142bb029beb14749a84681377fa), ROM_BIOS(2) ) + ROM_SYSTEM_BIOS( 2, "ufd20", "UFD-DOS v.20" ) // ABC 830 + ROMX_LOAD( "ufddos20.3d", 0x0000, 0x1000, CRC(69b09c0b) SHA1(403997a06cf6495b8fa13dc74eff6a64ef7aa53e), ROM_BIOS(3) ) + ROM_LOAD( "printer.4c", 0x1000, 0x400, NO_DUMP ) + //ROM_LOAD( "spare.4a", 0x1400, 0x400, NO_DUMP ) + ROM_LOAD( "9704.3c", 0x1800, 0x400, NO_DUMP ) + //ROM_LOAD( "spare.3a", 0x1c00, 0x400, NO_DUMP ) +ROM_END + + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *abc_dos_device::device_rom_region() const +{ + return ROM_NAME( abc_dos ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// abc_dos_device - constructor +//------------------------------------------------- + +abc_dos_device::abc_dos_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, ABC_DOS, "ABC DOS", tag, owner, clock, "abc_dos", __FILE__), + device_abcbus_card_interface(mconfig, *this), + m_rom(*this, "dos") +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void abc_dos_device::device_start() +{ +} + + + +//************************************************************************** +// ABC BUS INTERFACE +//************************************************************************** + +//------------------------------------------------- +// abcbus_xmemfl - +//------------------------------------------------- + +UINT8 abc_dos_device::abcbus_xmemfl(offs_t offset) +{ + UINT8 data = 0xff; + + if (offset >= 0x6000 && offset < 0x8000) + { + data = m_rom->base()[offset & 0x1fff]; + } + + return data; +} |