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(MESS) New working driver [Robbbert]

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Cromemco CB-308 Single Card Computer
This commit is contained in:
Robbbert 2013-12-01 11:25:03 +00:00
parent 803898cf61
commit 67ae337ab1
2 changed files with 18 additions and 14 deletions
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31
src/mess/drivers/mcb216.c
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@ -2,7 +2,9 @@
// copyright-holders:Robbbert
/***************************************************************************
2013-12-01 Driver for Cromemco MCB-216 SCC (Single Card Computer)
2013-12-01 Driver for Cromemco MCB-216 SCC (Single Card Computer),
and also the earlier CB-308.
The driver is working, just missing some hardware info (see ToDo).
TODO:
@ -15,13 +17,18 @@
- 2000 to 23FF - standard ram
- 2400 to FFFF - optional whatever the user wants (expect ram)
When started, you must press Enter twice, then you will be in BASIC.
To go to the monitor, use the QUIT command, and to return use the B
command.
MCB-216:
Press Enter twice. You will see the Basic OK prompt. To get into the
monitor, use the QUIT command, and to return use the B command.
The mcb216 can use an optional floppy-disk-drive unit. The only other
storage is paper-tape, which is expected to be attached to the terminal.
CB-308:
Press Enter twice. You will see the Monitor logo. To get into the
BASIC (if it was fitted), enter GE400. All monitor commands must be
in uppercase. The only storage is paper-tape.
****************************************************************************/
#include "emu.h"
@ -69,13 +76,6 @@ static ADDRESS_MAP_START(cb308_mem, AS_PROGRAM, 8, mcb216_state)
AM_RANGE(0xe000, 0xefff) AM_ROM AM_REGION("roms", 0)
ADDRESS_MAP_END
// io unknown, assumed to be the same as mcb216
static ADDRESS_MAP_START(cb308_io, AS_IO, 8, mcb216_state)
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x00) AM_READ(status_r)
AM_RANGE(0x01, 0x01) AM_READ(keyin_r) AM_DEVWRITE(TERMINAL_TAG, generic_terminal_device, write)
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( mcb216 )
@ -132,7 +132,7 @@ static MACHINE_CONFIG_START( cb308, mcb216_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z80, 4000000)
MCFG_CPU_PROGRAM_MAP(cb308_mem)
MCFG_CPU_IO_MAP(cb308_io)
MCFG_CPU_IO_MAP(mcb216_io)
MCFG_MACHINE_RESET_OVERRIDE(mcb216_state, cb308)
/* video hardware */
@ -148,8 +148,11 @@ ROM_END
ROM_START( cb308 )
ROM_REGION(0x1000, "roms", 0)
ROM_LOAD( "cb308r0", 0x0000, 0x0800, NO_DUMP )
ROM_LOAD( "cb308r1", 0x0800, 0x0800, NO_DUMP )
ROM_LOAD( "cb308r0", 0x0000, 0x0400, CRC(62f50531) SHA1(3071e2ab7fc6b2ca889e4fb5cf7cc9ee8fbe53d3) )
// undumped BASIC
ROM_LOAD( "cb308r1", 0x0400, 0x0400, NO_DUMP )
ROM_LOAD( "cb308r2", 0x0800, 0x0400, NO_DUMP )
ROM_LOAD( "cb308r3", 0x0c00, 0x0400, NO_DUMP )
ROM_END
/* Driver */

1
src/mess/mess.lst
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@ -2296,3 +2296,4 @@ molecula
taitons1
sh4robot
mcb216
cb308