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Attempt 1 to get superset ROM working.

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This commit is contained in:
Mark Garlanger 2017-03-03 23:53:07 -06:00
parent 4a709f7ecc
commit 59e966fac4
1 changed files with 47 additions and 0 deletions
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47
src/mame/drivers/h19.cpp
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@ -159,6 +159,26 @@ static ADDRESS_MAP_START(h19_mem, AS_PROGRAM, 8, h19_state)
AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM AM_SHARE("videoram")
ADDRESS_MAP_END
//#define APPROACH_1
//#define APPROACH_2
#if defined(APPROACH_1)
static ADDRESS_MAP_START(ssh19_mem, AS_PROGRAM, 8, h19_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x3fff) AM_ROM
AM_RANGE(0x4000, 0x4100) AM_MIRROR(0x3e00) AM_RAM
AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM AM_SHARE("videoram")
ADDRESS_MAP_END
#elif defined(APPROACH_2)
static ADDRESS_MAP_START(ssh19_mem, AS_PROGRAM, 8, h19_state)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x1fff) AM_ROM AM_REGION("roms", 0x2000)
AM_RANGE(0x2000, 0x3fff) AM_ROM AM_REGION("roms", 0x6000)
AM_RANGE(0x4000, 0x4100) AM_MIRROR(0x3e00) AM_RAM
AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM AM_SHARE("videoram")
ADDRESS_MAP_END
#endif
static ADDRESS_MAP_START( h19_io, AS_IO, 8, h19_state)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
@ -565,6 +585,12 @@ static MACHINE_CONFIG_START( h19, h19_state )
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MACHINE_CONFIG_END
#if defined(APPROACH_1) || defined(APPROACH_2)
static MACHINE_CONFIG_DERIVED( ssh19, h19 )
MCFG_CPU_PROGRAM_MAP(ssh19_mem)
MACHINE_CONFIG_END
#endif
/* ROM definition */
ROM_START( h19 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
@ -608,9 +634,26 @@ ROM_START( watz19 )
ROM_END
ROM_START( ssh19 ) // Superset for H19
#if defined(APPROACH_1)
// reserve an extra 16k outside of addressable space to hide the empty blocks of ram
ROM_REGION( 0x14000, "maincpu", ROMREGION_ERASEFF )
// Superset ROM - although the ROM is 32K, only 16K is accessible - hide the first 8k
ROM_LOAD( "27256_101-402_superset_code.bin", 0x10000, 0x2000, CRC(a6896076) SHA1(a4e2d25028dc75a665c3f5a830a4e8cdecbd481c))
// load the 2nd 8k into low memory
ROM_CONTINUE(0x00000, 0x2000)
// hide the 3rd 8k
ROM_CONTINUE(0x12000, 0x2000)
// load the last 8k
ROM_CONTINUE(0x02000, 0x2000)
#elif defined(APPROACH_2)
ROM_REGION( 0x10000, "roms", ROMREGION_ERASEFF )
// Superset ROM - although the ROM is 32K, only 16K is accessible - hide the first 8k
ROM_LOAD( "27256_101-402_superset_code.bin", 0x0000, 0x8000, CRC(a6896076) SHA1(a4e2d25028dc75a665c3f5a830a4e8cdecbd481c))
#else
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
// Superset ROM - TODO although the ROM is 32K, only 16K is accessible
ROM_LOAD( "27256_101-402_superset_code.bin", 0x0000, 0x8000, CRC(a6896076) SHA1(a4e2d25028dc75a665c3f5a830a4e8cdecbd481c))
#endif
ROM_REGION( 0x0800, "chargen", 0 )
// Superset font - 32k
@ -629,5 +672,9 @@ COMP( 1979, h19, 0, 0, h19, h19, driver_device, 0, "Heath I
/* TODO - verify the years for these third-party replacement ROMs. */
COMP( 1982, super19, h19, 0, h19, h19, driver_device, 0, "Heath Inc", "Heathkit H-19 w/ Super-19 ROM", 0 )
COMP( 1982, watz19, h19, 0, h19, h19, driver_device, 0, "Heath Inc", "Heathkit H-19 w/ Watzman ROM", 0 )
#if defined(APPROACH_1) || defined(APPROACH_2)
COMP( 1982, ssh19, h19, 0, ssh19, h19, driver_device, 0, "Heath Inc", "Heathkit H-19 w/ SuperSet ROM", MACHINE_NOT_WORKING )
#else
COMP( 1982, ssh19, h19, 0, h19, h19, driver_device, 0, "Heath Inc", "Heathkit H-19 w/ SuperSet ROM", MACHINE_NOT_WORKING )
#endif