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tmspoker: Fix ROM loading (nw)

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This commit is contained in:
AJR 2017-07-21 14:15:02 -04:00
parent 535a9c9475
commit 547df3e483
1 changed files with 7 additions and 23 deletions
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30
src/mame/drivers/tmspoker.cpp
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@ -161,9 +161,7 @@
The switch placed below the program ROMs is connected to each PD /PGM line,
so you can switch between 2 different programs.
Both programs seems to be encrypted.
- Data lines are clearly inverted (Q1-Q8 --> D7-D0).
- Data lines are inverted according to TI convention (Q1-Q8 --> D7-D0).
- Address lines are scrambled:
@ -328,9 +326,9 @@ void tmspoker_state::machine_reset()
static ADDRESS_MAP_START( tmspoker_map, AS_PROGRAM, 8, tmspoker_state )
ADDRESS_MAP_GLOBAL_MASK(0x3fff)
AM_RANGE(0x0000, 0x0fff) AM_ROMBANK("bank1")
AM_RANGE(0x2800, 0x2800) AM_DEVWRITE("crtc", mc6845_device, address_w)
AM_RANGE(0x2800, 0x2800) AM_READNOP AM_DEVWRITE("crtc", mc6845_device, address_w)
AM_RANGE(0x2801, 0x2801) AM_DEVREADWRITE("crtc", mc6845_device, register_r, register_w)
AM_RANGE(0x3000, 0x33ff) AM_WRITE(tmspoker_videoram_w) AM_SHARE("videoram")
AM_RANGE(0x3000, 0x33ff) AM_RAM_WRITE(tmspoker_videoram_w) AM_SHARE("videoram")
AM_RANGE(0x3800, 0x3fff) AM_RAM //NVRAM?
AM_RANGE(0x2000, 0x20ff) AM_RAM //color RAM?
ADDRESS_MAP_END
@ -586,8 +584,10 @@ MACHINE_CONFIG_END
ROM_START( tmspoker )
ROM_REGION( 0x4000, "maincpu", 0 ) /* TMS9980 selectable code */
ROM_LOAD( "0.bin", 0x0000, 0x1000, CRC(a20ae6cb) SHA1(d47780119b4ebb16dc759a50dfc880ddbc6a1112) ) /* Program 1 */
ROM_LOAD( "8.bin", 0x1000, 0x1000, CRC(0c0a7159) SHA1(92cc3dc32a5bf4a7fa197e72c3931e583c96ef33) ) /* Program 2 */
ROM_LOAD( "0.bin", 0x0800, 0x0800, CRC(a20ae6cb) SHA1(d47780119b4ebb16dc759a50dfc880ddbc6a1112) ) /* Program 1 */
ROM_CONTINUE( 0x0000, 0x0800 )
ROM_LOAD( "8.bin", 0x1800, 0x0800, CRC(0c0a7159) SHA1(92cc3dc32a5bf4a7fa197e72c3931e583c96ef33) ) /* Program 2 */
ROM_CONTINUE( 0x0800, 0x0800 )
ROM_REGION( 0x0800, "gfx1", 0 )
ROM_LOAD( "3.bin", 0x0000, 0x0800, CRC(55458dae) SHA1(bf96d1b287292ff89bc2dbd9451a88a2ab941f3e) )
@ -603,22 +603,6 @@ ROM_END
DRIVER_INIT_MEMBER(tmspoker_state,bus)
{
/* decode the TMS9980 ROMs */
// MZ: Does not make sense to swap the bit order, so I commented it out.
// Only when unswapped do the commands make sense; otherwise there is a lot
// of invalid opcodes, and the RESET vector at 0000 is invalid either.
/* offs_t offs;
uint8_t *rom = memregion("maincpu")->base();
const size_t len = memregion("maincpu")->bytes();
for (offs = 0; offs < len; offs++)
{
rom[offs] = BITSWAP8(rom[offs],0,1,2,3,4,5,6,7);
}
*/
/* still need to decode the addressing lines */
/* text found in the ROM (A at 6, B at 8, etc: consistent with gfx rom byte offsets) suggests
that the lower address lines are good already: