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Fixed TMS5220 speech in Turbo Sub [Phil Bennett, Jay Gallagher]

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This commit is contained in:
Phil Bennett 2009-01-21 15:50:31 +00:00
parent 771e2d4ab4
commit cfd83c2f3e
1 changed files with 18 additions and 17 deletions
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35
src/mame/drivers/esripsys.c
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@ -17,12 +17,6 @@
* Hold '*' during the game to access the operator menu.
To do:
* TMS5220 speech. The game is sending speech play commands to
the sound CPU but any speech code greater than 2 is ignored (see $EC26).
I think most of the speech data is stored in the upper half of the
banked sound data ROMs but I don't know how or when the ROM
bank is switched :/
* Confirm that occasional line drop outs do occur on real hardware.
14 sprites seems to be the maximum number that the RIP CPU can safely
process per line.
@ -528,6 +522,9 @@ static WRITE8_HANDLER( s_200e_w )
static WRITE8_HANDLER( s_200f_w )
{
UINT8* const ROM = memory_region(space->machine, "sound_data");
int rombank = data & 0x20 ? 0x2000 : 0;
/* Bit 6 -> Reset latch U56A */
/* Bit 7 -> Clock latch U56B */
if (s_to_g_latch2 & 0x40)
@ -539,6 +536,11 @@ static WRITE8_HANDLER( s_200f_w )
if (!(s_to_g_latch2 & 0x80) && (data & 0x80))
u56b = 1;
/* Speech data resides in the upper 8kB of the ROMs */
memory_set_bankptr(space->machine, 2, &ROM[0x0000 + rombank]);
memory_set_bankptr(space->machine, 3, &ROM[0x4000 + rombank]);
memory_set_bankptr(space->machine, 4, &ROM[0x8000 + rombank]);
s_to_g_latch2 = data;
}
@ -554,7 +556,7 @@ static READ8_HANDLER( tms5220_r )
/* TMS5220 core returns status bits in D7-D6 */
UINT8 status = tms5220_status_r(space, 0);
status = (status & 0x80 >> 5) | (status & 0x40 >> 5) | (status & 0x20 >> 5);
status = ((status & 0x80) >> 5) | ((status & 0x40) >> 5) | ((status & 0x20) >> 5);
return (!tms5220_ready_r() << 7) | (!tms5220_int_r() << 6) | status;
}
@ -566,16 +568,15 @@ static WRITE8_HANDLER( tms5220_w )
{
if (offset == 0)
{
if (tms5220_ready_r())
tms5220_status_r(space, 0);
tms_data = data;
tms5220_data_w(0, 0, tms_data);
}
#if 0
if (offset == 1)
{
if (tms5220_ready_r())
tms5220_data_w(0, 0, tms_data);
tms5220_data_w(0, 0, tms_data);
}
#endif
}
/* Not used in later revisions */
@ -760,11 +761,11 @@ static MACHINE_DRIVER_START( esripsys )
/* Sound hardware */
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD("tms5220nl", TMS5220, 640000)
MDRV_SOUND_ADD("dac", DAC, 0)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MDRV_SOUND_ADD("dac", DAC, 0)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MDRV_SOUND_ADD("tms5220nl", TMS5220, 640000)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MACHINE_DRIVER_END
@ -1013,5 +1014,5 @@ ROM_END
*
*************************************/
GAME( 1985, turbosub, 0, esripsys, turbosub, esripsys, ROT0, "Entertainment Sciences", "Turbo Sub (prototype rev. TSCA)", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND )
GAME( 1985, turbosba, turbosub, esripsys, turbosub, esripsys, ROT0, "Entertainment Sciences", "Turbo Sub (prototype rev. TSC6)", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_SOUND )
GAME( 1985, turbosub, 0, esripsys, turbosub, esripsys, ROT0, "Entertainment Sciences", "Turbo Sub (prototype rev. TSCA)", GAME_SUPPORTS_SAVE )
GAME( 1985, turbosba, turbosub, esripsys, turbosub, esripsys, ROT0, "Entertainment Sciences", "Turbo Sub (prototype rev. TSC6)", GAME_SUPPORTS_SAVE )