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Cyclone mode: DrZ80(snd) also takes the unflagged sound Z80; default list cleanup (#2157) (#2205)

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DrZ80(snd) and Cyclone+DrZ80(snd) only replaced the Z80s flagged
CPU_AUDIO_CPU, and many sound Z80s are not flagged (CPS2, Taito,
Toaplan, the Mega Drive based boards...): those games kept the C Z80
with no sign in the log.

Now, on a board with no flagged CPU whose first CPU is not a Z80, its
first Z80 is taken as the sound CPU too, except where DrZ80 can't run
it: a Z80 with a daisy chain (DrZ80 has none), the CPS1 QSound Z80
(Kabuki-encrypted opcodes) and the Tatsumi sound Z80 (Round Up 5
hangs). The log says which Z80s are replaced and which are kept.

frontend_list.h: removed the entries that could do nothing, with the
same result for every game: 82 names not in the core, 531 games with
neither a 68000 nor a Z80, and a second zzyzzyx2 entry never reached.


Claude-Session: https://claude.ai/code/session_01N3fzdsnzkQVtgYtYzqepjX

Co-authored-by: Claude Opus 5.5 <[email protected]>
This commit is contained in:
zanacandClaude Opus 5.5 authored and GitHub committed 2026-11-05 03:36:34 -05:00
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commit af0f783b1e
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+29 -618
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src/mame2003/frontend_list.h
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src/mame2003/mame2003.c
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@@ -1809,16 +1809,41 @@ static void configure_cyclone_mode (int driverIndex)
}
}
/* Replace Z80 with DRZ80 only for sound CPUs */
/* Replace Z80 with DRZ80 only for sound CPUs: the ones flagged
CPU_AUDIO_CPU and, on a board with no flagged CPU whose first CPU
is not a Z80 (68000, 6809, V30...), its first Z80: the sound CPU
of many drivers not flagged, such as CPS2, Taito, Toaplan and the
Mega Drive based boards. Not when DrZ80 can't run that Z80:
- one with a daisy chain (Z80 CTC, PIO...): DrZ80 has none;
- the CPS1 QSound Z80: its opcodes are encrypted (Kabuki), and
DrZ80 reads the operands from the decrypted opcodes;
- the Tatsumi sound Z80 (Round Up 5): with DrZ80 the game hangs */
if (use_drz80_snd)
{
int guess_sound_z80 = (Machine->drv->cpu[0].cpu_type != CPU_Z80)
&& !strstr(drivers[driverIndex]->source_file, "cps1.c")
&& !strstr(drivers[driverIndex]->source_file, "tatsumi.c");
for (i=0;i<MAX_CPU;i++)
if (Machine->drv->cpu[i].cpu_flags & CPU_AUDIO_CPU)
guess_sound_z80 = 0;
for (i=0;i<MAX_CPU;i++)
{
unsigned int *type=(unsigned int *)&(Machine->drv->cpu[i].cpu_type);
if (*type==CPU_Z80 && Machine->drv->cpu[i].cpu_flags&CPU_AUDIO_CPU)
if (*type==CPU_Z80)
{
*type=CPU_DRZ80;
log_cb(RETRO_LOG_INFO, LOGPRE "Replaced Z80 sound\n");
if ((Machine->drv->cpu[i].cpu_flags & CPU_AUDIO_CPU) || (guess_sound_z80 && !Machine->drv->cpu[i].reset_param))
{
*type=CPU_DRZ80;
guess_sound_z80 = 0;
log_cb(RETRO_LOG_INFO, LOGPRE "Replaced Z80 sound (CPU %d)\n", i);
}
else
{
guess_sound_z80 = 0;
log_cb(RETRO_LOG_INFO, LOGPRE "Z80 (CPU %d) kept on the C core\n", i);
}
}
}
}