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flower: overclock cpu again

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This commit is contained in:
hap 2023-08-04 11:58:01 +02:00
parent 0ebe198dfe
commit 17002db038
2 changed files with 6 additions and 4 deletions
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2
src/devices/cpu/z80/z80.cpp
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@ -33,7 +33,7 @@
* Now:
* + fetch opcode
* + call EXEC()
+ execute instruction adjusting icount per each Read (arg(), recursive rop()) and Write
* + execute instruction adjusting icount per each Read (arg(), recursive rop()) and Write
* Changes in 3.9:
* - Fixed cycle counts for LD IYL/IXL/IYH/IXH,n [Marshmellow]
* - Fixed X/Y flags in CCF/SCF/BIT, ZEXALL is happy now [hap]

8
src/mame/misc/flower.cpp
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@ -8,6 +8,8 @@
original "wiped off due of not anymore licensable" driver by insideoutboy.
TODO:
- CPU speed is probably wrong. The pacing is fine at 3.072MHz, but then
the game locks up sometimes. Or is the cause elsewhere?
- priority might be wrong in some places (title screen stars around the
galaxy, planet ship 3rd boss, 2nd boss);
- sound chips (similar to Namco custom chips?)
@ -503,13 +505,13 @@ void flower_state::slave_irq_ack_w(int state)
void flower_state::flower(machine_config &config)
{
Z80(config, m_mastercpu, MASTER_CLOCK / 6); // divider unknown
Z80(config, m_mastercpu, MASTER_CLOCK / 4); // divider unknown
m_mastercpu->set_addrmap(AS_PROGRAM, &flower_state::shared_map);
Z80(config, m_slavecpu, MASTER_CLOCK / 6); // divider unknown
Z80(config, m_slavecpu, MASTER_CLOCK / 4); // divider unknown
m_slavecpu->set_addrmap(AS_PROGRAM, &flower_state::shared_map);
Z80(config, m_audiocpu, MASTER_CLOCK / 6); // divider unknown
Z80(config, m_audiocpu, MASTER_CLOCK / 4); // divider unknown
m_audiocpu->set_addrmap(AS_PROGRAM, &flower_state::audio_map);
m_audiocpu->set_periodic_int(FUNC(flower_state::irq0_line_hold), attotime::from_hz(90));