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== [http://github.com/mamedev/mame/blob/master/src/mame/drivers/mephisto_mm2.cpp mephisto_mm2] == | == [http://github.com/mamedev/mame/blob/master/src/mame/drivers/mephisto_mm2.cpp mephisto_mm2] == | ||
''' mm4tk, mm5p ''' - They need proper emulation of the TurboKit (it's not as simple as a CPU overclock plus ROM patch). | ''' mm4tk, mm5p ''' - They need proper emulation of the TurboKit (it's not as simple as a CPU overclock plus ROM patch). | ||
== [http://github.com/mamedev/mame/blob/master/src/mame/drivers/monon_color.cpp monon_color] == | |||
Clock divider unknown. | |||
== [http://github.com/mamedev/mame/blob/master/src/mame/drivers/news_r4k.cpp news_r4k.cpp] == | |||
== [http://github.com/mamedev/mame/blob/master/src/mame/drivers/psikyo.cpp psikyo] == | == [http://github.com/mamedev/mame/blob/master/src/mame/drivers/psikyo.cpp psikyo] == | ||
Revision as of 05:53, 22 August 2022
This page is designed to allow for a quick look over all the drivers with a MACHINE_IMPERFECT_TIMING flag by giving, as much as possible, an idea on the amount of effort needed to fix them.
alpha68k
goldmedl, goldmedla, goldmedlb - Dash events timers relies on MCU irq timings, which can't be accurate til the MCU is decapped and emulated.
alpha68k_n
sstingry - Super Stingray MCU irq controls timer speed. The MCU has been hooked up but the clock is almost certainly wrong.
aristmk5
Games are running at double speed.
clshroad
clshroad - Main and sound CPUs synching isn't perfect.
cv1k
Games are running faster than on real hardware.
fidel_as12
Seems a little bit slower than the real machine. Currently, a dummy timer workaround is needed, or it's much worse. Is the problem here is due to timing of CPU addressbus changes?
fidel_eag68k
feagv10 - V10 CPU emulation is too slow, MAME 68040 opcode timing is same as 68030 but in reality it is much faster, same goes for V11 of course (see below).
feagv11 - V11 CPU should be M68EC060, not yet emulated. Now using M68EC040 in its place at twice the frequency due to lack of superscalar.
fidel_elite
fpres/feas irq active time needs verifying.
fidel_sc12
Seems a little bit slower than the real machine. Currently, a dummy timer workaround is needed, or it's much worse. Is the problem here is due to timing of CPU addressbus changes?
konamigs
ddrkids - Songs desync.
konamim2
Games are running slower than they should.
mephisto_mm2
mm4tk, mm5p - They need proper emulation of the TurboKit (it's not as simple as a CPU overclock plus ROM patch).
monon_color
Clock divider unknown.
news_r4k.cpp
psikyo
Excessive input lag.
saitek_risc2500
More accurate dynamic cpu clock divider is needed.
spg2xx_shredmjr
Bad music timings (too slow).
taitojc
Games are running at wrong speed(unthrottled?) compared to pcb recordings, easily noticeable on sidebs/sidebs2, for example the selection screens are too fast, and the driving is almost twice as slow.
tasc
More accurate dynamic cpu clock divider is needed.
