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libretro / mame2016-libretro

Late 2016 version of MAME (0.174) for libretro. Compatible with MAME 0.174 sets.
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Main CPU Overclock Additional Values #56

Closed KMFDManic closed 2 years ago

KMFDManic commented 2 years ago

On lower spec hardwares, such as Pi, Mini Classics, values 11-29 are detrimental in helping better run games like Deathsmiles, Outfoxies, Sega System 32 Games, etc., which are otherwise nearly impossible to run well! I have had this implemented for awhile in MAME 2003 Xtreme, which really helps on Killer Instinct and Cruis'n USA!

Personal thanks pjft on 2016; grant2258 on 2003 Plus/Xtreme!

barbudreadmon commented 2 years ago

I'm not a maintainer for this core so not sure it's useful to ping me from other PRs about this :). Looks ok to me EXCEPT you can't overclock beyond 150% ? What about games that would appreciate an overclock instead of a downclock ? I know there is a limitation of 64 values for a core option (except if it finally got removed ?) but maybe the granularity between 11 and 54 is overkill here ?

Edit : oh wait, isn't there 65 values here ? are you sure it's within limit ? Edit2 : nevermind, i checked current value of RETRO_NUM_CORE_OPTION_VALUES_MAX and it seems to be 128 now, probably a recent change since i remember hitting the previous 64 limit with my "cheats to core option" converter

pjft commented 2 years ago

Same remark as @barbudreadmon - I'm not a maintainer here, but it looks ok to me in general.

Thanks!

KMFDManic commented 2 years ago

I mainly just wanted to run it by you guys, since you both were agreeable to the changes last time. In any case, thanks!

@twinaphex this would be for you to merge. I have tested the lower numbers on several dozen games, with considerable success. This would be a helpful addition for those who need just a little more push out of the Core.

I also was able to get N64/Dreamcast, fixed up for the Mini Classics. Thanks, as always, for your constant insight, as well as the many other helpful people in the Libretro Scene, when things come up!