08037: snes, snespal [mk2 and clones]: Games freeze on black screen before making it to title screen.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08037	Crash/Freeze	Critical (emulation)	Have not tried	Jul 22, 2021, 22:59	Jul 23, 2021, 00:14

Tester	kmg	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Open	OS	MacOS X
Status [?]	Confirmed			Driver	nintendo/snes.cpp
Version	0.233	Fixed in Version		Build
		Fixed in Git Commit		Github Pull Request #

Summary	08037: snes, snespal [mk2 and clones]: Games freeze on black screen before making it to title screen.
Description	As far as I can tell this affects all Mortal Kombat II clones EXCEPT mk2ua, the earlier US revision. The freeze happens after an animated "Sculptured Software" company logo, present in all clones except mk2ua. Some of the clones also lack sound during the logo animation, which seems like it's probably related. I tried these in 0.215 also with no success. I thought maybe these were working before the SNES driver had some regressions around then? Couldn't go back farther since things no longer compile on my Mac :(
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version	0.215
Affected Sets / Systems	snes, snespal [mk2 and clones]

Attached Files

No.19118 Tafoid Administrator Jul 22, 2021, 23:39 edited on: Jul 23, 2021, 09:43	From my local SNES bugs document - known. Mortal Kombat 2 (Jpn, Euro) - mk2, mk2j - Regression September 25, 2019 https://github.com/mamedev/mame/commit/55bda8eb98feabf0c8b119503d9260b2e512c2e5 After Sculptured Software Logo, Black Screen/Hang. Oddly, the US version (mk2ua) works Sadly, there are other issues with that SNES commit played a part in but also fixed some things. Someday it will even out.
No.19119 kmg Senior Tester Jul 23, 2021, 00:14 edited on: Jul 23, 2021, 00:16	You may wish to update your note. I replaced mk2u in a PR you merged a few days ago. Now it is mk2ua alone that is working. FYI, my pending PR has mk2up which is bit-for-bit identical to mk2u, and for now I marked it as unsupported. I thought it better to report the general issue here rather than going back and mark all the other clones unsupported at this time.

No.19118

Tafoid

Administrator

Jul 22, 2021, 23:39

edited on: Jul 23, 2021, 09:43

From my local SNES bugs document - known.

Mortal Kombat 2 (Jpn, Euro) - mk2, mk2j - Regression September 25, 2019
https://github.com/mamedev/mame/commit/55bda8eb98feabf0c8b119503d9260b2e512c2e5
After Sculptured Software Logo, Black Screen/Hang. Oddly, the US version (mk2ua) works

Sadly, there are other issues with that SNES commit played a part in but also fixed some things. Someday it will even out.

No.19119

kmg

Senior Tester

Jul 23, 2021, 00:14

edited on: Jul 23, 2021, 00:16

You may wish to update your note. I replaced mk2u in a PR you merged a few days ago. Now it is mk2ua alone that is working.

FYI, my pending PR has mk2up which is bit-for-bit identical to mk2u, and for now I marked it as unsupported. I thought it better to report the general issue here rather than going back and mark all the other clones unsupported at this time.