06049: ibmpcjr [kingqst, mouser, pitfall2, scubavnt] : some softlist games are broken

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06049	Gameplay	Critical (emulation)	Always	Oct 23, 2015, 23:09	Oct 24, 2015, 04:51

Tester	kazblox	View Status	Public	Platform	MESS (Official Binary)
Assigned To	crazyc	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	pc/ibmpcjr.cpp
Version	0.166	Fixed in Version	0.167	Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06049: ibmpcjr [kingqst, mouser, pitfall2, scubavnt] : some softlist games are broken
Description	Some of the games in the ibmpcjr softlist seem to crash instantly or cause major graphical glitches. All of these bugs listed below did not happen when I tested MAME 0.144 in PCjr emulation. Mouser- Maze is invisible Kings Quest- Instant crash with pink stripes Pitfall II- Crash with pink stripes. A string "C123456789" appears and moves around randomly but that's it. ScubaVenture- Pink stripes. Graphics majorly freak out along with collision if you start the game
Steps To Reproduce
Additional Information	Regression; Tafoid has already spotted a possible point, between 0.148u1 and 0.149.
Github Commit

Flags
Regression Version	0.149
Affected Sets / Systems	ibmpcjr [kingqst, mouser, pitfall2, scubavnt]

Attached Files

No.12083 Tafoid Administrator Oct 23, 2015, 23:41	Traced issue to a 2 day period of dev where the I strongly believe the only change of note is: https://github.com/mamedev/mame/commit/e098aab416851304b8fd12b126c6ec98aeca6742 "Modernized the PIT8253 device." - June 3, 2013
No.12084 crazyc Developer Oct 24, 2015, 03:47	Fixed in https://github.com/mamedev/mame/commit/3d746320c94a6c6d9d0b937c2b70b7ed54bcb539 Note loading takes a rather long time in kings quest.
No.12085 kazblox Tester Oct 24, 2015, 04:51	Fixed alright ;)