03175: cham24: Game doesn't start correctly

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03175	Crash/Freeze	Critical (emulation)	Always	May 13, 2009, 01:03	Aug 6, 2009, 15:57

Tester	Tafoid	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Fixed	OS	Windows 2000
Status [?]	Resolved			Driver	nintendo/cham24.cpp
Version	0.131u1	Fixed in Version	0.133u2	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	03175: cham24: Game doesn't start correctly
Description	All you see is a gray screen and the normal menu which is presented with the selectable games is not shown. Even if this is a game_not_working, it's a clear and major regression.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version	0.130u4
Affected Sets / Systems	cham24

Attached Files

No.04429 etabeta Developer Jun 1, 2009, 16:37 edited on: Jun 1, 2009, 17:51	This is the same issue affecting MESS emulation of nes/famicom. Among other things, the old PPU code required a VROM region to be set or not at init, depending on the mapper of the game. The new code passes the region tag in the device interface, hence such a choice cannot happen anymore (because MAME device interface cannot be dynamically chosen at init). But this is only part of the MESS regression and I don't think justifies the cham24.c problem. Long story short, the old code was not really suited the device implementation and probably a rewrite is needed. Also, a few pc10 games are probably affected as well

No.04429

etabeta

Developer

Jun 1, 2009, 16:37

edited on: Jun 1, 2009, 17:51

This is the same issue affecting MESS emulation of nes/famicom.

Among other things, the old PPU code required a VROM region to be set or not at init, depending on the mapper of the game. The new code passes the region tag in the device interface, hence such a choice cannot happen anymore (because MAME device interface cannot be dynamically chosen at init). But this is only part of the MESS regression and I don't think justifies the cham24.c problem.

Long story short, the old code was not really suited the device implementation and probably a rewrite is needed.

Also, a few pc10 games are probably affected as well