04121: Debugger cannot set 8bit registers with 'do' command

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
04121	Debugger	Minor	Always	Nov 17, 2010, 11:56	Dec 12, 2010, 13:02

Tester	Robbbert	View Status	Public	Platform	MAME (Unofficial Binary)
Assigned To	Robbbert	Resolution	Fixed	OS	Windows XP (32-bit)
Status [?]	Resolved			Driver
Version	0.140u1	Fixed in Version	0.140u3	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	04121: Debugger cannot set 8bit registers with 'do' command
Description	First noticed in MESS at r9497 (sync with MAME), looks like it could be MAME r10560. Affects multiple CPUs. I only checked a few, for example 8088 cpu cannot set AL register. Z80 cannot set any 8bit register (a,b,e for example). M6800 cannot set A,B,X registers. Cross-checked with the 'vanilla' build of MAME found in the 140u1 release thread at Mameworld. Checked 'pacman' game and 'cball' game, problem exists.
Steps To Reproduce	To reproduce with MAME. MAME pacman -debug Try setting the A register: do a=8 Error in assignment expression. The little arrow points at the letter o. MAME cball -debug Try setting any of a,b,x registers to anything. Same error.
Additional Information
Github Commit

Flags
Regression Version	0.140u1
Affected Sets / Systems

Attached Files

No.06909 Robbbert Moderator Dec 12, 2010, 09:59	This is fixed in MESS r9762. It was caused by a buffer overflow in tagmap_hash in tagmap.h.