09150: many midway/williams.cpp games: memdump command causes MAME freeze

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
09150	Debugger	Critical (emulator)	Always	20 days ago	5 days ago

Tester	jman	View Status	Public	Platform	MAME (Official Binary)
Assigned To	galibert	Resolution	Fixed	OS	Windows 10/11 (64-bit)
Status [?]	Resolved			Driver	midway/williams.cpp
Version	0.276	Fixed in Version	0.277GIT	Build	64-bit
		Fixed in Git Commit	4faede1	Github Pull Request #

Summary	09150: many midway/williams.cpp games: memdump command causes MAME freeze
Description	memdump command causes MAME freeze in the following midway/williams.cpp games. - stargate - conquest - robotron and clones - joust and clones - bubbles and clones - splat - sinistar and clones - playball - blaster and clones - spdball - alienar and clones - lottofun no problem in the following games. - defender and clones - mayday and clones - colony7 and clones - jin - mysticm and clones - tshoot - inferno - joust2 and clones
Steps To Reproduce	1) Execute MAME with "mame stargate -debug" 2) input "memdump" on debugger 3) MAME will freeze
Additional Information
Github Commit

Flags
Regression Version	0.265
Affected Sets / Systems	many midway/williams.cpp games

Attached Files

No.23176 Robbbert Moderator 20 days ago edited on: 20 days ago	Confirmed, instant freeze. MAME not responding. After forceably ending MAME, found a 0-byte file memdump.log
No.23177 Osso Moderator 20 days ago	They seem not like the memory view m_rom_view being smaller than the m_videoram memory share. If you make them the same size (bumping up the memory view size or reducing the memory share size), then memdump works.
No.23178 cuavas Administrator 19 days ago	OG should probably look at it. A hang inside dump_maps isn’t good if it’s an address space configuration that passes validation.
No.23223 galibert Developer 5 days ago	Fixed with 4faede1