07911: some CHD are with wrong checksum

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07911	Misc.	Minor	Always	Mar 21, 2021, 02:21	Mar 23, 2021, 00:30

Tester	Augusto	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	No change required	OS	Other
Status [?]	Closed			Driver
Version	0.229	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	07911: some CHD are with wrong checksum
Description	For some files CHDs version 5 are being used CHD version 4 when loading a game. MAME use CHD v4 checksum when loading the games CHDs below bassang2\865jaa02 btchamp\btchamp fbait2bc\865uab02 fbaitbc\765uab02 fbaitmc\889ea fghtmn\918xxb02 heatof11\heatof11 hypbbc2p\908a02 konam80s\826eaa01 pnchmn2\a09jaa02 totlvicj\639jad01 totlvicu\639uac01 If exporting an listxml to use in rom managers (CLRMAMEPRO) when doing fix all correct CHDs V5 will be deleted. Perhaps wrong checksum for others CHDs.
Steps To Reproduce
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No.18589 Tafoid Administrator Mar 21, 2021, 06:41 edited on: Mar 21, 2021, 06:42	The cases you mention are very likely games which need to be re-acquired and re-captured as Version 5 to take in account for minor changes to the format. You can tell CLRMAMEPRO to disregard the mismatch and not display them when scanning: Load profile > Settings button > Compressor button > Uncheck "List CHD version mismatches during scan" In short, there is no bug here. All CHDs you listed are the best anyone has at the moment and are what MAME expects. They are in need of REDUMPING (status="baddump" in XML output) to make proper Version 5 archives.
No.18592 Augusto Tester Mar 22, 2021, 23:01	Only reporting not demanding help, but thanks for your reply. have others chds in version 5 needing redump. converting the chds bassang2, btchamp, fbait2bc, fbaitbc, fbaitmc, fghtmn, heatof11, hypbbc2p, konam80s, pnchmn2, totlvicj and totlvicu to v5 is less file size and not problems loading.

No.18589

Tafoid

Administrator

Mar 21, 2021, 06:41

edited on: Mar 21, 2021, 06:42

The cases you mention are very likely games which need to be re-acquired and re-captured as Version 5 to take in account for minor changes to the format.
You can tell CLRMAMEPRO to disregard the mismatch and not display them when scanning:
Load profile > Settings button > Compressor button > Uncheck "List CHD version mismatches during scan"

In short, there is no bug here. All CHDs you listed are the best anyone has at the moment and are what MAME expects. They are in need of REDUMPING (status="baddump" in XML output) to make proper Version 5 archives.

No.18592

Augusto

Tester

Mar 22, 2021, 23:01

Only reporting not demanding help, but thanks for your reply.
have others chds in version 5 needing redump.
converting the chds bassang2, btchamp, fbait2bc, fbaitbc, fbaitmc, fghtmn, heatof11, hypbbc2p, konam80s, pnchmn2, totlvicj and totlvicu to v5 is less file size and not problems loading.