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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
07911 Misc. Minor Always Mar 21, 2021, 02:21 30 days ago
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.
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2
User avatar
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.
User avatar
No.18592
Augusto
Tester
30 days ago
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.