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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08507 Media Support Major Always Nov 6, 2022, 17:33 12 days ago
Tester pnp2084 View Status Public Platform MAME (Official Binary)
Assigned To pnp2084 Resolution Fixed OS Windows 10/11 (64-bit)
Status [?] Resolved Driver
Version 0.249 Fixed in Version 0.250 Build 64-bit
Fixed in Git Commit 87df951 Github Pull Request # #10514
Summary 08507: trs80l2, trs80m3: DMK does not support FM or mixed FM/MFM tracks
Description The DMK format only supports MFM tracks but actual DMK files can support FM and even mixing FM and MFM encoding on the same track.
Steps To Reproduce The attached DMK files are mixed format and flopconvert will fail to convert them properly, e.g.
flopconvert auto mfi sledge13.dmk sledge13.mfi
mame trs80l2 -flop1 sledge13.mfi

sledge13 and spook_house should boot on both trs80l2 and tr8s0m3. SuperUtility-1su will only boot on trs80l2.
Additional Information
Github Commit
Flags
Regression Version
Affected Sets / Systems trs80l2, trs80m3
Attached Files
zip file icon fm_and_mfm.zip (151,141 bytes) Nov 6, 2022, 17:33 Uploaded by pnp2084
Mixed FM/MFM format DMK files
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Notes
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No.20780
pnp2084
Tester
Nov 6, 2022, 17:40
A pull request to fix the problem (and add DMK support to trs80l2)
https://github.com/mamedev/mame/pull/10514