I have dumped some PC98 disk images with a Kryoflux, both 5.25" and 3.5". The 5.25" images open fine in the Track Analyzer and MFM encoding is detected, but the MFM format is not detected for the 3.5" disk images.
I suspected this was caused by the speed of the floppy drives where I dumped the disk (360rpm for 5.25", 300rpm for 3.5") while original PC98 drives both use 360rpm. But I could not find a way to fix this in HxC.
I found the tool pfi.exe in the PCE tools at http://www.hampa.ch/pub/pce/pre/pce-20201020-85c21aca/
and was able to fix the raw 3.5" image files with this command line:
Code: Select all
pfi.exe source00.0.raw -p scale 0.8333 dest00.0.raw
After this change, the tracks open fine in the Track Analyzer and MFM is detected.
Is there a way I can fix such images directly in HxC? Should it automatically detect the drive speed and adjust in case this is a bug? Or is there a way for me to fix the speed inside HxC? I tried to change the rpm in the Edit tools without success.
Note: I have tested using version 188.8.131.52