My interest is in recreating the data, ( recovering a Unistride UNIX install), I have no intent to use the emulator.
I will upload the zipped transitions file. This comes from a Toshiba MK53FB diskdrive ( 830 cyl, 5 hds).
Still have to convince a Micropolis 1335 ( the well-known stiction problem) and a ST4096 ( broken flexcable ? ) to cooperate...
Basically it uses a Signetics 2653N CRC chip for errorchecking.
Stride 400, the Sage's successor, does not seem to have a CRC chip, can't find one on the board . Schematics are not available, but it looks very similar to the Sage solution.
Source code for MFM disk access exists for both Sage and Stride machines, if that is of any help.
If you have time to look at this, I'd appriciate it. And at the same time I understand that ir really is an edge case. How many Stride disks are left anyhow ?
Thanks for designing this great tool,