On Wed, 9 Aug 2017, Mike Stein via cctalk wrote:
Interesting reading here under disk formats:
https://en.wikipedia.org/wiki/86-DOS
Sounds like there were two Tarbell controllers, single and double
density but both single-sided ?
NO
https://en.wikipedia.org/wiki/86-DOS#Disk_formats
includes a 1232K DSDD 8" format, with Tarbell 1791/1793
Also sounds like the FAT12 disk formats were not quite MS-DOS compatible...
Well, the LAST ones, . . .
even then, "modern" MS-DOS handles a VERY limited repertoire of the FAT12
MS-DOS formats.
Do you have access to a flux-transition board (CP, Cat-weasel,Kryoflux,
etc.)?