Looking for an 8 bit FDC...

Ah huh, what? Who does 128byte MF sectors??? If you really have to it's possible to tell a 765 that it's a short sector in mfm. As to non standard address marks that was a tandyism and 765 "read deleted" works. If you can find one 9216 is good or the 9229. IF not the latch/prom is a synthetic PLL (which is the logic in the 9216 etal) and very good with less headaches than a real PLL. In general a 765A on a late XT or early AT class FDC is the trick more possibilities than not. Those that it can't be require extraordinary effort. There are few reasons that seem to abound for do alls. Those be "archives" and I want to run a zzxxyy sim on a PC. Those that most often archive have a host that can read it. The other case is obvious. However, the case I run into the most is I wish to run ABC on Northstar* under CP/M and need to get it on to the AmproLB. For that the Ampro connected to the serial port of the NS* and MDM740 neatly sidesteps the "format problem" and once on the AmproLB I can run DOS and write it to a 720K 3.5" floppy under (DOS/WIN/NT/Linux) and run it under MyZ80 or whatever. Allison