FYI, the MFM/Modified Frequency Modulation is also described in the original Shugart SA800/SA801 8-inch floppy diskette drives manuals.
The OEM Manual describes the basic MFM information and the Maintenance Manual contains the PCB layouts, logic information and the schematic diagrams. The first two links are to the OEM/Theory of Operation Manual and the third link is to the Maintenance Manual.
BTW, I still have two SA800 drives from my old CompuPro 8/16 S-100 system that I thought would be nice to play with again when I had a moment but I've no 8" floppies either single or double density. Does anyone know where one can get some?
The OEM Manual describes the basic MFM information and the Maintenance Manual contains the PCB layouts, logic information and the schematic diagrams. The first two links are to the OEM/Theory of Operation Manual and the third link is to the Maintenance Manual.
https://hxc2001.com/download/datasheet/floppy/thirdparty/Shu...
http://avitech.com.au/mm-files/dilog-dq419/SA800-801_Diskett...
http://bitsavers.informatik.uni-stuttgart.de/www.computer.mu...
BTW, I still have two SA800 drives from my old CompuPro 8/16 S-100 system that I thought would be nice to play with again when I had a moment but I've no 8" floppies either single or double density. Does anyone know where one can get some?