Does a circuit exist for attaching a standard shugart / PC drive to an Apple 2 via a Disk II card ?
I have seen pictures on the net of one Teac drive that seemed to have a converter board with a couple of LS type chips to convert the 20 pin disk II signals to the standard 34 pin shugart signals. Does a schematic of this card exist, it looked relatively simple.
here : http://www.classic-computers.org.nz/blog/2009-03-23-teac-apple-disk-drive-repairs.htm[url]
Looking at the two interfaces, it seems that the main problem would be converting the Apple 4 wire stepping signals to the shugart step and direction signals.