On 05.05.2013 10:39, Michael J. Mahon wrote:
Ok, thx, are these signals barely just signals from a floppy drive shugart bus ? I mean can I take a non-Apple floppy disk drive like a TEAC FD55A drive, and "wire" it in an appropriate way to a 19pin connector ?Not at all. They are signals from an Apple Disk ][, which has a much lower-level interface than the SA390/SA400 from which the Disk ][ was derived by throwing out the digital control circuitry of the standard product and leaving only a simplified analog board.
I was not asking for a comparison of Shugart Bus vs Apple II Disk Drive Bus.In 1985, I owned an "Apple II compatible", and I am 100% sure I didn't own any original Apple II Disk Drive.
Instead, these Floppy Disk Drives were non Apple 3rd party ones.And they all had only a Shugart Bus (34pin), the flat cables were wired in a way it was compatible with the simple Apple Disk Controller (it was not an "Erphi" or another more sophisticated one). I have also seen already on Ebay some non-Apple Floppy Disk Drives with a 19pin connector (with a flat cable, which seemed to be selfmade, it was not a round cable with an encapsulated plug/connector). My main goal was to make my own cable for my LC Apple IIe Card (not really an Y-cable, instead just the floppy, and no, I do not need any "chain" for more than one drive). Guess I have to figure it out by myself, because nobody made this cable before :-(