Re: Hardware musings

["David Wilson" <mcs6502@gmail.com>]

Ed Eastman wrote:
> Anyone want to make a hack to the disk II to put an index hole reader
> circuit in to alleviate the track synch capture issue?  Maybe add it to
> the EDD board and modify the program a bit?  Again, on a IIgs this has
> potential to becomes a wee bit more powerful.

One of my MPF-III disk drives is actually a standard 5.25" half height
drive (direct drive spindle motor) with an adapter card to convert the
Apple 20 pin Disk ][ interface to a standard 34 pin one. The drive has
track zero sensing (no head banging at power up) and will (I expect)
have an index sensor as well. Just need some way to get the index
pulses out and into the computer (perhaps use the write-protect line
instead?)