P.S. My first IIe was a clone made by Multitech - the MPF-III. It has
a 40 track 1/2 height 40 track direct drive FDD with an adapter board
that converts the Apple 20 pin bus into the standard 34 pin bus. It
uses a couple of one-shots and a PAL to do the conversion.
My solution is similar, except it uses modern HD drives and media.
Everything is packed into a single CPLD (with stabilized oscillator)
which does the pulse conversions between 250 and 500kbit/sec.
I should have shown in the videos that the converting board is plugged
into the regular Disk ][ controller and it's not a slot device with
it's own firmware, etc.