6 Jan
2013
6 Jan
'13
5:12 p.m.
Before OSI, AES was using a USRT as part of its floppy controller, as
did several other manufacturers (I think Zilog did also on the dev systems).
You could also occasionally run across Fairchild Macrologic CDC
generators in the old gear.
The big difference between the USRT-based and genuine floppy controllers
was the bit ordering within a byte.
The first WD floppy controllers were seriously expensive. Apparently,
initial yields on them were pretty low.
--Chuck