P112

[Fred Cisin]

>> Should be fun.
>> Is the FDC a 765 variant?
>> or a WD 179x variant?

On Sun, 8 Apr 2018, Bill Gunshannon via cctalk wrote:
> SMC 37C651.  Supports  500 Kb/s, 300 Kb/s and 250 Kb/s Data Rates.
> Something else we lost with the PC.

That's a 765 variant.  Made by several companies, even WD!
Most of those can handle FM/"single density".

5.25" single density is 125K bps
It might support it,> Should have left it the way it was and have people 
set the Drive Select
> themselves.

in spite of not mentioning it.