34777Re: [midatlanticretro] S100 Floppy Controller
- Mar 17, 2014On 03/17/2014 04:16 PM, B Degnan wrote:
> >> A while back I posted about an IMSAI 8080 system I acquired and myIt definitely is, but when the H-17 was developed, there were several
> >> efforts to get it back into working order. The system contains a
> >> floppy controller that I have not been able to identify
> > Interesting! Ohio Scientific took the same approach with their floppy
> > system, using a UART to encode/decode the datastream. In their case
> > it was a Motorola 6850.
> Heath did the same with the H-17 floppy subsystem for the H-8. I've
> always thought it was a bit, erm, "lowbrow", but it works.
>> What controller "brow" was IBM using when they originally introduced
> the "floppy disk" drive with S/370? Curious ...
> I think it's easy to apply today's perspective and knowledge to
> yesterday's problems. It's an evolution more so than skill/brow don't
> you think?
floppy controller ICs available. They were just expensive. ;) Most
other companies (as you know) used 'em.
Dave McGuire, AK4HZ
New Kensington, PA
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