Was that uPD 372 the version that handled hard-sectored diskettes as well?
I remember they had a uPD 371 as well, but I'm not remembering whether it
was a tape controller or a hard-sectored disk interface controller. I seem
to remember something of that sort being available in the mid-late '70's.
About that OASYS, I thing they ended up ground-ruling that out for the older
systems and dedicating their own implementation strictly to a later system
they brought out, in keeping with the trend toward integrated packaging,
called the BYTEMASTER, (and soon nicknamed the master-byter) probably
because of the long delay between prepaid order and delivery. I'm not even
certain they actually ever shipped any working units. It was an attractive
package, though.
I remember Robert Suding once telling me that the reason they couldn't do
any better with their FDC's was because the 74S124 (VCO) was too expensive.
Now, I used it from time to time and don't rmember ever paying more than $2
for one. Of course, you never know how long before then the DG people were
trying to buy the things.
Dick
----- Original Message -----
From: ajp166 <ajp166_at_bellatlantic.net>
To: <classiccmp_at_classiccmp.org>
Sent: Monday, October 16, 2000 7:40 PM
Subject: Re: Who collects (reads the mailing list...?) vintage computers
> From: Eric Smith <eric_at_brouhaha.com>
> >The originally shipped a single-density FDC for 8-inch drives. It used
> >some NEC single-density only FDC chip that was *NOT* related in any way
> >to the uPD765 or the Intel 8271 or 8272. I don't recall the part
> number,
> >but it was almost certainly uPD and three digits.
>
>
> The uPD372... I have two of them.
>
> Allison
>
>
Received on Mon Oct 16 2000 - 20:54:48 BST