[Coco] Tandy Controllers

[Arthur Flexser]

I think the FD-502 had a 28-pin ROM socket vs. a 24-pin one on the FD-501,
no?

Art
On Mon, Feb 21, 2011 at 10:32 PM, Brian Blake <random.rodder at gmail.com>wrote:


> And IRCC the FD-501 & 502 are the same, one (FD-501) has gold connectors
> the
> other does not...
>
>
>
> Brian
>
>
> On Mon, Feb 21, 2011 at 9:37 PM, Steve Ostrom <smostrom7 at comcast.net>
> wrote:
>
> > How many different disk drive controllers did Radio Shack/Tandy release?
>  I
> > think there are at least 5.  Two long ones numbered 26-3022 and 26-3029,
> as
> > well as three short ones numbered 26-3129 (FD500), 26-3131 (FD501) and
> > 26-3133 (FD502).  Were there significant differences between each of
> these?
> > Were they renumbered because of ROM differences?  I think the long vs.
> short
> > had different power requirements (12v vs. 5 v?).
> >
> > -- Steve --
> >
> >
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