[Coco] Compatible RS MPIs to Coco 3

[Jeff Teunissen]

No _unmodified_ Multi-Pak Interface is compatible with the CoCo 3. I
believe that there was a time when Tandy took all of the 26-3124 "new"
MPIs they had in their warehouse and upgraded them to work with the
CoCo3, resulting in 26-3124A.

So I guess there's one model of MPI that's CoCo3-compatible out of the
box, the pretty-rare 26-3124A. All other models are incompatible
unless modified. The old 26-3024 MPIs are pretty easy to upgrade, you
replace one chip with another. The upgrade to the newer 26-3124
version is more involved, and probably shouldn't be done unless you're
pretty confident with a soldering iron.

On Sat, Dec 26, 2020 at 10:18 AM Michael Kline via Coco
<coco at maltedmedia.com> wrote:
>
> Happy Holidays everyone:
>
> If memory serves, there were some RS MPIs that were not compatible with
> the CoCo 3...
> Thus/then; which Radio Shack MPIs ARE compatible with the CoCo 3? Is the
> 26-3024 one of the newer ones that works with the 3?
>
> Thanks!
> Michael
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco