[Coco] Compatible RS MPIs to Coco 3

[Michael Kline]

Hi Jeff,

Thanks for the info. What chip do you swap out and are they available? 
Probably EPROM now-adays.

Michael



On 26/12/2020 09:46, Jeff Teunissen wrote:
> 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
>>
>>
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