[Coco] CoCo Recreation motherboards

[Camillus Blockx]

there is all ready an pincompatible solution, see coco archive or google


Op vr 8 jul. 2022 08:14 schreef Andrew via Coco <coco at maltedmedia.com>:

> Cool! I recall running across this project earlier, but it's nice you've
> pulled 'em out into their own section. I have an idea for a future
> project that I was thinking about using a CoCo 2 motherboard for; this
> might be the best way to do that (instead of cannibalizing a real CoCo).
>
> Allen mentioned the "unavailability" of the GIME - but another that is
> seemingly "unavailable" (not only that, but today I was looking around
> for it, and couldn't even find a datasheet) is the "SALT" chip.
>
> It's used on the CoCo (I think all models) mainly for voltage
> translation for the bit-banger port, but also for voltage regulation. A
> somewhat strange "dual-purpose" chip...
>
> I think we need something to replace those functions; the voltage
> regulation would be fairly easy, I think (plenty of options for that
> part); maybe the voltage levels for the bit-banger could be done via a
> TTL to RS-232 converter chip?
>
> It would be an interesting experiment to take the board and put
> everything on there except for that chip, and try to hack something else
> in it's place. I'm sure it can be done, it's just a question of what can
> (or should) be used?
>
> Andrew L. Ayers
> Glendale, Arizona
> phoenixgarage.org
> github.com/andrew-ayers
>
> On 7/7/22 10:19 PM, coco-request at maltedmedia.com wrote:
> > Re: [Coco] CoCo Recreation motherboards
>
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