[Coco] Multipack info

[Bruce W. Calkins]

> This is the first I have heard of this. Must be that someone used the
> reserved location for something they shouldn't have.......
Are you referring to the switch or the tales of flakey CoCo 1/2s with the
upgraded Multi-Pac interface?  Unfortunately with all the computer crashes
I've recovered from, I still have files in need of recovery and resorting.
I can't quote a source on the flakey CoCo 1/2 on a upgraded MPI at the
moment.  It might be just a "understanding"?

I know I did find a description for a switch for this once.  It would seem
simple, given what little I needed to do to install the upgrade in my
26-3124.  Certainly not as hard as the "simple" TTL detector I need to
design for class Tuesday to flag illegal BCD values.  ;)

Bruce W.


> Rule Number 1: Foolow the spec if there is one.....In this case there
> was......
>
> If you find it, I would love to read it.
>
> Thanks,
>
> Mark
>
> Quoting "Bruce W. Calkins" <brucecalkins at bellsouth.net>:
>
> > Stock, it works well with the CoCo 1 and 2.
> > To use it with the CoCo3 it needs a addressing modification.  Not hard,
just
> > a 74LS10 IIRCC with some short wires and a trace cut.  Unfortunately
this
> > makes it flakey with the CoCo 1 and 2.  Somewhere on-line somebody wrote
up
> > a modification that allowed a switch, so you could swap it back and
forth.
> >
> > Bruce W.
> >
> >
> >> I am getting back to using  my coco3. I have a Tandy Multi-Pack  Model
> >> 26-3124 S/N 2007430.
> >>
> >> Will this unit work with the coco2 or coco3 without causing damage?
> >>
> >> Thanks
> >>
> >> John Chasteen