[Coco] MPI help needed

[Gene Heskett]

On Tuesday 10 June 2014 22:59:12 Bill Nobel did opine
And Gene did reply:
> That would suggest the switch itself to me, as the slot doesn’t seem to
> switch.
> 
> Bill Nobel

Bill, Tony;

I have been under the impression, could well be wrong, that the switch is 
read only at power up. What happens if the switch is moved and the power 
is cycled?  Otherwise you have to poke $FF7F, with $00 for slot 1, $11 for 
slot 2, $22 for slot 3, and $33 for slot 4.  IIRC you should be able to 
read back what you wrote to $FF7F.

In that unmodified one, it will also ghost to $FF9F, which is in the GIME 
image of a coco3.  Near instant crash. :(
> 
> On Jun 10, 2014, at 8:47 PM, tonym <tonym at compusource.net> wrote:
> > OK gents...
> > 
> > Need an assist... Pulled out an old grey -3024 (not yet modified) out
> > of the mothballs. Plugged it in, into a coco3. Can't get anything
> > but slot 1 to work, no matter WHAT slot the switch is on.
> > 
> > Using a rompak, tried all 4 slot, using their respective switch
> > position, only slot 1 worked.
> > 
> > Putting switch on slot 2, pak works in slot 1, same thing for switch
> > to slot 3, slot 1 works, same with switch set to slot 4, slot 1
> > works.
> > 
> > Any ideas?
> > 
> > Tony
> > tonym at compusource.net


Cheers, Gene Heskett
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