[Coco] Another MPI on fleabay

[Gene Heskett]

On Wednesday 11 March 2015 16:54:15 Bill Pierce via Coco wrote:
> I looked at the pics on ebay and the jack is near the AV outputs. My
> jack is near the power switch (opposite end). Gene has the 2 meg
> upgrde and could say where the jack is located on his as they may be
> different. Power is needed on both ends as there's a memory board over
> the 512k upgrade (left from font) and a dat board over the 6809 (right
> from front), so the PS could enter either side and be convenient. Mine
> has a jumper wire going from one board to the other. Tony D, may have
> changed the lo0cation of the jack for some reason. Then it may not be
> a 1 or 2 meg upgrade at all.... :-(

Bil: My 2 meg T.D. kit, uses 1 meg CMOS simm modules, and I believe it 
was installed prior to my converting it all to run from an old XT power 
supply. AFAIK, this kit didn't need an extra supply.

I'd go down and verify that by looking at it, but I've about beat me to 
death today, and do not have another trip down and back up the basement 
steps left in me.  Getting old is NOT for wimps.

I'll try and look to see if I carried it downstairs when I ran across the 
peach envelope with the docs that I just ran across 5 or 6 days ago 
while searching for old bank statements in this midden heap.  Just found 
it, about 3 feet away.  Title is "Inside DISTO's 2 - meg Kit", so this 
isn't the install docs.  The circuit theory is heavy with Tony blowing 
his own horn like he is the only one that knows how to use an 
oscilloscope. But the text and schematic seem to agree. The vcc supply 
comes up from the motherboard, on the same pin a 512K card would use.  
There is not, in the text or in the schematic, any mention of an 
external power supply.  So I don't think the 2-meg kit needed more than 
the coco 3 can supply on its own. 

Cheers, Gene Heskett
-- 
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