[Color Computer] [coco] coco1 on ebay

[Gene Heskett]

On Monday 25 July 2005 01:33, James Diffendaffer wrote:
>The problem with these upgrades is that not much was written to take
>advantage of them before the CoCo3 came out so they kinda became
>obsolete.  The CoCo3 banks memory very different from this so you
>can't even use it from OS-9.
>The Rainbow issue I mentioned will be with the Rainbow archive disk
>when it comes out.
>
>The Y cable is just a connector to plug into the coco cartrige slot,
> a 40 line ribbon cable and two or more 40 pin slot connectors to
> plug in hardware.  Only 1 device can have ROMs or they will
> interfere with each other.
>You also have to be carefull not to overload the CoCo power supply.
>That's why the multipack was introduced in the first place.

It has the additional problem of only being able to use 1 of those 40 
pins for ground.  The MPI, and all the cartridges I've seen, all make 
heavy use of the ears on both sides of the finger pattern engaging 
into the ground clips on both ends of the socket on the motherboard.

Without that extra grounding, even a single card plugged into this Y 
cable always resulted in a miss-fire and crash in short order for me.

>--- In ColorComputer at yahoogroups.com, Basil Fitze <basilf at s...> 
wrote:
>> Hello,
>>
>> I am still looking for the article for the Y cable I know it was
>> in Rainbow but  can't remember the month  or the year. If anyone
>> has it
>
>and
>
>> or the 512K upgrade  would  greatly appreciate a copy of each.
>>
>> --
>> Basil V. Fitze
>> Computer Consultant
>> basilf at s...
>> ICQ# 68765026
>
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>
>
>

-- 
Cheers, Gene
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