[Coco] Q on the extra chip socket the 2 meg kit uses

[Brian Goers]

On 7/9/2014 10:00 AM, Gene Heskett wrote:
> Greetings;
>
> My coco3 has died again.  No clue if its oxidized gime or poor contact in
> the cpu socket.
>
> That, in addition to my needing to design & make a new bit-banger path,
> somewhere in the salt to 6821/22 is a blown chip so my DW is DOA.  That I
> probably am responsible for as internal diagrams on the SALT chip are lost
> in the sands of time. The problem?  I fed it with the full 12 v + & - from
> my old XT PSU that runs everything, under normal use, running on 8 volts
> in the OEM design, a feedback loop in the DW from a miss-configure would
> not heat things up and destroy something, but on a full +-12volts, the
> salt and whatever got too hot and expired. New salt didn't fix it, so I
> need to start with a fresh 6821/22 and make a MAX-232 like interface for
> the bit-banger.  Once thats done, the salt chip can be removed.  Thats a
> job for eagle I think.
>
>
I know I have several 6821 and maybe a 6822. If you wish I'll mail one 
out to you.
Just let me know.

-- 

  Brian Goers     Vice President of Special Events
                     http://glensideccc.com/newindex.shtml