Date   : Sun, 19 Aug 2007 23:52:42 +0100
From   : julesrichardsonuk@... (Jules Richardson)
Subject: Re-using cheese wedge cases

Someone asked about this and I've lost track of who it was...

All of the official copro boards just need a single +5V supply. That means 
that any copro wedge case should be re-usable with any copro - but in some 
cases you might need to lengthen the power supply wires to reach (e.g. 32016 
power input is top-right, but on the 6502 it's top-left).

The Prestel adapter has its power supply directly on the board, so doesn't 
have a supply at the front of the case like the copros. The Teletext adapter 
does have a supply in the case front, but has some extra lines (+40V and +12V 
I think, without going and checking). I suspect its +5V line is capable enough 
of driving a copro, with the other lines not being used.

I think (without going to look) the IEEE adapter has the bulk of the PSU on 
the IEEE board itself, and has the transformer bolted to the bottom-middle of 
the case. Econet Bridge I think was just the same supply as used for the 
copros - i.e. +5V.

So, unless you have a Prestel or IEEE case, the supply should be good enough 
to re-use the wedge and drop a copro board into.

cheers

Jules