NOS Bare Boards: What to do? - test-drb@ccmp.vtda.org

12 Apr 1998

...
 > From: "Jeff Kaneko"
&lt;Jeff.Kaneko(a)ifrsys.com
>
> Guys:
>
> Afer looking at a number of responses, Uncle Roger's position 
> seems the most logical to me (besides, one other person suggested 
> this also).  I think I'll buy that parts to build this, and just keep 
> it until needed.
> 
> Building it won't be a priority, though. The MP-A wasn't exactly the 
> best SS-50 CPU available.  I have a NOS Thomas Instruments Super CPU, 
> that I've wanted to build for years.  Compared with other S-50 boards 
> of that era, it had alot of cool features.  I am working on getting a 
> couple of scarce parts for its companion video board.
>
> Jeff 
From:  Bill Yakowenko &lt;yakowenk(a)cs.unc.edu&gt;

...
 One other thing, before soldering stuff onto that
board, make a copy
of it.  (Do photocopiers make decent prints of bare boards?)  Once
a board has chips soldered onto it, it can be a pain to figure out
which things connect to what.  Having a bare-board print could help
a lot in reverse-engineering the schematic (although I suspect there
are still MP-A schematics to be had out there).  And who knows, you
might someday want to clone that board.

	Cheers,
	Bill. 
There are not only schematics, but assembly instructions and a three
color print showing the top traces in red, bottom traces in blue, and
component placement in black.

I picked an MP-Ab bare board and documentation at a hamfest a long
time ago and never used it having gone with Percom's SBC/9 CPU board
and Percom's Electric Window video board.

If anybody absolutely needs copies of the docs, then I will see what
I can do.

Mike