 01-partial.JPG This is a partial used board. |
 02-blank.JPG This is a board with
all programmable bits intact. |
 03-programmed.JPG programmed board
|
 06-rom-stack.JPG edge on view
|
 04-rom-top.JPG top view
|
 05-rom-side.JPG sense board view
|
System. It is evidently a system which was microprogrammed,
since this is is a ROM for it. It may have been a macro level
machine with programming coming from this stack, and having
core as well, in the same space. No information is available as
to what the machine was that it comes from.
The first two boards show how it could have been programmed
by peeling off conductive squares which would change the bit
pattern read by the sense logic. The fully populated boards are
presumed to be how one would start, and the squares peeled
off for making alterations.