Attention 1802 fans...

From: Bob Shannon <bshannon_at_tiac.net>
Date: Mon Sep 30 12:40:00 2002

I've just found something rather rare, and I'm willing to part with it,
so...

For Sale or Trade (Not listed on eBay!):

An RCA CDP 1801 CPU board, New Old Stock, with matching edge-card
connector. The PCB artwork is labled "RCA GPA 3903822/02 PCA 47-5", and
"3901822".

This is a 4.25 inch by 2.75 inch (including fingers) blue-colored PCB
with a 40-pin CDP1801UD data path chip and its
associated 28-pin SSTC TA6890W control store ROM, along with some
passive support components. The IC's are
in white ceramic with gold covers. Even the Beckman 22K resistor DIP is
in a white ceramic package. PCB traces are tinned over a blue
substrate, with a 44-pin gold edge finger connector.

The mating connector is a Sullins ETM22DSEH in a matching blue color,
for some reason (because is looks really cool?).

This two-chip CPU is a very early example of the RCA COSMAC CPU design
built prior to the much more common CDP1802 single-chip processor.
 Dates codes are 7539 for the data path, and 7525 for the SSTC chip.
 Condition is absolutely mint, NOS-condition, but untested. No
documentation, but I ~MAY~ be able to find something on this board, just
don't count on it.

I'll also include a pair of vintage HP hexidecimal displays exactly like
those used on the original ELF project, to make this combo the starting
point for a really special ELF project.

(Some ceramic 1852's may also be available)
Received on Mon Sep 30 2002 - 12:40:00 BST