PDP-11 on an S-100 Card
Steven M Jones classiccmp at
crash.com
Thu Jul 14 19:00:45 CDT 2011
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There was a thread here or on the N8VEM-S100 list about putting
different vintage CPUs on a newly designed S-100 boards. I happen to be
cleaning up my office and came across something done back in the day
worth noting on that theme...
In the May 1984 issue of Microsystems, /The Journal for Advanced
Microcomputing/ (Vol 5, Num 5), there is a directory of S-100 products.
ABACUS Technology Systems, Inc is among the vendors listed, and on page
67 they have a 1/4 page ad for their PC11 product - right next to a
similar ad for the Lattice C compiler. This board features a T11 with
32KW of RAM, and runs RT-11 v5.0 with compatible I/O devices emulated
somehow by a CP/M program (presumably running on an 808x/Z80 card in the
same chassis).
Here's the full text of the ad:
[snip]
-----REPLY-----
Hi! It was on CCTALK mailing list the S-100 PDP-11 was discussed a few weeks ago by the
people here.
My offer to build a board still stands but it will take some effort of someone(s) who can
design the schematic and write the software for whatever free/open source software is
necessary.
As I recall, the project fizzled since the obstacles to overcome were simply too enormous.
That's a shame however if someone gets ambitious and wants to take this on please let
me know since I'll volunteer to make the PCB, get some prototypes, etc.
Thanks and have a nice day!
Andrew Lynch