* [pups] Seeking info on SBC11/21+ Falcon Plus
@ 2005-04-24 20:55 Magnus Danielson
2005-04-25 0:12 ` Michael Davidson
0 siblings, 1 reply; 2+ messages in thread
From: Magnus Danielson @ 2005-04-24 20:55 UTC (permalink / raw)
Dear all,
I'm sitting here with a M7676 SBC11/21+ Falcon Plus card. It came with a
BA11-VA chassi and a custom A/D card (controlled over the parallel bus).
I have been scanning the Internet a number of times, but have had no luck in
finding much material related. It has the T11 (DC310) chip, a pair of DC 319
serial chips and some unknown chip called DC331 "FALCON". I've found a few
related hints about it in the Micronotes (about the 82S100 PLA chip among
other things). I've also done some reverse-engineering, so part of the
schematic is know to me. But, since I have no plans of reverse-engineering the
DC331 chip getting the hands on some hard documents would be much apprechiated.
I also have a DEQNA card that I got from a friend. I am missing out on the AUI
port, so any information (schematic would be great) beyond the user guide is
appreachiated.
Cheers,
Magnus
^ permalink raw reply [flat|nested] 2+ messages in thread
* [pups] Seeking info on SBC11/21+ Falcon Plus
2005-04-24 20:55 [pups] Seeking info on SBC11/21+ Falcon Plus Magnus Danielson
@ 2005-04-25 0:12 ` Michael Davidson
0 siblings, 0 replies; 2+ messages in thread
From: Michael Davidson @ 2005-04-25 0:12 UTC (permalink / raw)
Magnus Danielson wrote:
>Dear all,
>
>I'm sitting here with a M7676 SBC11/21+ Falcon Plus card. It came with a
>BA11-VA chassi and a custom A/D card (controlled over the parallel bus).
>
>I have been scanning the Internet a number of times, but have had no luck in
>finding much material related. It has the T11 (DC310) chip, a pair of DC 319
>serial chips and some unknown chip called DC331 "FALCON". I've found a few
>related hints about it in the Micronotes (about the 82S100 PLA chip among
>other things). I've also done some reverse-engineering, so part of the
>schematic is know to me. But, since I have no plans of reverse-engineering the
>DC331 chip getting the hands on some hard documents would be much apprechiated
>
While it isn't identical, you might find the user guide for the original
M8063 Falcon SBC 11/21
to be at least somewhat useful. It can be found at:
http://www.bitsavers.org/pdf/dec/pdp11/1121/EK-KXT11-UG-PR1.pdf
As far as I can remember the Falcon and Falcon+ are functionally very
similar with the Falcon+
supporting larger memory devices and having a more flexible set of
options for the memory map.
Chapter 6 of the 1985 edition of the Microcomputer Products Handbook
lists all of the configuration
options for the Falcon+ and also shows the DC331 at E20 as being a "gate
array". I have a copy
of this manual and could send you a copy of the relevant pages if that
would be helpful.
Michael Davidson
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2005-04-24 20:55 [pups] Seeking info on SBC11/21+ Falcon Plus Magnus Danielson
2005-04-25 0:12 ` Michael Davidson
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