John Doyle wrote:
Does anyone know where a software emulator or a
hardware replacement
for a DEC DEMSA AA can be found?
The DEMSA could run a bunch of different code:
DECnet Router, X.25 Gateway and probably SNA/Gateway too.
Phase IV and Phase V.
DECnis (also obsolete) could do all the non-SNA Phase V
things that the DEMSA could do. I would guess that the
suggested replacement would have been an Alpha running
Digital Unix along with some synch cards if you needed
X.25. Now that the Alpha EOL is in the air, you probably
want to look at a cisco router of some sort.
If you do want to add emulation to something like
SIMH, it should not be too hard. The heart of the
DEMSA is a uVAX II and the schematics and maintenance
manual are available on the net.
Antonio
--
Antonio carlini
arcarlini at
iee.org