3 Mar
2010
3 Mar
'10
5:49 p.m.
I have a couple of uPAC modules from either a Honeywell DDP-516 or just
possibly from a H316 machine. They're marked CC690.
They're obviously some form of bus termination - just a series of clamp
diodes to GND and some lines with pull-ups to +6V.
The normal I/O bus termination on a DDP-516 is CC154, and I'm pretty
sure that there is no termination uPAC needed on a 316.
These were pulled from a machine in about 1984. I have some distant
memory that they are an "upgraded" CC154 and can be used in place of a
CC154.
Can anyone confirm that - either from documentation or just from
recollection?
Adrian