DEC bus transceivers

Ethan Dicks ethan.dicks at
Tue Oct 25 10:23:54 CDT 2016

On Tue, Oct 25, 2016 at 2:35 AM, ben <bfranchuk at> wrote:
> But who has the big systems now days?


> The days of 4K core is long gone.

I have Unibus machines that were 8 or more "system units" (DD11CK
equivalents), and a PDP-11/20 that takes up 3 BA-11 boxes.  60% of it
is 4K core stacks, BTW, just like the day it was made in 1972.  It
only has a handful of peripherals (console, RK11, LP11...)

> Use TTL and try to keep the systems small.

That's great if one is cobbling together a new system, but it doesn't
help when one is trying to breathe life into an existing system by
adding a modern peripheral because ancient disks are no longer
reasonably available.


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