Just picked up a HUGE PDP-8I and PDP-15 and ..... - test-drb@ccmp.vtda.org

7 Nov 1999

--- John B &lt;dylanb(a)sympatico.ca&gt; wrote:
...
  Here is what I picked up: (lot of questions);

 PDP-8I (came from a former Dec employee):  
Cool haul.

...
  I hope to have the 8I running early next week (looks
like it is plug and
 play). 
Very much so.

...
  Questions:

 1. How much memory is inside the 8I and what was the stack size, how much
 expansion is the MM8Ia s? 
I can tell you only that there are spaces in the CPU backplane for two 4K
stacks.  The MM8I's _might_ be 8K each.  The standard stack for the -8/i
and -8/L is 4K.  I am not aware of any larger ones.  The external box on
my -8/L has two stacks - total of 12K.

...
  3. I found a board made by digital that says
"CMOS-8" (memory),, what model
 PDP-8 does this work on? 
Does it look like an OMNIBUS card?  If so, then -8/a and -8/e/f/m.  Pretty
much there are three types of -8s - transistorized, TTL FLIP-CHIP and ONMIBUS
(not including DECmates).

-ethan

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