Just picked up a HUGE PDP-8I and PDP-15 and .....

From: Ethan Dicks <ethan_dicks_at_yahoo.com>
Date: Sun Nov 7 20:22:11 1999

--- John B <dylanb_at_sympatico.ca> 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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Received on Sun Nov 07 1999 - 20:22:11 GMT

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