expanding PDP-8 memory (was Re: Finally got a "straight" DF32 yesterday)

From: Ethan Dicks <ethan_dicks_at_yahoo.com>
Date: Fri Nov 5 07:16:36 1999

--- John B <dylanb_at_sympatico.ca> wrote:
> >--- Mike Ford <mikeford_at_socal.rr.com> wrote:
> >> >More Paper tape software...
>
> If the paper tapes have anything PDP 8 on them I can send you a copy. I have
> the PDP-8/S already hooked up to my PC (positive level converters ;-) )

Great.
 
> One other thing.... you mentioned you wanted to add more memory to one of
> your straight 8s.

Not quite. I have no interest in adding more memory to the Straight 8s. I
was contemplating either replacing a core stack in an -8/L with battery-
backed CMOS static RAM to free up a core stack for my -8/i, or adding 28K of
CMOS static RAM to the -8/i. This is all to be able to run OS/8. I know
the Disk Monitor will run in 4K.

> I have two studies done by the McMaster University on
> building core memory expanders for the 8,8/s using straight 8 memory (8/s,8
> used the same kinds) and some flip chips.

Interesting.

> You might want to kill one of your straight 8s for the memory...

> A straight-8 still isn't worth as much whole as it is in parts.. Ugh..

I'm not completely convinced about that. I might be, but as the "first 8",
there's a certain aura that goes with it.

> You might want to think about doing that as it is nice to keep the same
> boards/technology in a transistor computer like that.

I have every interest in keeping the technology "pure". It's the M-series
-8s that I'm considering polluting with modern parts.

-ethan


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Received on Fri Nov 05 1999 - 07:16:36 GMT

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