PMI memory on an -11/93 (Was: Installing an operating system on an 11/83)

[Henk Gooijen]

I always thought that you cannot add (PMI) memory to an 11/93.
There are two versions of the 11/93. One with 2 MB, the other
with 4 MB of memory _on board_.   And that’s it.
If you have an 11/93 CPU with 2 MB on board, the board is just
half populated with memory. I don’t think you can add memory
externally.  But I might be wrong …

Henk, PA8PDP

Van: Noel Chiappa via cctalk<mailto:cctalk at classiccmp.org>
Verzonden: dinsdag 22 februari 2022 18:55
Aan: cctalk at classiccmp.org<mailto:cctalk at classiccmp.org>
CC: jnc at mercury.lcs.mit.edu<mailto:jnc at mercury.lcs.mit.edu>
Onderwerp: Re: PMI memory on an -11/93 (Was: Installing an operating system on an 11/83)

    > From: Bill Gunshannon

    > Just wish I could get some PMI memory for that 93.

?? The KDJ11-E in the -11/93 comes with a minimum of 2MB on the CPU card.
That's enough for almost 16 maximum-sized processes (assuming they aren't
sharing program texts - almost double that, if they are). Does one really
need more than that for vintage retro use?

Besides, the on-board memory operates at full speed (same as cache memory on
the KDJ11-B); even if you added PMI memory, the KDJ11-E has no cache, so it
would be a _lot_ slower than the on-board memory.

        Noel

PS: Can people _please_ trim messages they are replying to, so we don't all
have to scroll down past a bunch of irrelevant drek? Thank you.