> On 01/21/2023 2:55 PM CST Fred Cisin via cctalk <cctalk@classiccmp.org> wrote:
> The first 5150 was available with one row of 16K RAM, you could plug
> whatever you had (such as from Godbout) into the other 3 rows, and almost
> anything was cheaper than IBM's prices.
>
>
> I think that the early 5160 also used 16K RAM, but I don't know if you
> could buy one without all 4 rows populated.
>
> Then 5160 was available that could use 64K RAM chips, and/or, with a
> trivial mod could use two rows of 256K chips, plus two rows of 64K chips.
>
> Anybody remember the full details?
>
That all sounds correct. In addition, I seem to recall there were some even
later 5160s that came from the factory with the 640K "mod." I just opened the
5160 I have to look at it. It's crammed full of boards that I didn't want to
pull, but I could see it has four rows of what look like 64K chips. The board
is marked "64 / 256K " and it has some RAM on at least one of the plug-in
boards.
I really should sell this monster before I get too old to lift it.
Will
