[rescue] large lot of cheap 72pin memory on e bay

[rescue at sunhelp.org]

> > IBM used funky SIMMS in some of the PS/2 stuff, like the model 70.
> > It had a different addressing scheme than normal memory.
> I don't know about the "different addressing scheme" bit, but those
> SIMMs are, errrrr, different.  
Just for the record, the IBM SIMMs I have are almost certainly for
an RS/6000 (16MB 10-chip 72-pin SIMMs, which I bought in the hopes
that they'd be EDO ECC JEDEC cache SIMMs usable in a Mylex DAC960.)
Sridhar couldn't ID them even w/ a part number, though...

> The MCA bus is a tossup: as a bus, it was much better than ISA/EISA,
> but IBM's decision to keep it proprietary was a braindead marketing
> move at a time when "the clones" were already driving the market.
IBM's decision was a conscious decision to try to get back some of
the revenue that was being lost to the clone makers, and led directly
to the creation of EISA.  Once upon a time while I was in college,
I was temping through Manpower for IBM and completed most of the
training necessary to sell PS/2s on-campus...there were some informal
discussions along the way that confirmed things I'd read in the
computer trade press at the time.

> ObRescue: Anyone got a set of AIX floppies for the PS/2 mod 70?
Aack! Pffththth!

  --Rip