There was also a period of time when an earthquake in the far east
knocked out some of the fabs there, and the supply of memory got so bad
that some manufacturers had to stop shipping systems, but IBM just
switched to using their own memory. It also went the other way too, the
send generation CPU for the RT (6150/51) the Advanced processor or
ROMP-C was designed to use IBM memory modules in aluminum cans, but all
of the supply was going to higher margin products like mainframes, so in
the end a lot of the CPUs where shipped without the 4MB of memory being
populated. I was supporting a project that as using 6150 workstations
at the time and upgraded several machines from the original NMOS
processor to the CMOS enhanced processor.
Paul.
On 2017-01-28 9:00 PM, Guy Sotomayor Jr wrote:
At one time IBM was the largest manufacturer of memory and consumed *all* of
it internally (e.g. for IBM products). At the time all of IBM’s ICs were in
the “aluminum” cans unless they needed more exotic cooling.
In the PS/2 days, we ended up using some IBM produced memory because we could
get a better internal transfer price than buying out in the market because the
various IBM fabs had a bit of excess capacity and wanted it used.
TTFN - Guy
On Jan 28, 2017, at 11:44 AM, couryho...@aol.com wrote:
The talk of PS2 memory brought something back to me I have in a drawer
here...
ps2 memory - with weird square silver IBM Circuit packaged memory on
the stick.
What is the story on this? was IBM making it's own memory chips or just
repackaging them into
their silver square packaging?
Now I will have to dig these things out.
Thank Ed# _www.smecc.org_ (http://www.smecc.org)
