9 May
2012
9 May
'12
4:02 p.m.
On 9 May 2012 at 18:16, B Degnan wrote:
There was some debate at VCF East whether this
"IBM 256KB Memory
Card" P/N 6407740 is a bubble memory card (pic below). The card was
on display with my IBM PC 5150 exhibit. I originally pulled it from
an IBM 5155 portable.
http://www.vintagecomputer.net/ibm/5155/ibm_256KB_memory_card_6407740.
jpg
Typically you don't see 32-pin 64K RAM chips on a ISA card. That does
not make it bubble memory though, so I put this out to the esteemed
CCTECH community for answers/ideas.
Nope, they're IBM 64KB memory modules. Google on '6119927 IBM" for
more clues.
I think it's in my O&A. I can check if you'd like.
--Chuck