11 Apr
2024
11 Apr
'24
8:55 a.m.
Seems logical enough that someone at the time bought a 128K machine and stuffed in a bunch
of ram chips they may have had laying around at the time. Memory was kind of expensive -
especially new from IBM. That's totally something I would have done at the time (and
probably did, but it was likely an XT for me).
Joe
On Apr 10, 2024, at 9:51 PM, Just Kant via cctalk
<cctalk(a)classiccmp.org> wrote:
I sort of doubt any of these boards were factory supplied this way, but the date codes on
the ram in question are consistent with most other ics . the other banks contain chips
that are months older, or newer.
64-256KB SYSTEM BOARD
18 TI gold capped 4164-20 chips in banks 0 and 1.
Mix of Fujitsu, TI, NEC chips in banks 2 and 3.
There are a half dozen numeric codes present on the board. I don't know what any
signify.