21 Jan
2023
21 Jan
'23
2:43 p.m.
Nope, they're numbered 2479 9595, but ISTR some irregularities among BBM
part numbers, especially when it came to LSI and memory chips.
They do have GND and Vcc on pins 9 and 10 respectively though, as Brent
suggests; maybe my memory from 30 years ago isn't so bad after all (no idea
what I had for breakfast though).
I did misremember the no. of chips though: 9 x 16, so presumably with
parity.
m
On Sat, Jan 21, 2023 at 5:10 PM Bill Degnan via cctalk <
cctalk(a)classiccmp.org> wrote:
What is the Burroughs part number / printed on the
chip? The 1449 1112 RAM
chips are Burroughs' part number for the intel 2102 RAM
Bill
On Sat, Jan 21, 2023, 3:51 PM Brent Hilpert via cctalk <
cctalk(a)classiccmp.org> wrote:
numbered
On 2023-Jan-21, at 11:25 AM, Mike Stein via
cctalk wrote:
> Finally, some Burroughs memory boards containing what I think are
2102s,
but
I'd have to investigate.
Soldered or socketed?
I'm on the lookout for 16 (or more to have some spares) 2102s to populate
an EconoRAM S100 memory board to go in an Altair. Proviso being they have
to be 'fast enough' (<=450nS, not sure whether 650 would be OK or not).
...
Speaking of gold-plated chips, I'm finally
scrapping the last remnants
of a
> Redactron mag card word processor; the main board has some house
> white ceramic chips with the usual gold pins
and lids (24, 40, 16
pins).
(Could probably figure out many of them with some rev-eng'ing to get
their
pinout.)