10 Oct
2003
10 Oct
'03
1:38 p.m.
Found this in a pile of scrap boards today. It looks like a S-100 memory
board but has 2 banks of 12 memory chips. The chips are AM9016EPCs which I
think are 16k x 1 DRAMS. Also there's no 5 volt regulator or address
jumpers or switches. It appears to be a 32k x 12 bit memory card for a
S-100 system that has built in 5 regulation and at a fix address. Anybody
have any idea what system it's for? The only markings on the card are what
looks like an overlapping C and H with the opening on the C facing down
instead of to the right. The H is below and to the left of the C.
Joe
10 Oct
10 Oct
5:35 p.m.
Joe wrote:
Found this in a pile of scrap boards today. It
looks like a S-100
memory
board but has 2 banks of 12 memory chips. The chips are AM9016EPCs which I
think are 16k x 1 DRAMS. Also there's no 5 volt regulator or address
jumpers or switches. It appears to be a 32k x 12 bit memory card for a
They may be physically arranged as two rows of 12, but it seems likely
that theyd be wired as three banks of eight, making it a 48K DRAM board.
Have you verified the data line wiring?
11 Oct
11 Oct
4:12 a.m.
On Fri, 10 Oct 2003, Eric Smith wrote:
Joe wrote:
One of the earliest RAM cards that I had for my first 5150 used 12 chip
rows, in order to provide ECC memory. "Boulder Creek Systems"?
Found this in a pile of scrap boards today. It
looks like a S-100
memory
board but has 2 banks of 12 memory chips. The chips are AM9016EPCs which I
think are 16k x 1 DRAMS. Also there's no 5 volt regulator or address
jumpers or switches. It appears to be a 32k x 12 bit memory card for a
They may be
physically arranged as two rows of 12, but it seems likely
that theyd be wired as three banks of eight, making it a 48K DRAM board.
Have you verified the data line wiring?
7744
days inactive
7745
days old
2 comments
3 participants
participants (3)
-
cisin＠xenosoft.com -
eric＠brouhaha.com -
rigdonj＠cfl.rr.com