12 bit S-100 memory card ????

From: Fred Cisin <cisin_at_xenosoft.com>
Date: Sat Oct 11 11:12:56 2003

On Fri, 10 Oct 2003, Eric Smith wrote:
> 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?

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"?
Received on Sat Oct 11 2003 - 11:12:56 BST