19 Dec
2002
19 Dec
'02
9:47 p.m.
a little googling returned the following...
http://www.classiccmp.org/mail-archive/classiccmp/1998-10/0706.html
http://home.no.net/hamar/pcl.htm - This gent has his system still with a
ram20 in it
http://www.classiccmp.org/mail-archive/classiccmp/1998-11/1894.html
hope these help you.
At 09:58 PM 12/19/02 -0500, you wrote:
Hello, all:
I just got a CompuPro RAM20 memory board with no manual. I'm looking
for the DIP switch settings specifically, but a copy of the manual would be
very helpful.
It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The
memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these
are 2kx1 chips, resulting in a 16k board.
Any help appreciated. Thanks.
Rich Cini
Collector of classic computers
Build Master for the Altair32 Emulation Project
Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/
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