preece@uicsl.UUCP (11/30/83)
#N:uicsl:7300012:000:1234 uicsl!preece Nov 29 11:26:00 1983 I have a Datamac DM-64 memory board for my PC. I want to add more memory to it, but it isn't exactly like the ones I've seen articles about and I could use any advice anyone can offer (the only phone number I have for Datamac is out of service, so they may be no longer around). Rather than having four rows of sockets the board has two rows: 0 1 2 ... 17 ---- ---- ---- ---- E |XX| | | |XX| ... | | |XX| | | |XX| | | ---- ---- ---- ---- 0 1 2 ... 17 ---- ---- ---- ---- D | | | | | | ... | | | | | | | | | | ---- ---- ---- ---- The initially populated sockets (for 64K) are the even sockets in row E. There is also an 8 switch DIP switch on the board, which has switches 1, 2, and 3 ON, the others OFF. I'd like to hear from anyone who has one of these with instructions for adding chips, knows about them, or has any good idea about adding additional chips. I have two sets of chips, but I need to know (1) WHICH SOCKETS GET POPULATED NEXT (my own guess is E odds and D evens), and (2) HOW SHOULD THE SWITCHES BE SET? [P.S. I don't have the board in front of me, so it's possible I got odd and even reversed in my memory; I am sure of the pattern, however]. scott preece ihnp4!uiucdcs!uicsl!preece