Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!lavaca.uh.edu!menudo.uh.edu!lobster!ehpcb!ehopper From: ehopper@ehpcb.WLK.COM (Ed Hopper) Newsgroups: comp.sys.att Subject: Re: Adding memory to a 6386 Keywords: memory 6386 Message-ID: <6iLoT1w163w@ehpcb.WLK.COM> Date: 5 Dec 90 00:50:40 GMT References: <1990Dec4.041219.21127@usenet.ins.cwru.edu> Organization: Ed Hopper's BBS - Houston, Texas 713-997-7575 Lines: 59 rab@hal.CWRU.Edu (Roger Bielefeld) writes: > I took the four 256K SIMMs out of a 6386 and loaded up the > memory board with 16 1M SIMMs, just like the vendor said I > could. When I run the AT&T Customer Diagnostics program > to tell the CMOS how much extended memory I have, it rejects > all values other than zero. There are some DIP switches on > the memory board. Is that the problem? If so, could some > kind soul please send me the correct switch settings? None > of the documentation that came with the machine says anything > about the memory board. Thank you. From the Olivetti 386PC service manual (an old DRAFT copy so it could be out of date!!) Switch L07LL Switch L06LL ----------------------------------- ------------------ Board # RAM Parity Banks Page Address Boundary Inst Installed Enabled Selection Upper Lower 1 23 4 5678 1234 5678 ------------------------------------------------------------------------ (1MB SIMMS) 1 4MB 0 11 0 0000 0011 0000 1 8MB 0 10 0 0000 0111 0000 1 16MB 0 00 0 0000 1111 0000 2 4MB 0 11 0 0001 0011 0000 2 8MB 0 10 0 0001 0111 0000 2 16MB 0 00 0 0001 1111 0000 3 4MB 0 11 0 0010 0011 0000 3 8MB 0 10 0 0010 0111 0000 3 16MB 0 00 0 0010 1111 0000 (256K SIMMS) 1 1MB 0 11 0 0000 0000 0000 1 2MB 0 10 0 0000 0001 0000 1 4MB 0 00 0 0000 0011 0000 2 1MB 0 11 0 0000 0100 0100 2 2MB 0 10 0 0000 0101 0100 2 4MB 0 00 0 0000 0111 0100 3 1MB 0 11 0 0000 1000 1000 3 2MB 0 10 0 0000 1001 1000 3 4MB 0 00 0 0000 1011 1000 These two switches are located in the top center of the board between the two columns of SIMMS. Ed Hopper ----------------------------------------------------------------------------- | Ed Hopper's BBS 713-997-7575 - Houston - Free Access to AT&T Employees | | USENET - ILink - Smartnet PC Board - Markmail Offline Reader System | -----------------------------------------------------------------------------