rab@hal.CWRU.Edu (Roger Bielefeld) (12/04/90)
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. -- Roger Bielefeld Case Western Reserve University rab@hal.cwru.edu Cleveland, Ohio USA
ehopper@ehpcb.WLK.COM (Ed Hopper) (12/05/90)
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 From the Olivetti 386PC service manual (an old DRAFT copy so it could be out of date!!)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 | -----------------------------------------------------------------------------