burke@pollux.usc.edu (Sean Burke) (12/20/89)
I have a 1/2 Mb RAM / Dual Serial Port board that has sockets for an extra 1 Mb of memory. I added the extra memory, but my 3b1 does not recognize it. Is there something extra that I have neglected to do? Thanks in advance for your help... Bach is right next to The Bad Brains in MY record collection!
lenny@icus.islp.ny.us (Lenny Tropiano) (12/21/89)
In article <21874@usc.edu> burke@pollux.usc.edu (Sean Burke) writes: |>I have a 1/2 Mb RAM / Dual Serial Port board that has sockets for |>an extra 1 Mb of memory. I added the extra memory, but my 3b1 does |>not recognize it. Is there something extra that I have neglected |>to do? Thanks in advance for your help... |> The EIA/RAM combo board clearly states that if you add more memory jumpers W1, W2, and W3 must be correctly set. To save you from digging up your manual (that you might or might not have ...) here's the table. Jumper and RAM IC locations RAM W1 W2 W3 Rows populated with ICs ------------------------------------------------------- 0.0 OFF OFF OFF None 0.5 OFF ON ON 5 and 6 only 1.0 ON OFF ON 7, 8, 9, 10 only 1.5 ON ON OFF 5 through 10 Also running memory test diagnostics from the "Diagnostics Floppy, sub test menu" would be a good idea... -lenny -- | Lenny Tropiano ICUS Software Systems lenny@icus.islp.ny.us | | {ames,pacbell,decuac,hombre,sbcs,attctc}!icus!lenny attmail!icus!lenny | +------- ICUS Software Systems -- PO Box 1; Islip Terrace, NY 11752 -------+