tgp@sei.cmu.edu (Tod Pike) (04/11/91)
I had posted this request on comp.sys.ibm.pc.hardware (but wasn't aware that a ps/2 specific group existed). I have a PS/2 30-286 with 1 meg of memory, and would like to upgrade to more memory. According to the specs and the local hardware shop, I can put up to 4 meg on the system board. My question is whether I can use standard 1 meg SIMMS (at the appropriate speed). I had purchased a couple of 1 meg SIMMS and tried them, but the system does not recognize them. After much grief and experimentation, I called one of the third party memory vendors listed in the back of PC magazine and asked them what I needed. They indicated that standard SIMMS will not work, as IBM requires a jumper on one of the chips...the modified chips (which look just like standard SIMMS) cost about twice as much. So, what's the scoop? Was the memory guy just trying to get me to buy more expensive chips, or has IBM really gone for non-standard memory modules? Thanks, Tod Pike Internet: tgp@sei.cmu.edu Mail: Carnegie Mellon University Software Engineering Institute Pittsburgh, PA. 15213-3980
Jim Gerlach <GERLACHJ@QUCDN.QueensU.CA> (04/12/91)
This seems to be my lucky day for followups... At the same time I upgraded my 50Z to 2 Mb I performed the same surgery on a Model 30-286. The salesclerk was not leading you on, you need SIMMS which are specific for the 30-286. You need 2 Mb SIMMs and you can install two of these for a total of 4 Mb. You cannot mix them with the existing 512 Kb SIMMs and as far as I know you can't use 1 Mb SIMMs. The prices may be higher than for "standard" SIMMs but have you checked true-blue prices? :-) In response to the previous posting ... No tools are required to remove or install SIMMs. Simply lift the latches and ease out at an angle. The Reference booklet that came with your 50Z has a pretty good explanation. Hope this helps, Jim Jim Gerlach - Cancer Research Laboratories James.H.Gerlach@QueensU.CA Queen's University GERLACHJ@QUCDN.QueensU.CA (NetNorth/BITNET) Room 358, Botterell Hall tel (613) 545-6446 Kingston, Ontario fax (613) 544-9708 CANADA K7L 3N6