jyp@wucs1.wustl.edu (Jerome Yvon Plun) (01/23/91)
In all the set-ups I have heard about for the IIsi, one has to put 4 similar SIMMs at once getting 2,3,5,9,or 17 MB. Is it possible to put only 2 SIMMs (more precisely two 4MB SIMMs to be able to expand later if need come but to avoid throwing away smaller SIMMs to buy 4 bigger)? jerome Jerome Plun jyp@wucs1.wustl.edu // Tell me why is it so hard to say Dept of Computer Science // Brother don't you walk away Washington University // St. Louis, Mo // Hooters "Zig Zag"
MSR104@psuvm.psu.edu (Mike Rineer) (01/24/91)
In article <1991Jan23.144850.11171@cec1.wustl.edu>, jyp@wucs1.wustl.edu (Jerome Yvon Plun) says: > >In all the set-ups I have heard about for the IIsi, one has to put 4 similar >SIMMs at once getting 2,3,5,9,or 17 MB. Is it possible to put only 2 SIMMs >(more precisely two 4MB SIMMs to be able to expand later if need come but >to avoid throwing away smaller SIMMs to buy 4 bigger)? > From the Macintosh Tech. Note #176 titled "Macintosh Memory Configurations": "Macintosh IIsi The Macintosh IIsi is similar to the SE/30, II, IIx, and IIcx in that it uses a 32-bit data bus with 8-bit SIMMS; you must always upgrade memory in four SIMM chunks. The IIsi differs in that it only has one SIMM bank instead of two. If future 16 Mbit DRAMs are compatible with the current refresh frequency, then the IIsi will support 16 Mbit SIMMs, enabling a RAM configuration of 65 MBs (4 x 16MB + 1MB). The IIsi requires 100ns or faster SIMMs." So, I guess the answer to your question would be "No." Bummer, eh? --------------------------------------------------------------------------- Michael S. Rineer * "I would just as soon eat my own ear Senior Student Consultant | wax. And we all know how horrid & Student Lab Operator * that tastes, right kids?" The Pennsylvania State University | MSR104 @ PSUVM * - Rik, The Young Ones