fmidgley@phoenix.Princeton.EDU (Frank Murray Midgley) (08/06/90)
This weekend, I attempted to upgrade my Mac SE/30 to 2.5M. I got the casing open and the logic board removed with no trouble. The first two SIMM slots had four 256K boards in them, as it should. I inserted the two new boards into the third SIMM slot. When I closed up the case and restarted the Mac, I got the sad mac sound, along with a strange checkerboard pattern on the screen. I then tried placing one board in the third slot, and the second board in the fourth slot. Same reaction from the computer. When I removed the new boards, it went back to normal. Am I doing this totally wrong? I was grounded the whole time by a wrist tap, so I don't think I damaged the boards or the Mac. Any advice would be appreciated. Thanks, Frank /-----------------------------------------------------------------------------\ | fmidgley@phoenix.princeton.edu | This space left blank due to a lack | | | | | "Your fault -- core dumped." | of imagination. So sue me. | \-----------------------------------------------------------------------------/
mm5l+@andrew.cmu.edu (Matthew Mashyna) (08/07/90)
> This weekend, I attempted to upgrade my Mac SE/30 to 2.5M. Well, it looks like the problem, if you have an SE/30 and not an SE, is that you need to upgrade the newer Macs (SE/30s & MacII*) four SIMMs at a time. The older Pluses ans SEs use 16 bit data path; that's 8 bits X 2 SIMMs. The new 68020 and 68030 machines us 32 bit path; that's 8 bits X 4 SIMMs. Hope this helps. ============================================================================= |Matt Mashyna | "That is the most obscene abomination of a song... | |mm5l@andrew.cmu.edu | that is dirt, that is filth, that is trash. What | |Carnegie Mellon | possessed you to write such a disgusting, degenerate | | Every day is | type song as this ? ... And I'm complementing you by | | Earth Day. | considering it a song." - a critic | =============================================================================