[comp.sys.mac.hardware] MacIIsi Memory Configurations

morris@ucunix.san.uc.edu (Ted Morris) (12/20/90)

recent "Support Partnership Tech Notes" put out by my district
Apple folks has a blurb about Mac Classic, LC, and IIsi Memory
Configurations.  The table's too wide to scan and post, so I'll
try not to introduce any errors as I transcribe:
 
Mac Classic
 
Total    Main Logic      Memory Expansion   Memory Expansion
Memory   Board           Card               Card SIMMs
======   ==========      ================   ================
1.0Mb    1Mb (built-in)  empty              not available
2.0Mb    "               1Mb (on-board)*    empty
2.5Mb    "               "                  (2) 256K SIMMs
4.0Mb    "               "                  (2) 1M SIMMs
 
                         * M6361LL/A Mac Classic 1Mb Mem. Exp.
                         Cd.
 
Mac LC
 
Total    Main Logic       Memory Expansion
Memory   Board            SIMMs
======   ==========       ================
 2Mb     2Mb (built-in)   empty
 4Mb     "                (2) 1Mb SIMMs
 6Mb     "                (2) 2Mb SIMMs
10Mb     "                (2) 4Mb SIMMs
 
Mac IIsi
 
Total    Main Logic       Memory Expansion
Memory   Board            SIMMs
======   ==========       ================
 2Mb     1Mb (built-in)   (4) 256K SIMMs
 3Mb     "                (4) 512K SIMMs
 5Mb     "                (4) 1Mb SIMMs
 9Mb     "                (4) 2Mb SIMMs
17Mb     "                (4) 4Mb SIMMs
 
Frankly, I didn't even know that 512K SIMMs and 2Mb SIMMs were
widely available on the market (they may not be (-: ).  Apple
notes further in this memo, "256KB and 512KB SIMMs are not
supported by Macintosh LC.  Expansion of Macintosh Classic past
1Mb requires M6361LL/A Expansion Card.  The minimum recommended
DRAM SIMM access time is 100ns.  Fast page mode SIMMs are not
required."
 
Ted Morris          giving up on cutesy .sigs for a while