bob@eecs.nwu.edu (Bob Hablutzel) (10/21/88)
> I now have 2 256K memory chips laying around after upgrading my Mac+ memory > with the 1Meg SIMMS. Does anyone know how I can use these 256K chips to > upgrade my memory from the current 2.5Meg to 3Meg? Thanks. Sorry. No can do. According to Apple, the Mac + can handle the following configurations: 512K (2 256K SIMMs) 1MB (4 256K SIMMs) 2MB (2 1MB SIMMs) 2.5MB (2 1MB SIMMs, and 2 256K SIMMs) 4MB (4 1MB SIMMs) Bob Hablutzel BOB@NUACC.ACNS.NWU.EDU
anderss@uplog.se (Anders Sjolund) (10/31/88)
>> I now have 2 256K memory chips laying around after upgrading my Mac+ memory >> with the 1Meg SIMMS. Does anyone know how I can use these 256K chips to >> upgrade my memory from the current 2.5Meg to 3Meg? Thanks. Since Apple is coming out with an upgraded (?) SE with a 40 Meg hard disk and 2 Mbyte RAM, I suppose this is what those spare 256K SIMMS are good for... -- Real life: Anders Sjolund Email: anderss@uplog.se Snail mail: TeleLOGIC Uppsala AB Phone: +46 18 189409 POB 1218 S - 751 42 Uppsala, Sweden
rfischer@skat.usc.edu (Roger Fischer) (11/02/88)
In article <323@uplog.se> anderss@uplog.UUCP (Anders Sjolund) writes: >>> I now have 2 256K memory chips laying around after upgrading my Mac+ memory>>> with the 1Meg SIMMS. Does anyone know how I can use these 256K chips to >>> upgrade my memory from the current 2.5Meg to 3Meg? Thanks. > > >Since Apple is coming out with an upgraded (?) SE with a 40 Meg hard disk and >2 Mbyte RAM, I suppose this is what those spare 256K SIMMS are good for... > The Macintosh Plus and the Mac SE have four slots for RAM simms. When they are put in, they must be installed in sets of two. Therefore the available configurations are 4 - 256K simms. -----> 1 meg 2 - 256K and 2 - 1meg simms -----> 2.5 megs 4 - 1meg simms. -----> 4 megs That is all that the mac logic board is built to accept. I'm not sure, but I think that MacSnap makes a ram expansion kit that allows two simms to be plugged into each slot, the problem is that it comes with it's own simms so you still would not be able to use your left over simms. Roger----- rfischer@skat.usc.edu or rfischer%skat.usc.edu@oberon.usc.edu
anderss@uplog.se (Anders Sjolund) (11/04/88)
In article <13207@oberon.USC.EDU> rfischer@skat.usc.edu (Roger Fischer) writes: >The Macintosh Plus and the Mac SE have four slots for RAM simms. When they >are put in, they must be installed in sets of two. Therefore the available >configurations are > > 4 - 256K simms. -----> 1 meg > 2 - 256K and 2 - 1meg simms -----> 2.5 megs > 4 - 1meg simms. -----> 4 megs > >That is all that the mac logic board is built to accept. I'm not sure, >but I think that MacSnap makes a ram expansion kit that allows two simms to >be plugged into each slot, the problem is that it comes with it's own simms >so you still would not be able to use your left over simms. You forgot to mention the configurations where only two simms are installed - 2 256K simms -> 512 Kbyte (ridiculous, isn't it ?) 2 1meg simms -> 2 Mbyte anderss@uplog.se -- Real life: Anders Sjolund Email: anderss@uplog.se Snail mail: TeleLOGIC Uppsala AB Phone: +46 18 189409 POB 1218 S - 751 42 Uppsala, Sweden