pete@oakhill.UUCP (Pete Percosan) (07/03/90)
Hello -
I have a question concerning the process for upgrading a new
mac se (with 20meg hd). I looked at the motherboard and located
the simms (not to tough) and a jumper for 1 or 2/4 meg (does this
mean that you can only install 4 256x8 - 1 meg, 4 512x8 - 2 meg,
or 4 1024x8 - 4 meg simms?). when i installed the 4 1024x8s and set
the jumper to the 2/4 meg setting, i found that the system only
thought that there was a single meg installed.
any pointers would be appreciated.
pete percosan
p.s. assuming the correct memory speeds, will memory used for the mac II work
in the se? and vice versa.barrey@ka.excelan.com (Barrey Jewall) (07/04/90)
In article <3479@chomsky.oakhill.UUCP> pete@oakhill.UUCP (Pete Percosan) writes: >Hello - > > I have a question concerning the process for upgrading a new > mac se (with 20meg hd). I looked at the motherboard and located > the simms (not to tough) and a jumper for 1 or 2/4 meg (does this > mean that you can only install 4 256x8 - 1 meg, 4 512x8 - 2 meg, > or 4 1024x8 - 4 meg simms?). when i installed the 4 1024x8s and set > the jumper to the 2/4 meg setting, i found that the system only > thought that there was a single meg installed. > any pointers would be appreciated. > pete percosan In the new "Jumper-Style" SE's , you need to have the jumper REMOVED for either 2.5 or 4MB. (2.5 is accomplished by using 2- 256K SIMMs in the REARMOST sockets, and 2 1MB SIMMs in the sockets closest to the edge of the board. This order is reversed for the "JUMPERLESS" style of motherboard (older).. I usually take the jumper off, then stick it back on over only ONE PIN of the set, that way I can downgrade the mac later if I must... >p.s. assuming the correct memory speeds, will memory used for the mac II work > in the se? and vice versa. Assuming that the speeds are as follows, it should work just fine... RAM SPEEDS FOR MACINTOSH Mac Plus, SE -150ns Mac II -120ns MAc IIx, IIcx -100ns Mac IIci,SE/30 -80ns (Fast Page Mode) Good luck! MY OPINIONS ARE MY OWN! +================================================================+ + San Francisco Giants - 10 Games Back and Gaining !! + + Hummmm Baby!!! + +===============================++===============================+ + Barrey Jewall ++ "My opinions are my opinions" + + barrey@novell.com ++ (rather self-evident, eh?) + + Novell, Inc.- San Jose, Calif.++ + +===============================++===============================+