meltblow@utkux1.utk.edu (23KM4CJ7) (10/10/90)
Has anyone ever performed a memory upgrade on an Apple LaserWriter II
NTX? I just upgraded a standard 2MB NTX system board with the 4MB
Apple LW Expansion kit, and only got 5MB, instead of the expected 6MB,
to show on the test page. The procedure I followed was:
1. Moved the 4-256K simms from Bank 0 to Bank 2.
2. Left the 4-256K simms in Bank 1 untouched.
3. Put the 4-1MB simms from the kit in Bank 0.
Recall that the banks on the system board are numbered from RIGHT to
LEFT 0, 1, and 2; that each bank has four simm slots; and that the original
2MB configuration has banks 0 and 1 filled with 256K simms, with bank 2
being empty.
Is 6MB an impossible number? Do I need to change the order of the
simms. I was the following the 3 rules for installing Apple Memory, namely:
1. Insure that simms of like density are in the same bank.
2. Completely fill a bank.
3. Put the higher density chips in the lower numbered (or lettered) bank.
These are the three rules we use when upgrading Macs.
Suggestions, comments, even (ghast!) flames???
Thanks.
--
Who: L. Jack Wilson
What: UTK OAC Microsupport
Where: lwilson@utkvx3 (Bitnet)
Why: Standard Disclaimer fits nicely here.