Request for assistance

[Mike Bilow]

Mark Glassberg Fornarotto jun-30-96 wrote in a message to Mike Bilow:

 MGFj> I understand that I have to unmix my top four SIMMs, using
 MGFj> either 80s, which the motherboard came with, or 70s.

Right.  You can mix 70 ns and 80 ns safely if the motherboard will run with all
80 ns RAM.  However, all of the memory in the same bank must share the same
refresh mode, which means it has to all be of the same type.  You cannot, for
this reason, mix three-chip and nine-chip SIMMs in the same bank, nor can you
use two SIMMs retrofitted from 256 Kb chips and two SIMMs of more conventional
design in the same bank.

 MGFj> P.S.:  I booted a half dozen times in succession, up to the
 MGFj> point of inserting the root disk.  About half the time I got
 MGFj> a message indicating RAM a problem just before the line
 MGFj> indicating the hard drive partitions.

The operating system is trying to tell you something.
 
-- Mike