Help Identifying RAM Chips - test-drb@ccmp.vtda.org

3 Nov 1997

You are right it was a typo on my part.
At 06:35 PM 11/2/97 -0800, you wrote:
...
   Your chip #1
is a 64k chip speed of 30ns, chips 2&3 are 256k at 150ns speed.                 
   ^^^^^^^^^^^^^^^^^^^^^^

I disagree with the 30ns figure; why the heck would a Compaq
Portable from 1983 have 30ns RAM in it?  300ns seems
far more likely, and is perfectly consistent with the numbering
from manufacturers of that era.

  The last set of tell the the size and speed (64-3
and 256-15).  John
 >I have two original Compaq Portables, both of which are giving POST
 >errors when they boot which indicate bad RAM.  I have gone through a few
 >...
 >Chip #1:
 >Hitachi
 >1818-3006
 >Japan  8332U
 >HM4864P-3 
Tim. (shoppa(a)triumf.ca)