🚀 go-pugleaf

Hello edwin!

Replying to a message of edwin bailen  to All:

 >>> Some basic things to check for when a customer is experiencing trap
 >>> errors of  any kind include:
 >> 
 >>> 1. All memory SIMMs must be the same size and speed...
 >>> 2. All SIMMs should be from the same manufacturer.
 >>> 3. If the customer has mixed memory SIMMs, it may be possible to get
 >>> them to  work, although this would be a configuration unsupported by
 >>> OS/2
 >> 
 >> Unbelievable!
 >> 
 >>> If mixed memory SIMMs are being used, the customer must place the
 >>> SLOWER  speed memory in the first or lowest address sockets.  This
 >>> approach  occasionally works because OS/2 tests memory in the lower
 >>> address space to  determine its speed, then runs ALL memory at that
 >>> speed
 >> 
 >> This is utter garbage!
 >> 
 >> Who wrote this book?
 >> 
 >>> ... because OS/2 tests memory in the lower address space to determine
 >>> its speed, then runs ALL memory at that speed
 >> 
 >> Unbelieveable! OS/2 *cannot* "determine the speed of a bank of memory".
 >> Period.   -Kenny  --  Kenneth R. Crudup, Unix & OS/2 Software
 >> Consultant, Scott County Consulting kenny@panix.com  CI$: 75032,3044  

 eb> When I was running 2.1, I added some memory, and the system would not 
 eb> boot.  When I called the OS/2 tech support line, their statement was
 eb> "Oh,  all of the memory in the system must be of the same type and
 eb> speed, and  from the same vendor."  Right or wrong, they are at least
 eb> consistent.
Well, that is correct, but that is because of timing problems, not with OS/2,
but with the mobo and the memory chips. These were problems of the earlier
mobo's (and some later mobos) but this problem is assumed to be over on 72-pin
simms. Obviously the 32-pin simms were not exactly enough specificated to
handle the timing problems.

As chips with same size/speed/manufacturer are to be considered compatible,
this is what was advised at the time.


Bye, Erik!
--
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