John A. Maier wrote:
> 
> I'm sure this question has been asked before but I've looked all over the webpage and found nothing on the subject.
> 
> I was going through a 1993 DECdirect hardware catalog and ran across memory options.
> 
> The VAXstation 3100, 3520, 2540, 4000, VAX 4000 Model 100, DECsystem 5500 and maybe others use a 72pin style memory SIMM.  DEC listed them as:
> MS40 parity 1-Mbit DRAM 8Meg
> MS42 parity 4-Mbit DRAM 4,8,12,16Meg
> MS44 parity 1-Mbit DRAM 4, 8Meg
> MS44 parity 4-Mbit DRAM 32Meg
> MS44 ECC    4-Mbit DRAM 16, 64Meg
> MS60 ECC    1-Mbit DRAM 16, 32Meg
> 

These are 80pin SIMMs.

Only the X-Terminals can use PS/2-SIMMs (4MB).

Bye,
Matthias