RE: Model 400 memory upgrade

Here is our memory configuration on our old model 400 which is maxed out to
my understanding:
Opt  Resource        Type-model  Status                Text

     CEC01            9402-400   Operational           Main Card Enclosure

     PN01             2468-001   Operational           System Control Panel

     MP01             2131-000   Operational           System Processor Card

     SP01             918B-001   Operational           Service Processor
Card 
     BCC01                       Operational           Bus Extender

     MS01                        Operational           32MB Main Storage
Card 
       MS02                      Operational           32MB Main Storage
Card 
       MS03                      Operational           64MB Main Storage
Card 
       MS04                      Operational           64MB Main Storage
Card 

-----Original Message-----
From: Metz, Zak 

This weekend I was upgrading a model 400. The system already had 2x32MB
and 2x16MB. I added 2x32MB and after IPL received SRCA6001730. Thanks to
this very mailing list, I found that the third pair of memory slots is
not usable on a 2130 processor and removed 2x16MB.
 
Now here's the part that I'm unclear about. After removing 2x16MB, the
system IPL'd clean. However, from SST under Main Storage Resources, the
system reports 32MB at location 0, 64MB at 1, and 64MB at 2. I left the
system with 32MBx4, so where is the 32MB at 0 coming from? Is this
memory on the board somewhere? In other words, is the system truly maxed
out now (32+64+64=160), or do they need 64MBx2+16MBx2 to max it out,
ignoring what the system reports at 0?