TANDY  2500 RSX  (250-1620/1621)         Memory         Faxback Doc. # 1913

Note: Refer to Faxback Doc. # 1916 for Main Logic Board Layout.

The Main Logic Board has 1MB of permanently installed memory in Banks 0 and
1. Bank 2 consists of two empty SIMM sockets. The sockets enable you to 
install two 70 ns 1MB (25-5137) or two 4MB (25-5136) SIMMs.

The following table lists the SIMMs required for each memory configuration:

Banks 0/1 (1)   Bank 2    Total      Interleave    Total Number
                (SIMMs)   Memory                     of SIMMs

256KB/256KB       0        1MB            2             0

256KB/256KB      2MB       3MB            0             2

256KB/256KB      8MB      Maximum         0             2

                         Total 9MB

(1) The chips in Banks 0 and 1 supply 1MB of memory in all configurations.
The default configuration (1MB of permanent memory) is listed first.