(TXT) View Source
       
       # TANDY/RADIO SHACK
       
          MEMORY EXPANSION ADAPTER (250-4027)
       
          Card Type              Memory                                  
          Maximum Onboard Memory 8MB DRAM                                
          Data Bus               Tandy 3000NL memory expansion bus       
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Setting                 | Label | Position  |
          |----------------------------------------+-------+-----------|
          | » | Computer has one memory expansion  |  E1   | Pins 2 &  |
          |   | slot                               |       | 3 closed  |
          |---+------------------------------------+-------+-----------|
          |   | Computer has two memory expansion  |  E1   | Pins 1 &  |
          |   | slots                              |       | 2 closed  |
          |------------------------------------------------------------|
          |      Note:E1 may not be present on all versions of this    |
          |      card.                                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Setting  |    Bank 0    |  Bank 1   |  Bank 2  |  Bank 3  |
          |-----------+--------------+-----------+----------+----------|
          |   512KB   | (2) 256K x 9 |   None    |   None   |   None   |
          |-----------+--------------+-----------+----------+----------|
          |    1MB    | (2) 256K x 9 | (2) 256K  |   None   |   None   |
          |           |              |    x 9    |          |          |
          |-----------+--------------+-----------+----------+----------|
          |   1.5MB   | (2) 256K x 9 | (2) 256K  | (2) 256K |   None   |
          |           |              |    x 9    |   x 9    |          |
          |-----------+--------------+-----------+----------+----------|
          |    2MB    | (2) 256K x 9 | (2) 256K  | (2) 256K | (2) 256K |
          |           |              |    x 9    |   x 9    |   x 9    |
          |-----------+--------------+-----------+----------+----------|
          |    2MB    |  (2) 1M x 9  |   None    |   None   |   None   |
          |-----------+--------------+-----------+----------+----------|
          |   2.5MB   | (2) 256K x 9 | (2) 1M x  |   None   |   None   |
          |           |              |     9     |          |          |
          |-----------+--------------+-----------+----------+----------|
          |    3MB    | (2) 256K x 9 | (2) 256K  | (2) 1M x |   None   |
          |           |              |    x 9    |    9     |          |
          |-----------+--------------+-----------+----------+----------|
          |   3.5MB   | (2) 256K x 9 | (2) 256K  | (2) 256K | (2) 1M x |
          |           |              |    x 9    |   x 9    |    9     |
          |-----------+--------------+-----------+----------+----------|
          |    4MB    |  (2) 1M x 9  | (2) 1M x  |   None   |   None   |
          |           |              |     9     |          |          |
          |-----------+--------------+-----------+----------+----------|
          |   4.5MB   | (2) 256K x 9 | (2) 1M x  | (2) 1M x |   None   |
          |           |              |     9     |    9     |          |
          |-----------+--------------+-----------+----------+----------|
          |    5MB    | (2) 256K x 9 | (2) 256K  | (2) 1M x | (2) 1M x |
          |           |              |    x 9    |    9     |    9     |
          |-----------+--------------+-----------+----------+----------|
          |    6MB    |  (2) 1M x 9  | (2) 1M x  | (2) 1M x |   None   |
          |           |              |     9     |    9     |          |
          |-----------+--------------+-----------+----------+----------|
          |   6.5MB   | (2) 256K x 9 | (2) 1M x  | (2) 1M x | (2) 1M x |
          |           |              |     9     |    9     |    9     |
          |-----------+--------------+-----------+----------+----------|
          |    8MB    |  (2) 1M x 9  | (2) 1M x  | (2) 1M x | (2) 1M x |
          |           |              |     9     |    9     |    9     |
          |------------------------------------------------------------|
          |      Note:The memory installed on the mainboard must be    |
          |      removed in order to use this card.                    |
          |                                                            |
          |      Within each bank, the SIMMs must be the same size.    |
          |      Banks may contain either 256K or 1M SIMMs.            |
          +------------------------------------------------------------+