(TXT) View Source
       
       # TANDY/RADIO SHACK
       
          2500 RSX (2500-1620/1621)
       
          Processor        80386SX                                       
          Processor Speed  25MHz                                         
          Chip Set         Unidentified                                  
          Video Chip Set   Accumos                                       
          Maximum Onboard  9MB                                           
          Memory           
          Maximum Video    512KB                                         
          Memory           
          Cache            None                                          
          BIOS             Unidentified                                  
          Dimensions       220mm x 220mm                                 
          I/O Options      Floppy drive interface, IDE interface,        
                           parallel port, PS/2 mouse port, serial port,  
                           VGA port, riser slot                          
          NPU Options      80387SX                                       
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose         | Location | Purpose            | Location |
          |-----------------+----------+--------------------+----------|
          | VGA port        |   CN1    | Volume control     |   CN5    |
          |-----------------+----------+--------------------+----------|
          | PS/2 mouse port |   CN2    | IDE interface      |   CN6    |
          |-----------------+----------+--------------------+----------|
          | Parallel port   |   CN3    | Floppy drive       |   CN7    |
          |                 |          | interface          |          |
          |-----------------+----------+--------------------+----------|
          | Serial port     |   CN4    | Riser slot         |   SL1    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | Factory configured - do not alter |  E1   |    Open    |
          |---+-----------------------------------+-------+------------|
          | » | On board video enabled            |  J1   | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          |   | On board video disabled           |  J1   | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0/1    |            Bank 2            |
          |------------+----------------+------------------------------|
          |    1MB     |      1MB       |             None             |
          |------------+----------------+------------------------------|
          |    3MB     |      1MB       |          (2) 1M x 9          |
          |------------+----------------+------------------------------|
          |    9MB     |      1MB       |          (2) 4M x 9          |
          |------------------------------------------------------------|
          | Note: Bank 0/1 is factory installed and is not             |
          | configurable. The location is unidentified.                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VIDEO MEMORY CONFIGURATION                 |
          |------------------------------------------------------------|
          |       Size        |       Bank 0        |      Bank 1      |
          |-------------------+---------------------+------------------|
          |       256KB       |        256KB        |       None       |
          |-------------------+---------------------+------------------|
          |       512KB       |        256KB        |      256KB       |
          |------------------------------------------------------------|
          | Note: The location of banks 0 & 1 are unidentified. The    |
          | size of the video memory chips are unidentified.           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    HARD DRIVE SELECTION                    |
          |------------------------------------------------------------|
          |            Setting             |     C/D     |   C/D+DSP   |
          |--------------------------------+-------------+-------------|
          |       1 drive installed        |   Closed    |     N/A     |
          |--------------------------------+-------------+-------------|
          |  2 drives installed (primary)  |     N/A     |   Closed    |
          |--------------------------------+-------------+-------------|
          | 2 drives installed (secondary) |     N/A     |    Open     |
          +------------------------------------------------------------+