TANDON CORPORATION
==================

   TOWER486

   Processor    80486SX                                           
   Processor    25/33MHz                                          
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 64MB (4MB or 8MB installed on board)              
   DRAM         
   Cache        None                                              
   BIOS         Unidentified                                      
   Dimensions   355mm x 305mm                                     
   I/O Options  External memory card, floppy drive interface, IDE 
                interface                                         
   NPU Options  4167                                              

<gopher://bitreich.org/I/th99/m/S-T/33081-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | IDE interface     |   CN1    | External battery |    J8    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   CN2    | External memory  |   SL1    |
   | interface         |          | card             |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Switch | Position |
   |----------------------------------------+--------+----------|
   |>> | 256KB - 512KB memory override      | SW1/1  |   Off    |
   |   | disabled                           |        |          |
   |---+------------------------------------+--------+----------|
   |   | 256KB - 512KB memory override      | SW1/1  |    On    |
   |   | enabled                            |        |          |
   |---+------------------------------------+--------+----------|
   |>> | 512KB - 640KB memory override      | SW1/2  |   Off    |
   |   | disabled                           |        |          |
   |---+------------------------------------+--------+----------|
   |   | 512KB - 640KB memory override      | SW1/2  |    On    |
   |   | enabled                            |        |          |
   |---+------------------------------------+--------+----------|
   |>> | Security enabled                   | SW1/3  |   Off    |
   |---+------------------------------------+--------+----------|
   |   | Security disabled                  | SW1/3  |    On    |
   |---+------------------------------------+--------+----------|
   |>> | Factory configured - do not alter  | SW1/4  |   Off    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             DRAM CONFIGURATION (EXTERNAL CARD)             |
   |------------------------------------------------------------|
   |     Size     |        Bank 0         |       Bank 1        |
   |--------------+-----------------------+---------------------|
   |     2MB      |     (8) 256K x 9      |        NONE         |
   |--------------+-----------------------+---------------------|
   |     4MB      |     (8) 256K x 9      |    (8) 256K x 9     |
   |--------------+-----------------------+---------------------|
   |     8MB      |      (8) 1M x 9       |        NONE         |
   |--------------+-----------------------+---------------------|
   |     10MB     |      (8) 1M x 9       |    (8) 256K x 9     |
   |--------------+-----------------------+---------------------|
   |     16MB     |      (8) 1M x 9       |     (8) 1M x 9      |
   |--------------+-----------------------+---------------------|
   |     32MB     |      (8) 4M x 9       |        NONE         |
   |--------------+-----------------------+---------------------|
   |     34MB     |      (8) 4M x 9       |    (8) 256K x 9     |
   |--------------+-----------------------+---------------------|
   |     40MB     |      (8) 4M x 9       |     (8) 1M x 9      |
   |--------------+-----------------------+---------------------|
   |     64MB     |      (8) 4M x 9       |     (8) 4M x 9      |
   |------------------------------------------------------------|
   |      Note: Board is factory installed with either 4MB or   |
   |      8MB. The location of the memory is unidentified. If   |
   |      memory card is installed, the on board memory is      |
   |      disabled.                                             |
   +------------------------------------------------------------+