DD & TT ENTERPRISE USA COMPANY
==============================

   DT-340P

   Processor             80386DX                                  
   Processor Speed       33/40MHz                                 
   Chip Set              OPTI                                     
   Max. Onboard DRAM     32MB                                     
   Cache                 32/64/128/256KB                          
   BIOS                  AMI/MR                                   
   Dimensions            330mm x 218mm                            
   I/O Options           32-bit external memory card slot         
   NPU Options           80387/3167                               

<gopher://bitreich.org/I/th99/m/C-D/30997-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose               | Location | Purpose      | Location |
   |-----------------------+----------+--------------+----------|
   | 32-bit external       |   CN1    | Turbo LED    |   JP4    |
   | memory card           |          |              |          |
   |-----------------------+----------+--------------+----------|
   | External battery      |   J10    | Reset switch |   SW1    |
   |-----------------------+----------+--------------+----------|
   | Power LED & keylock   |   J23    | Turbo switch |   SW2    |
   |-----------------------+----------+--------------+----------|
   | Speaker               |   J24    |              |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Password check enabled (used     |  JP1   |   Closed   |
   |   | with MR BIOS only)               |        |            |
   |---+----------------------------------+--------+------------|
   |   | Password check disabled (used    |  JP1   |    Open    |
   |   | with MR BIOS only)               |        |            |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP2   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP2   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Bus speed select ATCLK/8         |  JP3   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Bus speed select ATCLK/6         |  JP3   |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       5MB        |     (4) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |    TAG     | TAG (U42)  |
   |-------+-------------+------------+------------+------------|
   | 32KB  | (4) 8K x 8  |    NONE    | (2) 4K x 4 | (1) 16K x  |
   |       |             |            |            |     1      |
   |-------+-------------+------------+------------+------------|
   | 64KB  | (4) 8K x 8  | (4) 8K x 8 | (2) 16K x  | (1) 16K x  |
   |       |             |            |     4      |     1      |
   |-------+-------------+------------+------------+------------|
   | 128KB | (4) 32K x 8 |    NONE    | (2) 16K x  | (1) 16K x  |
   |       |             |            |     4      |     1      |
   |-------+-------------+------------+------------+------------|
   | 256KB | (4) 32K x 8 | (4) 32K x  | (2) 16K x  | (1) 16K x  |
   |       |             |     8      |     4      |     1      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size  |  JP5   |  JP6   |  JP7   |  JP8   |  JP9  | JP10  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  32KB  | 1 & 2  | 1 & 2  | 1 & 2  |  Open  | 2 & 3 | 2 & 3 |
   |--------+--------+--------+--------+--------+-------+-------|
   |  64KB  | 2 & 3  | 1 & 2  | 1 & 2  |  Open  | 2 & 3 | 1 & 2 |
   |--------+--------+--------+--------+--------+-------+-------|
   | 128KB  | 2 & 3  | 1 & 2  | 2 & 3  | Closed | 2 & 3 | 1 & 2 |
   |--------+--------+--------+--------+--------+-------+-------|
   | 256KB  | 2 & 3  | 2 & 3  | 2 & 3  | Closed | 1 & 2 | 1 & 2 |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+