TULIP COMPUTERS
===============

   TULIP VISION LINE DT 486SX-25/DT 486DX-33I/DT 486DX-50I/

   DT 486DX-66I/DT 486SX-33/DC 486SX-25/DC 486DX-33I/

   WS 486SX-25/WS 486DX-33I

   Processor    80486SX/80487SX/80486DX/80486DX2/OverDrive        
                DX2/OverDrive DX2 R                               
   Processor    25/33/50 (internal)/66iMHz                        
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 20MB                                              
   DRAM         
   Cache        None                                              
   BIOS         Unidentified                                      
   Dimensions   280mm x 254mm                                     
   I/O Options  Parallel port, serial ports (2), VGA port, VGA    
                feature connector, floppy drive interface, IDE    
                interface                                         
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/S-T/32435-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose               | Location | Purpose      | Location |
   |-----------------------+----------+--------------+----------|
   | Serial port 1         |    J1    | VGA port     |    J6    |
   |-----------------------+----------+--------------+----------|
   | LED, speaker, &       |    J2    | VGA feature  |    J9    |
   | battery               |          | connector    |          |
   |-----------------------+----------+--------------+----------|
   | IDE interface         |    J3    | Floppy drive |   J10    |
   |                       |          | interface    |          |
   |-----------------------+----------+--------------+----------|
   | Serial port 2         |    J4    | Extra fan    |   J13    |
   |                       |          | connector    |          |
   |-----------------------+----------+--------------+----------|
   | Parallel port         |    J5    |              |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Battery type select internal     |  J14   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Battery type select external     |  J14   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Parallel mode bidirectional      |  J15   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Parallel mode unidirectional     |  J15   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  J17   | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | PQFP CPU enabled                 |  J18   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | PQFP CPU disabled                |  J18   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Size       |      Bank 0      |        Bank 1         |
   |-----------------+------------------+-----------------------|
   |       4MB       |       4MB        |         NONE          |
   |-----------------+------------------+-----------------------|
   |       8MB       |       4MB        |      (4) 1MB x 9      |
   |-----------------+------------------+-----------------------|
   |      20MB       |       4MB        |      (4) 4MB x 9      |
   |------------------------------------------------------------|
   |      Note:Bank 0 is factory installed on the board and can |
   |      not be changed. Its exact location and configuration  |
   |      is unidentified.                                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     VRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Size      |     Bank 0      |           U6            |
   |----------------+-----------------+-------------------------|
   |     512KB      |      512KB      |          NONE           |
   |----------------+-----------------+-------------------------|
   |      1MB       |      512KB      |    (1) 512K x 8 ZIP     |
   |------------------------------------------------------------|
   |      Note:Bank 0 is factory installed on the board and can |
   |      not be changed. Its exact location and configuration  |
   |      is unidentified.                                      |
   +------------------------------------------------------------+