J-MARK COMPUTER CORPORATION
===========================

   386WB CACHE

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

<gopher://bitreich.org/I/th99/m/I-L/30580-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | External battery  |   J10    | 32-bit external  |    S1    |
   |                   |          | memory card      |          |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   J23    | Reset switch     |   SW1    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |   J24    | Turbo switch     |   SW2    |
   |-------------------+----------+------------------+----------|
   | Turbo LED         |   JP4    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Factory configured - do not      |   J3   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP1   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP1   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | 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 3         |
   |-----------+------------------------+-----------------------|
   |    1MB    |      (4) 256K x 9      |         NONE          |
   |-----------+------------------------+-----------------------|
   |    2MB    |      (4) 256K x 9      |     (4) 256K x 9      |
   |-----------+------------------------+-----------------------|
   |    4MB    |       (4) 1M x 9       |         NONE          |
   |-----------+------------------------+-----------------------|
   |    8MB    |       (4) 1M x 9       |      (4) 1M x 9       |
   |-----------+------------------------+-----------------------|
   |   16MB    |       (4) 4M x 9       |         NONE          |
   |-----------+------------------------+-----------------------|
   |   32MB    |       (4) 4M x 9       |      (4) 4M x 9       |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                 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.     |
   +------------------------------------------------------------+