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

   J-7LXA, J-7LXA/L

   Processor        Pentium II                                    
   Processor Speed  200/233/266/300MHz                            
   Chip Set         Intel                                         
   Video Chip Set   None                                          
   Maximum Onboard  1GB (EDO & SDRAM supported)                   
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            256/512KB (located on Pentium II CPU)         
   BIOS             Award                                         
   Dimensions       305mm x 244mm                                 
   I/O Options      32-bit PCI slots (4), floppy drive interface, 
                    green PC connector, IDE interfaces (2),       
                    parallel port, PS/2 mouse port, serial ports  
                    (2), IR connector, USB connectors (2), ATX    
                    power connector, AGP slot                     
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/I-L/34689-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose         | Location | Purpose          |  Location  |
   |-----------------+----------+------------------+------------|
   | ATX power       |   ATX    | IDE interface 1  |    CN6     |
   | connector       |          |                  |            |
   |-----------------+----------+------------------+------------|
   | AGP slot        |   AGP    | IDE interface 2  |    CN7     |
   |-----------------+----------+------------------+------------|
   | Turbo switch    |    C1    | Floppy drive     |    CN8     |
   |                 |          | interface        |            |
   |-----------------+----------+------------------+------------|
   | Power LED &     |    C2    | Serial port 2    |    CN9     |
   | keylock         |          |                  |            |
   |-----------------+----------+------------------+------------|
   | Turbo LED       |    C3    | CPU fan power    |    FAN     |
   |-----------------+----------+------------------+------------|
   | Reset switch    |    C4    | Chassis fan      |    FAN1    |
   |                 |          | power            |            |
   |-----------------+----------+------------------+------------|
   | Speaker         |    C5    | Chassis fan      |    FAN2    |
   |                 |          | power            |            |
   |-----------------+----------+------------------+------------|
   | Serial port 1   |   CN1    | IDE interface    | FRNT2/pins |
   |                 |          | LED              |   1 & 3    |
   |-----------------+----------+------------------+------------|
   | Parallel port   |   CN2    | Green PC         | FRNT2/pins |
   |                 |          | connector        |   2 & 4    |
   |-----------------+----------+------------------+------------|
   | PS/2 mouse port |   CN3    | Soft off power   |   FRNT3    |
   |                 |          | supply           |            |
   |-----------------+----------+------------------+------------|
   | USB connector 1 |   CN4    | IR connector     |    IR1     |
   |-----------------+----------+------------------+------------|
   | USB connector 2 |   CN5    | 32-bit PCI slots | PC1 - PC4  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              | Label |    Position    |
   |-----------------------------------+-------+----------------|
   |   | Flash BIOS voltage select 12v | JERP1 |   Pins 1 & 2   |
   |   |                               |       |     closed     |
   |---+-------------------------------+-------+----------------|
   |   | Flash BIOS voltage select 5v  | JERP1 |   Pins 2 & 3   |
   |   |                               |       |     closed     |
   |---+-------------------------------+-------+----------------|
   |>> | CMOS memory normal operation  | RTC1  |   Pins 2 & 3   |
   |   |                               |       |     closed     |
   |---+-------------------------------+-------+----------------|
   |   | CMOS memory clear             | RTC1  |   Pins 3 & 4   |
   |   |                               |       |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIMM CONFIGURATION                     |
   |------------------------------------------------------------|
   |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
   |--------+------------+------------+------------+------------|
   |  16MB  |  (1) 2M x  |    None    |    None    |    None    |
   |        |     64     |            |            |            |
   |--------+------------+------------+------------+------------|
   |  32MB  |  (1) 2M x  |  (1) 2M x  |    None    |    None    |
   |        |     64     |     64     |            |            |
   |--------+------------+------------+------------+------------|
   |  32MB  |  (1) 4M x  |    None    |    None    |    None    |
   |        |     64     |            |            |            |
   |--------+------------+------------+------------+------------|
   |  48MB  |  (1) 2M x  |  (1) 2M x  |  (1) 2M x  |    None    |
   |        |     64     |     64     |     64     |            |
   |--------+------------+------------+------------+------------|
   |  64MB  |  (1) 2M x  |  (1) 2M x  |  (1) 2M x  |  (1) 2M x  |
   |        |     64     |     64     |     64     |     64     |
   |--------+------------+------------+------------+------------|
   |  64MB  |  (1) 4M x  |  (1) 4M x  |    None    |    None    |
   |        |     64     |     64     |            |            |
   |--------+------------+------------+------------+------------|
   |  64MB  |  (1) 8M x  |    None    |    None    |    None    |
   |        |     64     |            |            |            |
   |--------+------------+------------+------------+------------|
   | 128MB  | (1) 16M x  |    None    |    None    |    None    |
   |        |     64     |            |            |            |
   |--------+------------+------------+------------+------------|
   | 128MB  |  (1) 4M x  |  (1) 4M x  |  (1) 4M x  |  (1) 4M x  |
   |        |     64     |     64     |     64     |     64     |
   |--------+------------+------------+------------+------------|
   | 128MB  |  (1) 8M x  |  (1) 8M x  |    None    |    None    |
   |        |     64     |     64     |            |            |
   |--------+------------+------------+------------+------------|
   | 192MB  |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |    None    |
   |        |     64     |     64     |     64     |            |
   |--------+------------+------------+------------+------------|
   | 256MB  | (1) 16M x  | (1) 16M x  |    None    |    None    |
   |        |     64     |     64     |            |            |
   |--------+------------+------------+------------+------------|
   | 256MB  |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |
   |        |     64     |     64     |     64     |     64     |
   |--------+------------+------------+------------+------------|
   | 256MB  | (1) 32M x  |    None    |    None    |    None    |
   |        |     64     |            |            |            |
   |--------+------------+------------+------------+------------|
   | 384MB  | (1) 16M x  | (1) 16M x  | (1) 16M x  |    None    |
   |        |     64     |     64     |     64     |            |
   |--------+------------+------------+------------+------------|
   | 512MB  | (1) 16M x  | (1) 16M x  | (1) 16M x  | (1) 16M x  |
   |        |     64     |     64     |     64     |     64     |
   |--------+------------+------------+------------+------------|
   | 512MB  | (1) 32M x  | (1) 32M x  |    None    |    None    |
   |        |     64     |     64     |            |            |
   |--------+------------+------------+------------+------------|
   | 768MB  | (1) 32M x  | (1) 32M x  | (1) 32M x  |    None    |
   |        |     64     |     64     |     64     |            |
   |--------+------------+------------+------------+------------|
   | 1024MB | (1) 32M x  | (1) 32M x  | (1) 32M x  | (1) 32M x  |
   |        |     64     |     64     |     64     |     64     |
   |------------------------------------------------------------|
   |      Note: Board accepts EDO & SDRAM memory.               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Note: 256KB/512KB cache is located on the Pentium II CPU.  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |CPU speed|Clock speed|Multiplier|JP1/1 |JP1/2 |JP1/3 |JP1/4 |
   |---------+-----------+----------+------+------+------+------|
   | 200MHz  |   66MHz   |   3.5x   |  On  |  On  |  On  | Off  |
   |---------+-----------+----------+------+------+------+------|
   | 233MHz  |   66MHz   |    4x    |  On  |  On  | Off  | Off  |
   |---------+-----------+----------+------+------+------+------|
   | 266MHz  |   66MHz   |   4.5x   |  On  | Off  |  On  |  On  |
   |---------+-----------+----------+------+------+------+------|
   | 300MHz  |   66MHz   |    5x    |  On  | Off  | Off  |  On  |
   +------------------------------------------------------------+