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       # J-MARK COMPUTER CORPORATION
       
          J-597A
       
          Device Type      Mainboard                                     
          Processor        CX 6X86/IBM 6X86/CX 686MX/IDT C6/AM K5/AM     
                           K6/Pentium/Pentium MMX                        
          Processor Speed  90/100/120/133/150/166/180/200/233/266/300MHz 
          Chip Set         VIA VP3                                       
          Maximum Onboard  384MB (EDO & SDRAM supported)                 
          Memory           
          Cache            512/1024KB                                    
          BIOS             Unidentified                                  
          Dimensions       220mm x 170mm                                 
          I/O Options      32-bit PCI slots (4), floppy drive interface, 
                           IDE interfaces (2), parallel port, PS/2 mouse 
                           interface, serial ports (2), IR connector,    
                           USB connector, ATX power connector, AGP slot  
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | AGP slot          |   AGP    | PS/2 mouse       |   CN2    |
          |                   |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | ATX power         |   ATX    | Serial port 2    |   CN4    |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Turbo LED         |    C1    | Serial port 1    |   CN5    |
          |-------------------+----------+------------------+----------|
          | Reset switch      |    C2    | IDE interface 2  |   CN6    |
          |-------------------+----------+------------------+----------|
          | Speaker           |    C3    | IDE interface 1  |   CN7    |
          |-------------------+----------+------------------+----------|
          | Turbo switch      |    C4    | Floppy drive     |   CN8    |
          |                   |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | Power LED &       |    C5    | Parallel port    |   CN9    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | IDE interface LED |    C6    | IR connector     |   IR1    |
          |-------------------+----------+------------------+----------|
          | Soft off power    |    C7    | 32-bit PCI slots |  PC1 –   |
          | supply            |          |                  |   PC4    |
          |-------------------+----------+------------------+----------|
          | CPU fan power     |    C8    | USB connector    |   USB    |
          |-------------------+----------+------------------+----------|
          | CPU fan power     |    C9    |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Label |   Position   |
          |-------------------------------------+-------+--------------|
          | » | CMOS memory normal operation    |  J3   |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | CMOS memory clear               |  J3   |  Pins 3 & 4  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | Flash BIOS voltage select 12v   |  JP1  |  Pins 1 & 2  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          |   | Flash BIOS voltage select 5v    |  JP1  |  Pins 2 & 3  |
          |   |                                 |       |    closed    |
          |---+---------------------------------+-------+--------------|
          | » | Factory configured - do not     |  JP2  | Unidentified |
          |   | alter                           |       |              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |            8MB             |          (2) 1M x 36          |
          |----------------------------+-------------------------------|
          |            16MB            |          (2) 2M x 36          |
          |----------------------------+-------------------------------|
          |            32MB            |          (2) 4M x 36          |
          |----------------------------+-------------------------------|
          |            64MB            |          (2) 8M x 36          |
          |----------------------------+-------------------------------|
          |           128MB            |         (2) 16M x 36          |
          |------------------------------------------------------------|
          |      Note: Board accepts EDO memory.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIMM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size     |    Bank 0     |    Bank 1     |    Bank 2    |
          |-------------+---------------+---------------+--------------|
          |     8MB     |  (1) 1M x 64  |     None      |     None     |
          |-------------+---------------+---------------+--------------|
          |    16MB     |  (1) 2M x 64  |     None      |     None     |
          |-------------+---------------+---------------+--------------|
          |    16MB     |  (1) 1M x 64  |  (1) 1M x 64  |     None     |
          |-------------+---------------+---------------+--------------|
          |    24MB     |  (1) 2M x 64  |  (1) 1M x 64  |     None     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DIMM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (1) 1M x 64  |  (1) 1M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (1) 4M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (1) 2M x 64  |  (1) 1M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (1) 2M x 64  |  (1) 2M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |    40MB    |  (1) 4M x 64  |  (1) 1M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |    40MB    |  (1) 2M x 64  |  (1) 2M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |    48MB    |  (1) 4M x 64  |  (1) 1M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (1) 8M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (1) 4M x 64  |  (1) 2M x 64  |  (1) 2M x 64  |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (1) 4M x 64  |  (1) 4M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |    72MB    |  (1) 8M x 64  |  (1) 1M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |    80MB    |  (1) 4M x 64  |  (1) 4M x 64  |  (1) 2M x 64  |
          |------------+---------------+---------------+---------------|
          |    88MB    |  (1) 8M x 64  |  (1) 2M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |    96MB    |  (1) 8M x 64  |  (1) 2M x 64  |  (1) 2M x 64  |
          |------------+---------------+---------------+---------------|
          |    96MB    |  (1) 4M x 64  |  (1) 4M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   104MB    |  (1) 8M x 64  |  (1) 4M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |   128MB    | (1) 16M x 64  |     None      |     None      |
          |------------+---------------+---------------+---------------|
          |   128MB    |  (1) 8M x 64  |  (1) 4M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   128MB    |  (1) 8M x 64  |  (1) 8M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   136MB    | (1) 16M x 64  |  (1) 1M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   136MB    |  (1) 8M x 64  |  (1) 8M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |   144MB    | (1) 16M x 64  |  (1) 1M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |   144MB    | (1) 16M x 64  |  (1) 2M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   144MB    |  (1) 8M x 64  |  (1) 8M x 64  |  (1) 2M x 64  |
          |------------+---------------+---------------+---------------|
          |   152MB    | (1) 16M x 64  |  (1) 2M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |   160MB    | (1) 16M x 64  |  (1) 2M x 64  |  (1) 2M x 64  |
          |------------+---------------+---------------+---------------|
          |   160MB    | (1) 16M x 64  |  (1) 4M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   160MB    |  (1) 8M x 64  |  (1) 8M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   168MB    | (1) 16M x 64  |  (1) 4M x 64  |  (1) 1M x 64  |
          |------------+---------------+---------------+---------------|
          |   192MB    | (1) 16M x 64  |  (1) 4M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   192MB    | (1) 16M x 64  |  (1) 8M x 64  |     None      |
          |------------+---------------+---------------+---------------|
          |   192MB    |  (1) 8M x 64  |  (1) 8M x 64  |  (1) 8M x 64  |
          |------------+---------------+---------------+---------------|
          |   224MB    | (1) 16M x 64  |  (1) 8M x 64  |  (1) 4M x 64  |
          |------------+---------------+---------------+---------------|
          |   256MB    | (1) 16M x 64  |  (1) 8M x 64  |  (1) 8M x 64  |
          |------------+---------------+---------------+---------------|
          |   384MB    | (1) 16M x 64  | (1) 16M x 64  | (1) 16M x 64  |
          |------------------------------------------------------------|
          |      Note: Board accepts SDRAM memory.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |        TAG         |
          |------------------+--------------------+--------------------|
          |      512KB       |    (2) 32K x 64    |    (1) 32K x 8     |
          |------------------+--------------------+--------------------|
          |       1MB        |    (2) 64K x 64    |    (1) 32K x 8     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU SPEED SELECTION (CX 6X86)                |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          | 150MHz  |  60MHz  |    2x    | On |Off |Off | On |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 166MHz  |  66MHz  |    2x    | On |Off |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 200MHz  |  75MHz  |    2x    | On |Off |Off |Off | On |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU SPEED SELECTION (IBM 6X86)               |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          | 150MHz  |  60MHz  |    2x    | On |Off |Off | On |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 166MHz  |  66MHz  |    2x    | On |Off |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 200MHz  |  75MHz  |    2x    | On |Off |Off |Off | On |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU SPEED SELECTION (CX 6X86MX)               |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          | 166MHz  |  60MHz  |   2.5x   | On | On |Off | On |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 200MHz  |  66MHz  |   2.5x   | On | On |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 200MHz  |  75MHz  |    2x    | On |Off |Off |Off | On |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 233MHz  |  66MHz  |    3x    |Off | On |Off |Off |Off |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (IDT C6)                |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          | 150MHz  |  75MHz  |    2x    | On |Off |Off |Off | On |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 180MHz  |  60MHz  |    3x    |Off | On |Off | On |Off |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (AM K5)                 |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          |  90MHz  |  60MHz  |   1.5x   |Off |Off |Off | On |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 100MHz  |  66MHz  |   1.5x   |Off |Off |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 133MHz  |  66MHz  |   1.5x   |Off |Off |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 166MHz  |  66MHz  |   2.5x   | On | On |Off |Off |Off |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (AM K6)                 |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          | 166MHz  |  66MHz  |   2.5x   | On | On |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 200MHz  |  66MHz  |    3x    |Off | On |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 233MHz  |  66MHz  |   3.5x   |Off |Off |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 266MHz  |  66MHz  |    4x    | On |Off | On |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 300MHz  |  66MHz  |   4.5x   | On | On | On |Off |Off |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CPU SPEED SELECTION (INTEL)                 |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          |  90MHz  |  60MHz  |   1.5x   |Off |Off |Off | On |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 100MHz  |  66MHz  |   1.5x   |Off |Off |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 120MHz  |  60MHz  |    2x    | On |Off |Off | On |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 133MHz  |  66MHz  |    2x    | On |Off |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 150MHz  |  60MHz  |   2.5x   | On | On |Off | On |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 166MHz  |  66MHz  |   2.5x   | On | On |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 200MHz  |  66MHz  |    3x    |Off | On |Off |Off |Off |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU SPEED SELECTION (INTEL MMX)               |
          |------------------------------------------------------------|
          |CPU speed|  Clock  |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
          |         |  speed  |          |    |    |    |    |    |    |
          |---------+---------+----------+----+----+----+----+----+----|
          | 166MHz  |  66MHz  |   2.5x   | On | On |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 200MHz  |  66MHz  |    3x    |Off | On |Off |Off |Off |Off |
          |---------+---------+----------+----+----+----+----+----+----|
          | 233MHz  |  66MHz  |   3.5x   |Off |Off |Off |Off |Off |Off |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU VOLTAGE SELECTION                    |
          |------------------------------------------------------------|
          |  Voltage   |   J4/1    |   J4/2    |   J4/3    |   J4/4    |
          |------------+-----------+-----------+-----------+-----------|
          |    Auto    |    Off    |    Off    |    Off    |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |    2.1v    |    On     |    Off    |    Off    |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |    2.2v    |    Off    |    On     |    Off    |    Off    |
          |------------+-----------+-----------+-----------+-----------|
          |    2.8v    |    Off    |    Off    |    Off    |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |    2.9v    |    On     |    Off    |    Off    |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |    3.2v    |    Off    |    Off    |    On     |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |    3.3v    |    On     |    Off    |    On     |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   3.45v    |    Off    |    On     |    On     |    On     |
          |------------+-----------+-----------+-----------+-----------|
          |   3.52v    |    On     |    On     |    On     |    On     |
          +------------------------------------------------------------+