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       # ATC/UNITRON COMPUTERS & COMPUTER PARTS
       
          U 6992 (SQ599)
       
          Processor    Pentium                                           
          Processor    75/90/100/120/133/150MHz                          
          Speed        
          Chip Set     SIS                                               
          Max. Onboard 128MB                                             
          DRAM         
          Cache        256/512/1024KB                                    
          BIOS         Award                                             
          Dimensions   330mm x 218mm                                     
          I/O Options  32-bit PCI slots (3), floppy drive interface,     
                       green PC connector, IDE interfaces (2), parallel  
                       port, PS/2 mouse interface, serial ports (2), VGA 
                       feature connector, VGA interface, IR connector,   
                       IRDA connector                                    
          NPU Options  None                                              
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | VGA interface     |    J3    | Green PC         |   J13    |
          |                   |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | Parallel port     |    J4    | Power LED &      |   J16    |
          |                   |          | keylock          |          |
          |-------------------+----------+------------------+----------|
          | Serial port 1     |    J5    | Green PC LED     |   J17    |
          |-------------------+----------+------------------+----------|
          | Serial port 2     |    J6    | IDE interface    |   J18    |
          |                   |          | LED              |          |
          |-------------------+----------+------------------+----------|
          | VGA feature       |    J7    | Turbo LED        |   J20    |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | IDE interface 2   |    J8    | Speaker          |   J21    |
          |-------------------+----------+------------------+----------|
          | IDE interface 1   |    J9    | IRDA connector   |   J22    |
          |-------------------+----------+------------------+----------|
          | Floppy drive      |   J10    | PS/2 mouse       |   J23    |
          | interface         |          | interface        |          |
          |-------------------+----------+------------------+----------|
          | Reset switch      |   J11    | External battery |   JP20   |
          |-------------------+----------+------------------+----------|
          | IR remote         |   J12    | 32-bit PCI slots |  PC1 -   |
          | connector         |          |                  |   PC3    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          |   | Monitor type select color        |  JP1   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  JP1   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP19  | Pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP19  | Pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP24  |    N/A     |
          |   | alter                            |        |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 4MB  | (1) 1M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 2M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 8MB  | (1) 1M x 36 | (1) 1M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 4M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 16MB | (1) 2M x 36 | (1) 2M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 24MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 8M x 36 |    None     |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 32MB | (1) 4M x 36 | (1) 4M x 36 |    None    |    None    |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |  (1) 1M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 2M x 36 | (1) 2M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 2M x  |  (1) 2M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 8M x 36 | (1) 8M x 36 |    None    |    None    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON'T)                 |
          |------------------------------------------------------------|
          | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
          |-------+-------------+------------+------------+------------|
          | 72MB  | (1) 8M x 36 |  (1) 8M x  |  (1) 1M x  |  (1) 1M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 72MB  | (1) 1M x 36 |  (1) 1M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 80MB  | (1) 2M x 36 |  (1) 2M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 80MB  | (1) 8M x 36 |  (1) 8M x  |  (1) 2M x  |  (1) 2M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 96MB  | (1) 4M x 36 |  (1) 4M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 96MB  | (1) 8M x 36 |  (1) 8M x  |  (1) 4M x  |  (1) 4M x  |
          |       |             |     36     |     36     |     36     |
          |-------+-------------+------------+------------+------------|
          | 128MB | (1) 8M x 36 |  (1) 8M x  |  (1) 8M x  |  (1) 8M x  |
          |       |             |     36     |     36     |     36     |
          |------------------------------------------------------------|
          | Note: Board accepts EDO memory.                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |        TAG         |
          |------------------+--------------------+--------------------|
          |      256KB       |    (8) 32K x 8     |    (1) 32K x 8     |
          |------------------+--------------------+--------------------|
          |      512KB       |    (8) 64K x 8     |    (1) 32K x 8     |
          |------------------+--------------------+--------------------|
          |       1MB        |    (8) 128K x 8    |    (1) 32K x 8     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |       Size       |        JP21        |        JP22        |
          |------------------+--------------------+--------------------|
          |      256KB       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |      512KB       | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |       1MB        | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Speed    |   J14    |    J15     |   JP16    |   JP17    |
          |------------+----------+------------+-----------+-----------|
          |   75MHz    |   Open   |    Open    |   Open    |  Closed   |
          |------------+----------+------------+-----------+-----------|
          |   90MHz    |   Open   |    Open    |  Closed   |   Open    |
          |------------+----------+------------+-----------+-----------|
          |   100MHz   |   Open   |    Open    |  Closed   |  Closed   |
          |------------+----------+------------+-----------+-----------|
          |   120MHz   |   Open   |   Closed   |  Closed   |   Open    |
          |------------+----------+------------+-----------+-----------|
          |   133MHz   |   Open   |   Closed   |  Closed   |  Closed   |
          |------------+----------+------------+-----------+-----------|
          |   150MHz   |   Open   |   Closed   |   Open    |   Open    |
          +------------------------------------------------------------+