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       # ADVANCED INTREGRATION RESEARCH, INC.
       
          486UL REV. 1.0
       
          Processor   80486SX/80487SX/80486DX/ODP486SX/80486DX2/ODP586SX 
          Processor   20/25/33/40/50(internal)/50/66(internal)MHz        
          Speed       
          Chip Set    UMC                                                
          Max.        32MB                                               
          onboard     
          DRAM        
          SRAM Cache  64/128/256KB                                       
          BIOS        AMI                                                
          Dimensions  330mm x 220mm                                      
          I/O Options 32-bit external memory card, 32-bit VESA local bus 
                      slots (3)                                          
          NPU Options None                                               
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |    J1    | Turbo switch      |    J6    |
          |------------------+----------+-------------------+----------|
          | Power LED &      |    J3    | Turbo LED         |    J7    |
          | keylock          |          |                   |          |
          |------------------+----------+-------------------+----------|
          | Speaker          |    J4    | 32-bit memory     |    S1    |
          |                  |          | card              |          |
          |------------------+----------+-------------------+----------|
          | Reset            |    J5    | 32-bit VESA local | S2, S3,  |
          |                  |          | bus slots         |   & S4   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Keyboard clock select 8MHz       |  J08   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Keyboard clock select iOSC       |  J08   | pins 2 & 3 |
          |   | derived                          |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP4   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP4   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Onboard battery enabled          |  JP8   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Onboard battery disabled         |  JP8   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |  JP10  |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  JP10  |    Open    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  |     Bank 0      |   Bank 1   |  Bank 2  |  Bank 3  |
          |-------+-----------------+------------+----------+----------|
          |  1MB  |  (4) 256K x 9   |    NONE    |   NONE   |   NONE   |
          |-------+-----------------+------------+----------+----------|
          |  2MB  |  (4) 256K x 9   | (4) 256K x |   NONE   |   NONE   |
          |       |                 |     9      |          |          |
          |-------+-----------------+------------+----------+----------|
          |  3MB  |  (4) 256K x 9   | (4) 256K x | (4) 256K |   NONE   |
          |       |                 |     9      |   x 9    |          |
          |-------+-----------------+------------+----------+----------|
          |  4MB  |  (4) 256K x 9   | (4) 256K x | (4) 256K | (4) 256K |
          |       |                 |     9      |   x 9    |   x 9    |
          |-------+-----------------+------------+----------+----------|
          |  4MB  |   (4) 1M x 9    |    NONE    |   NONE   |   NONE   |
          |-------+-----------------+------------+----------+----------|
          |  5MB  |  (4) 256K x 9   | (4) 1M x 9 |   NONE   |   NONE   |
          |-------+-----------------+------------+----------+----------|
          |  6MB  |  (4) 256K x 9   | (4) 256K x | (4) 1M x |   NONE   |
          |       |                 |     9      |    9     |          |
          |-------+-----------------+------------+----------+----------|
          |  7MB  |  (4) 256K x 9   | (4) 256K x | (4) 256K | (4) 1M x |
          |       |                 |     9      |   x 9    |    9     |
          |-------+-----------------+------------+----------+----------|
          |  8MB  |    (4)1M x 9    | (4)1M x 9  |   NONE   |   NONE   |
          |-------+-----------------+------------+----------+----------|
          |  9MB  |  (4) 256K x 9   | (4) 1M x 9 | (4) 1M x |   NONE   |
          |       |                 |            |    9     |          |
          |-------+-----------------+------------+----------+----------|
          | 10MB  |  (4) 256K x 9   | (4) 256K x | (4) 1M x | (4) 1M x |
          |       |                 |     9      |    9     |    9     |
          |-------+-----------------+------------+----------+----------|
          | 12MB  |   (4) 1M x 9    | (4) 1M x 9 | (4) 1M x |   NONE   |
          |       |                 |            |    9     |          |
          |-------+-----------------+------------+----------+----------|
          | 16MB  |   (4) 1M x 9    | (4) 1M x 9 | (4) 1M x | (4) 1M x |
          |       |                 |            |    9     |    9     |
          |-------+-----------------+------------+----------+----------|
          | 16MB  |   (4) 4M x 9    |    NONE    |   NONE   |   NONE   |
          |-------+-----------------+------------+----------+----------|
          | 20MB  |   (4) 1M x 9    | (4) 4M x 9 |   NONE   |   NONE   |
          |-------+-----------------+------------+----------+----------|
          | 24MB  |   (4) 1M x 9    | (4) 1M x 9 | (4) 4M x |   NONE   |
          |       |                 |            |    9     |          |
          |-------+-----------------+------------+----------+----------|
          | 28MB  |   (4) 1M x 9    | (4) 1M x 9 | (4) 1M x | (4) 4M x |
          |       |                 |            |    9     |    9     |
          |-------+-----------------+------------+----------+----------|
          | 32MB  |    (4)4M x 9    | (4)4M x 9  |   NONE   |   NONE   |
          |-------+-----------------+------------+----------+----------|
          | 36MB  |   (4) 1M x 9    | (4) 4M x 9 | (4) 4M x |   NONE   |
          |       |                 |            |    9     |          |
          |-------+-----------------+------------+----------+----------|
          | 40MB  |   (4) 1M x 9    | (4) 1M x 9 | (4) 4M x | (4) 4M x |
          |       |                 |            |    9     |    9     |
          |-------+-----------------+------------+----------+----------|
          | 48MB  |   (4) 4M x 9    | (4) 4M x 9 | (4) 4M x |   NONE   |
          |       |                 |            |    9     |          |
          |-------+-----------------+------------+----------+----------|
          | 64MB  |   (4) 4M x 9    | (4) 4M x 9 | (4) 4M x | (4) 4M x |
          |       |                 |            |    9     |    9     |
          |------------------------------------------------------------|
          | Note: Banks 2 & 3 are located on the optional external     |
          | memory card inserted into S1.                              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |       CPU        |    JP1     |         JP2         | JP3  |
          |------------------+------------+---------------------+------|
          |     80486SX      |    Open    |  pins 2 & 3 closed  | Open |
          |------------------+------------+---------------------+------|
          | 80487SX/ODP486SX | pins 2 & 3 |  pins 1 & 2, 3 & 4  | Open |
          |                  |   closed   |       closed        |      |
          |------------------+------------+---------------------+------|
          |   80486DX/DX2    | pins 1 & 2 |  pins 1 & 2, 3 & 4  | Open |
          |                  |   closed   |       closed        |      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Speed    |    J03    |    J04    |    J05    |    J06    |
          |------------+-----------+-----------+-----------+-----------|
          |   20MHz    |  Closed   |  Closed   |  Closed   |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          | 25/50i MHz |  Closed   |  Closed   |   Open    |  Closed   |
          |------------+-----------+-----------+-----------+-----------|
          | 33/66i MHz |  Closed   |   Open    |  Closed   |  Closed   |
          |------------+-----------+-----------+-----------+-----------|
          |   40MHz    |   Open    |   Open    |  Closed   |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |   50MHz    |   Open    |   Open    |   Open    |   Open    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       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  |  JP13  |  JP14  |  JP16  |  JP17  |  JP18  | JP19  |
          |-------+--------+--------+--------+--------+--------+-------|
          | 64KB  | pins 1 | pins 1 | pins 1 | pins 1 | pins 1 | pins  |
          |       |  & 2   |  & 2   |  & 2   |  & 2   |  & 2   | 1 & 2 |
          |-------+--------+--------+--------+--------+--------+-------|
          | 128KB | pins 2 | pins 1 | pins 2 | pins 1 | pins 2 | pins  |
          |       |  & 3   |  & 2   |  & 3   |  & 2   |  & 3   | 1 & 2 |
          |-------+--------+--------+--------+--------+--------+-------|
          | 256KB | pins 1 | pins 2 | pins 2 | pins 2 | pins 2 | pins  |
          |       |  & 2   |  & 3   |  & 3   |  & 3   |  & 3   | 2 & 3 |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             VESA BUS SPEED (ID3) CONFIGURATION             |
          |------------------------------------------------------------|
          |          CPU speed          |          JP23 (ID3)          |
          |-----------------------------+------------------------------|
          |           <=33MHz           |             Open             |
          |-----------------------------+------------------------------|
          |           >33MHz            |            Closed            |
          +------------------------------------------------------------+