NIC TECHNOLOGY, INC.
====================

   SIH433B

   Processor          80486SX/80487SX/80486DX/ODP486SX            
   Processor Speed    16/20/25/33/50(internal)/50/66(internal)MHz 
   Chip Set           UNI                                         
   Max. Onboard DRAM  32MB                                        
   Cache              32/64/128/256KB                             
   BIOS               AMI                                         
   Dimensions         218mm x 218mm                               
   I/O Options        None                                        
   NPU Options        None                                        

<gopher://bitreich.org/I/th99/m/M-O/31365-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | External battery    |    J1    | Turbo LED      |    J5    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |    J3    | Turbo switch   |    J7    |
   |---------------------+----------+----------------+----------|
   | Speaker             |    J4    | Reset switch   |    J8    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | CMOS memory normal operation   |   J1   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CMOS memory clear              |   J1   |     Open     |
   |---+--------------------------------+--------+--------------|
   |   | External battery select        |   J1   |  Connected   |
   |---+--------------------------------+--------+--------------|
   |>> | Monitor type select color      |   J2   |     Open     |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select monochrome |   J2   |    Closed    |
   |---+--------------------------------+--------+--------------|
   |>> | CPU speed select iOSC/1        |   J9   |  pins 1 & 2  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | CPU speed select iOSC/2        |   J9   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       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        |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type    |  J20   |        J21        |        J22        |
   |-----------+--------+-------------------+-------------------|
   |  80486SX  |  Open  | pins 2 & 3 closed |       Open        |
   |-----------+--------+-------------------+-------------------|
   |  80487SX  | Closed | pins 1 & 2 closed | pins 2 & 3 closed |
   |-----------+--------+-------------------+-------------------|
   |  80486DX  | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
   |-----------+--------+-------------------+-------------------|
   | ODP486SX  | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   | TAG (U40)  | TAG (U30)  |
   |-------+-------------+------------+------------+------------|
   | 32KB  | (4) 8K x 8  |    NONE    | (1) 8K x 8 | (1) 16K x  |
   |       |             |            |            |     4      |
   |-------+-------------+------------+------------+------------|
   | 64KB  | (4) 8K x 8  | (4) 8K x 8 | (1) 8K x 8 | (1) 16K x  |
   |       |             |            |            |     4      |
   |-------+-------------+------------+------------+------------|
   | 128KB | (4) 32K x 8 |    NONE    | (1) 32K x  | (1) 16K x  |
   |       |             |            |     8      |     4      |
   |-------+-------------+------------+------------+------------|
   | 256KB | (4) 32K x 8 | (4) 32K x  | (1) 32K x  | (1) 16K x  |
   |       |             |     8      |     8      |     4      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size | J11 | J12 | J13 | J14 | J15 | J16 | J17 | J18 | J19 |
   |------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   | 32KB |1 & 2|open |1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|1 & 2|
   |------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   | 64KB |2 & 3|open |1 & 2|2 &3 |1 & 2|1 & 2|2 &3 |1 & 2|1 & 2|
   |------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |128KB |1 & 2|1 & 2|2 &3 |2 &3 |2 &3 |1 & 2|2 &3 |2 &3 |1 & 2|
   |------+-----+-----+-----+-----+-----+-----+-----+-----+-----|
   |256KB |2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|2 & 3|
   |------------------------------------------------------------|
   |Note:Pins designated should be in the closed position.      |
   +------------------------------------------------------------+