ADVANCED INTEGRATED RESEARCH, INC.
==================================

   486SH REV. 1.1

   Processor    80486SX/80487SX/80486DX/80486DX2/Pentium          
                Overdrive                                         
   Processor    20/25/33/40/50(Internal)/50/66(Internal)MHz       
   Speed        
   Chip Set     SIS                                               
   Max. Onboard 32MB                                              
   DRAM         
   Cache        64/128/256KB                                      
   BIOS         AMI                                               
   Dimensions   330mm x 218mm                                     
   I/O Options  32-bit VESA local bus slots (3)                   

<gopher://bitreich.org/I/th99/m/A-B/31694-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | External battery  |    J1    | Turbo switch     |    J5    |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J2    | Turbo LED        |    J6    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J3    | 32-bit VESA      | S1, S2,  |
   |                   |          | Local bus slots  |   & S3   |
   |-------------------+----------+------------------+----------|
   | Reset switch      |    J4    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select monochrome,  |  JP7   |    Open    |
   |   | VGA or EGA                       |        |            |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select CGA          |  JP7   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP10  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP10  | 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 x9      |        NONE         |
   |----------------+---------------------+---------------------|
   |      8MB       |      (4) 1M x9      |      (4) 1M x9      |
   |----------------+---------------------+---------------------|
   |      16MB      |     (4) 4M x 9      |        NONE         |
   |----------------+---------------------+---------------------|
   |      20MB      |      (4) 1M x9      |     (4) 4M x 9      |
   |----------------+---------------------+---------------------|
   |      32MB      |     (4) 4M x 9      |     (4) 4M x 9      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |    TAG/U36    |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 32K x 8  |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  |    JP1     |   JP2    |   JP3    |  JP20  |  JP21  |
   |-------+------------+----------+----------+--------+--------|
   | 64KB  | pins 1 & 2 | pins 2 & | pins 1 & | pins 1 | pins 1 |
   |       |            |    3     |    2     |  & 2   |  & 2   |
   |-------+------------+----------+----------+--------+--------|
   | 128KB | pins 1 & 2 | pins 1 & | pins 2 & | pins 1 | pins 2 |
   |       |            |    2     |    3     |  & 2   |  & 3   |
   |-------+------------+----------+----------+--------+--------|
   | 256KB | pins 2 & 3 | pins 2 & | pins 2 & | pins 2 | pins 2 |
   |       |            |    3     |    3     |  & 3   |  & 3   |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |      Type      |    JP15    |    JP16    |  JP18  |  JP19  |
   |----------------+------------+------------+--------+--------|
   |  486SX (PGA)   | pins 2 & 3 |    Open    |  Open  | Closed |
   |                |   closed   |            |        |        |
   |----------------+------------+------------+--------+--------|
   | 80486SX (PQFP) | pins 2 & 3 |    Open    |  Open  |  Open  |
   |                |   closed   |            |        |        |
   |----------------+------------+------------+--------+--------|
   |    80487SX     | pins 1 & 2 | pins 2 & 3 | Closed | Closed |
   |                |   closed   |   closed   |        |        |
   |----------------+------------+------------+--------+--------|
   |    80486DX     | pins 1 & 2 | pins 1 & 2 | Closed | Closed |
   |                |   closed   |   closed   |        |        |
   |----------------+------------+------------+--------+--------|
   |    ODP486SX    | pins 1 & 2 | pins 2 & 3 | Closed | Closed |
   |                |   closed   |   closed   |        |        |
   |----------------+------------+------------+--------+--------|
   |    80486DX2    | pins 1 & 2 | pins 1 & 2 | Closed | Closed |
   |                |   closed   |   closed   |        |        |
   |----------------+------------+------------+--------+--------|
   |    Pentium     | pins 1 & 2 | pins 1 & 2 | Closed | Closed |
   |   Overdrive    |   closed   |   closed   |        |        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |  Speed   |   JP5   |  JP11   |  JP12   |       JP14        |
   |----------+---------+---------+---------+-------------------|
   |  20MHz   |  Open   |  Open   | Closed  | pins 1 & 2 closed |
   |----------+---------+---------+---------+-------------------|
   |  25MHz   | Closed  | Closed  |  Open   | pins 1 & 2 closed |
   |----------+---------+---------+---------+-------------------|
   |  33MHz   | Closed  |  Open   |  Open   | pins 1 & 2 closed |
   |----------+---------+---------+---------+-------------------|
   |  40MHz   |  Open   | Closed  |  Open   | pins 2 & 3 closed |
   |----------+---------+---------+---------+-------------------|
   | 50i MHz  | Closed  | Closed  |  Open   | pins 1 & 2 closed |
   |----------+---------+---------+---------+-------------------|
   |  50MHz   |  Open   |  Open   |  Open   | pins 2 & 3 closed |
   |----------+---------+---------+---------+-------------------|
   | 66i MHz  | Closed  |  Open   |  Open   | pins 1 & 2 closed |
   +------------------------------------------------------------+