(TXT) View Source
       
       # AIM MOTHERBOARD COMPANY
       
          AIM486CQ
       
          Processor         80486SX/80487SX/80486DX                      
          Processor Speed   20/25/33/50MHz                               
          Chip Set          VLSI                                         
          Max. onboard DRAM 32MB                                         
          Cache             64/128/256KB                                 
          BIOS              AMI                                          
          Dimensions        330mm x 218mm                                
          I/O Options       None                                         
          NPU Options       4167                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | External battery |   JP5    | Reset switch      |   JP32   |
          |------------------+----------+-------------------+----------|
          | Turbo switch     |   JP30   | Speaker           |   JP33   |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |   JP31   | Power LED &       |   JP34   |
          |                  |          | keylock           |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | » | Monitor type select color |      JP1      |   Closed   |
          |---+---------------------------+---------------+------------|
          |   | Monitor type select       |      JP1      |    Open    |
          |   | monochrome                |               |            |
          |---+---------------------------+---------------+------------|
          | » | CMOS memory normal        |      JP6      | pins 1 & 2 |
          |   | operation                 |               |   closed   |
          |---+---------------------------+---------------+------------|
          |   | CMOS memory clear         |      JP6      | pins 2 & 3 |
          |   |                           |               |   closed   |
          |---+---------------------------+---------------+------------|
          | » | NPU select 0 wait states  |     JP18      |    Open    |
          |---+---------------------------+---------------+------------|
          |   | NPU select 1 wait state   |     JP18      |   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        |
          |------------------+--------------------+--------------------|
          |       5MB        |    (4) 256K x 9    |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       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     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 4   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 4   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 4  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |  JP11  |  JP12  |  JP13  |  JP14  |  JP40  | JP41  |
          |-------+--------+--------+--------+--------+--------+-------|
          | 64KB  |  Open  |  Open  |  Open  |  Open  |  Open  | pins  |
          |       |        |        |        |        |        | 2 & 3 |
          |-------+--------+--------+--------+--------+--------+-------|
          | 128KB |  Open  | pins 1 | pins 2 | Closed |  Open  | pins  |
          |       |        |  & 2   |  & 3   |        |        | 1 & 2 |
          |-------+--------+--------+--------+--------+--------+-------|
          | 256KB | Closed | pins 1 | pins 1 | Closed | Closed | pins  |
          |       |        |  & 2   |  & 2   |        |        | 2 & 3 |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Speed    |       JP15        |    JP22     |    JP23     |
          |------------+-------------------+-------------+-------------|
          |   20MHz    | pins 2 & 3 closed |    Open     |    Open     |
          |------------+-------------------+-------------+-------------|
          |   25MHz    | pins 1 & 2 closed |   Closed    |    Open     |
          |------------+-------------------+-------------+-------------|
          |   33MHz    | pins 1 & 2 closed |    Open     |   Closed    |
          |------------+-------------------+-------------+-------------|
          |   50MHz    | pins 1 & 2 closed |   Closed    |   Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |  TYPE   |        JP2        |    JP3     |  JP7   |  JP8   |
          |---------+-------------------+------------+--------+--------|
          | 80486SX |       Open        | pins 2 & 3 |  Open  | Closed |
          |         |                   |   closed   |        |        |
          |---------+-------------------+------------+--------+--------|
          | 80487SX | pins 1 & 2 closed | pins 1 & 2 | Closed |  Open  |
          |         |                   |   closed   |        |        |
          |---------+-------------------+------------+--------+--------|
          | 80486DX | pins 2 & 3 closed | pins 2 & 3 |  Open  | Closed |
          |         |                   |   closed   |        |        |
          +------------------------------------------------------------+