(TXT) View Source
       
       # UNIDENTIFIED
       
          MB1433FA
       
          Processor         80486SX/80487SX/80486DX/80486DX2             
          Processor Speed   25/33/40/50(internal)/50/66(internal)MHz     
          Chip Set          Unidentified                                 
          Max. Onboard DRAM 32MB                                         
          Cache             32/64/128/256KB                              
          BIOS              AMI                                          
          Dimensions        254mm x 220mm                                
          I/O Options       None                                         
          NPU Options       4167                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Power LED &       |    J1    | Reset switch     |    J4    |
          | keylock           |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Speaker           |    J2    | Turbo switch     |    J5    |
          |-------------------+----------+------------------+----------|
          | Turbo LED         |    J3    | External battery |   JP17   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Keyboard BIOS pin size select 23 |  JP3   | pins 1 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Keyboard BIOS pin size select 30 |  JP3   | pins 2 & 4 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select monochrome   |  JP4   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select color        |  JP4   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | Chip type select 146818          |  JP7   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Chip type select Dallas          |  JP7   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JP11  | pins 2 & 4 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JP11  | pins 1 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Fuse enabled                     |  JPE   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | Fuse disabled                    |  JPE   |   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      |
          |------------+---------------+---------------+---------------|
          |    32KB    |  (4) 8K x 8   |     NONE      |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |  Size  |      jp2       | jp13  |  jp16  |  jp18  |  jp20  |
          |--------+----------------+-------+--------+--------+--------|
          |  32KB  | 1 & 8, 2 & 7,  | 1 & 4 | 1 & 4  |  Open  |  Open  |
          |        |  3 & 6, 4 & 5  |       |        |        |        |
          |--------+----------------+-------+--------+--------+--------|
          |  64KB  | 1 & 8, 2 & 7,  | 2 & 3 | 1 & 4  | 1 & 4  |  Open  |
          |        |     4 & 5      |       |        |        |        |
          |--------+----------------+-------+--------+--------+--------|
          | 128KB  | 1 & 8, 2 & 7,  | 1 & 4 | 1 & 4  | 1 & 4, | 1 & 8, |
          |        |     3 & 6      |       |        | 2 & 3  | 2 & 7  |
          |--------+----------------+-------+--------+--------+--------|
          | 256KB  |  1 & 8, 2 & 7  | 2 & 3 | 1 & 4, | 1 & 4, | 3 & 6, |
          |        |                |       | 2 & 3  | 2 & 3  | 4 & 5  |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |         Type          |                JP10                |
          |-----------------------+------------------------------------|
          |        80486SX        |         pins 3 & 10 closed         |
          |-----------------------+------------------------------------|
          |        80487SX        | pins 1 & 12, 2 & 11, 5 & 8 closed  |
          |-----------------------+------------------------------------|
          |        80486DX        | pins 1 & 12, 2 & 11, 3 & 10 closed |
          |-----------------------+------------------------------------|
          |       80486DX2        | pins 1 & 12, 2 & 11, 3 & 10 closed |
          +------------------------------------------------------------+