(TXT) View Source
       
       # IPC CORPORATION, LTD.
       
          IPC VALUEMAGIC SERIES DESKTOP
       
          MB486HE#21
       
          Processor    80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium 
                       Overdrive                                         
          Processor    25/33/50(internal)/66(internal)MHz                
          Speed        
          Chip Set     UMC                                               
          Max. Onboard 32MB                                              
          DRAM         
          Cache        64/128/256KB                                      
          BIOS         AMI                                               
          Dimensions   330mm x 218mm                                     
          I/O Options  None                                              
          NPU Options  None                                              
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose        | Location | Purpose             | Location |
          |----------------+----------+---------------------+----------|
          | Turbo switch   |    J1    | Reset switch        |    J4    |
          |----------------+----------+---------------------+----------|
          | Turbo LED      |    J2    | Power LED & keylock |    J5    |
          |----------------+----------+---------------------+----------|
          | Speaker        |    J3    | External battery    |    J6    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Function                | Jumper | Position |
          |----------------------------------------+--------+----------|
          | » | High speed write wait state select |  W22   |  Closed  |
          |   | 1 wait state                       |        |          |
          |---+------------------------------------+--------+----------|
          |   | High speed write wait state select |  W22   |   Open   |
          |   | 0 wait states                      |        |          |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  |  W23   |   Open   |
          |---+------------------------------------+--------+----------|
          | » | CPU clock select 1x                |  W24   |   Open   |
          |---+------------------------------------+--------+----------|
          |   | CPU clock select 2x                |  W24   |  Closed  |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  |  W25   |   Open   |
          |---+------------------------------------+--------+----------|
          | » | Monitor type select color          |  W26   |  Closed  |
          |---+------------------------------------+--------+----------|
          |   | Monitor type select monochrome     |  W26   |   Open   |
          |---+------------------------------------+--------+----------|
          | » | CMOS memory normal operation       |  W27   |  Closed  |
          |---+------------------------------------+--------+----------|
          |   | CMOS memory clear                  |  W27   |   Open   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |       Bank 0       |       Bank 1       |
          |------------------+--------------------+--------------------|
          |       4MB        |     (4) 1M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       16MB       |     (4) 4M x 9     |        NONE        |
          |------------------+--------------------+--------------------|
          |       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 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  |   W1   |   W2   |  W3  |  W4  | W5  |  W6   |  W7  |
          |-------+--------+--------+------+------+-----+-------+------|
          | 64KB  | Closed | Closed | 1 &  | 1 &  | 1 & | Open  | Open |
          |       |        |        |  2   |  2   |  2  |       |      |
          |-------+--------+--------+------+------+-----+-------+------|
          | 128KB | Closed | Closed | 2 &  | 1 &  | 2 & | 1 & 2 | Open |
          |       |        |        |  3   |  2   |  3  |       |      |
          |-------+--------+--------+------+------+-----+-------+------|
          | 256KB | Closed | Closed | 2 &  | 2 &  | 1 & | 2 & 3 | Open |
          |       |        |        |  3   |  3   |  2  |       |      |
          |------------------------------------------------------------|
          |      Note: Pins designated should be in the closed         |
          |      position..                                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             CACHE JUMPER CONFIGURATION (CON’T)             |
          |------------------------------------------------------------|
          | Size |  W13  |  W14  | W15 | W16 | W17 | W18 | W19  | W20  |
          |------+-------+-------+-----+-----+-----+-----+------+------|
          | 64KB | Open  | Open  |Open |Open |Open |Open | Open | Open |
          |------+-------+-------+-----+-----+-----+-----+------+------|
          |128KB |Closed | Open  |Open |Open |Open |Open | Open |Closed|
          |------+-------+-------+-----+-----+-----+-----+------+------|
          |256KB |Closed |Closed |Open |Open |Open |Open |Closed|Closed|
          |------------------------------------------------------------|
          |     Note: The location of the above jumpers are            |
          |     unidentified.                                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |    Type     |   W8   |   W9    |   W10   |  W11   |  W12   |
          |-------------+--------+---------+---------+--------+--------|
          |   80486SX   | 1 & 2  |  Open   |  Open   | 1 & 2  |  Open  |
          |   (PQFP)    |        |         |         |        |        |
          |-------------+--------+---------+---------+--------+--------|
          |   80486SX   |  Open  |  Open   |  2 & 3  |  Open  | 2 & 3  |
          |    (PGA)    |        |         |         |        |        |
          |-------------+--------+---------+---------+--------+--------|
          |  ODP486SX   | 1 & 2  |  Open   | 1 & 2,  |  Open  | 1 & 2  |
          |             |        |         |  3 & 4  |        |        |
          |-------------+--------+---------+---------+--------+--------|
          |   80487SX   | 1 & 2  |  Open   | 1 & 2,  |  Open  | 1 & 2  |
          |             |        |         |  3 & 4  |        |        |
          |-------------+--------+---------+---------+--------+--------|
          |   80486DX   | 2 & 3  | Closed  | Closed  | 1 & 2  |  Open  |
          |   (PQFP)    |        |         |         |        |        |
          |-------------+--------+---------+---------+--------+--------|
          |   80486DX   | 2 & 3  |  Open   | 1 & 2,  |  Open  | 2 & 3  |
          |    (PGA)    |        |         |  3 & 4  |        |        |
          |-------------+--------+---------+---------+--------+--------|
          |  80486DX2   | 2 & 3  |  Open   | 1 & 2,  |  Open  | 2 & 3  |
          |             |        |         |  3 & 4  |        |        |
          |-------------+--------+---------+---------+--------+--------|
          |   Pentium   | 1 & 2  |  Open   | 1 & 2,  |  Open  | 1 & 2  |
          |  Overdrive  |        |         |  3 & 4  |        |        |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          | The locations of W8 & W9 are unidentified.                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |            Speed             |             W21             |
          |------------------------------+-----------------------------|
          |            25MHz             |            Open             |
          |------------------------------+-----------------------------|
          |            33MHz             |            Open             |
          |------------------------------+-----------------------------|
          |            50iMHz            |           Closed            |
          |------------------------------+-----------------------------|
          |            66iMHz            |           Closed            |
          +------------------------------------------------------------+