(TXT) View Source
       
       # DATAEXPERT CORPORATION
       
          OPTI-495XLC 3/486WB CACHE
       
          Processor    80386DX/80486SX/80486DX/80486DX2/Pentium          
                       Overdrive                                         
          Processor    25/33/40/50(internal)/50/66(internal)/MHz         
          Speed        
          Chip Set     OPTi                                              
          Max. Onboard 64MB                                              
          DRAM         
          Cache        64/128/256KB                                      
          BIOS         AMI                                               
          Dimensions   230mm x 218mm                                     
          I/O Options  32-bit VESA local bus slots (2)                   
          NPU Options  80387DX                                           
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose       | Location | Purpose              | Location |
          |---------------+----------+----------------------+----------|
          | Power LED &   |    J1    | Turbo LED            |    J5    |
          | keylock       |          |                      |          |
          |---------------+----------+----------------------+----------|
          | Speaker       |    J2    | External battery     |    J6    |
          |---------------+----------+----------------------+----------|
          | Turbo switch  |    J3    | 32-bit VESA Local    |    S1    |
          |               |          | bus slot             |          |
          |---------------+----------+----------------------+----------|
          | Reset switch  |    J4    | 32-bit VESA Local    |    S2    |
          |               |          | bus slot             |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CMOS memory normal operation     |   J6   | pins 2 & 3 |
          |   | (Internal battery)               |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |   J6   | pins 3 & 4 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |  JP21  |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  JP21  |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JP23  |    N/A     |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Battery type select - NI-CD      |  JP26  | pins 2 & 3 |
          |   | recharge                         |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | Battery type select - Lithum     |  JP26  | pins 1 & 2 |
          |   | discharge                        |        |   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        |
          |------------------+--------------------+--------------------|
          |       17MB       |    (4) 256K x 9    |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
          |------------------+--------------------+--------------------|
          |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
          |------------------+--------------------+--------------------|
          |       64MB       |    (4) 16M x 9     |        NONE        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    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  |      JP10       |      JP11      |  JP16  |  JP17  |
          |-------+-----------------+----------------+--------+--------|
          | 64KB  |   pins 2 & 3    |   pins 2 & 3   |  Open  |  Open  |
          |       |     closed      |     closed     |        |        |
          |-------+-----------------+----------------+--------+--------|
          | 128KB |   pins 1 & 2    |   pins 1 & 2   | Closed |  Open  |
          |       |     closed      |     closed     |        |        |
          |-------+-----------------+----------------+--------+--------|
          | 256KB |   pins 2 & 3    |   pins 2 & 3   | Closed | Closed |
          |       |     closed      |     closed     |        |        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 80386/80486 CONFIGURATION                  |
          |------------------------------------------------------------|
          | Type  |  JP14  |  JP15  |    JP20    |   JP25   |   JP30   |
          |-------+--------+--------+------------+----------+----------|
          | 80386 |  Open  |  Open  | pins 2 & 3 | pins 1 & | pins 2 & |
          |       |        |        |            |    2     |    3     |
          |-------+--------+--------+------------+----------+----------|
          | 80486 | Closed | Closed | pins 1 & 2 | pins 2 & | pins 1 & |
          |       |        |        |            |    3     |    2     |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |      Type       |      JP2       |  JP18  |      JP19      |
          |-----------------+----------------+--------+----------------|
          |  80486SX (PGA)  |      Open      |  Open  |   pins 2 & 3   |
          |                 |                |        |     closed     |
          |-----------------+----------------+--------+----------------|
          | 80486SX (PQFP)  |      Open      | Closed |   pins 2 & 3   |
          |                 |                |        |     closed     |
          |-----------------+----------------+--------+----------------|
          |     80486DX     |   pins 1 & 2   | Closed |   pins 1 & 2   |
          |                 |     closed     |        |     closed     |
          |-----------------+----------------+--------+----------------|
          |    80486DX2     |   pins 1 & 2   | Closed |   pins 1 & 2   |
          |                 |     closed     |        |     closed     |
          |-----------------+----------------+--------+----------------|
          |     Pentium     |   pins 2 & 3   | Closed |   pins 1 & 2   |
          |    Overdrive    |     closed     |        |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |      Speed      | JP6  |  JP7   |  JP8   |  JP9   |  JP22  |
          |-----------------+------+--------+--------+--------+--------|
          |  80386DX/33MHz  | Open |  Open  | Closed | pins 1 |  Open  |
          |                 |      |        |        |  & 2   |        |
          |-----------------+------+--------+--------+--------+--------|
          |  80486SX/25MHz  | Open |  Open  |  Open  | pins 1 | Closed |
          |                 |      |        |        |  & 2   |        |
          |-----------------+------+--------+--------+--------+--------|
          |  80486SX/33MHz  | Open |  Open  | Closed | pins 1 |  Open  |
          |                 |      |        |        |  & 2   |        |
          |-----------------+------+--------+--------+--------+--------|
          |  80486DX/25MHz  | Open |  Open  |  Open  | pins 1 | Closed |
          |                 |      |        |        |  & 2   |        |
          |-----------------+------+--------+--------+--------+--------|
          |  80486DX/40MHz  | Open | Closed | Closed | pins 1 |  Open  |
          |                 |      |        |        |  & 2   |        |
          |-----------------+------+--------+--------+--------+--------|
          | 80486DX/50i MHz | Open |  Open  |  Open  | pins 1 | Closed |
          |                 |      |        |        |  & 2   |        |
          |-----------------+------+--------+--------+--------+--------|
          |  80486DX/50MHz  | Open | Closed |  Open  | pins 1 |  Open  |
          |                 |      |        |        |  & 2   |        |
          |-----------------+------+--------+--------+--------+--------|
          | 80486DX/66i MHz | Open |  Open  | Closed | pins 1 |  Open  |
          |                 |      |        |        |  & 2   |        |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+