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       # TMC RESEARCH CORPORATION
       
          PCI58PV (VER. 2.0)
       
          Processor            80486SX/80487SX/80486DX/ODP486SX/80486DX2 
          Processor Speed      20/25/33/50(internal)/50/66(internal)MHz  
          Chip Set             SIS                                       
          Max. Onboard DRAM    32MB                                      
          SRAM Cache           64/128/256KB                              
          BIOS                 AMI                                       
          Dimensions           254mm x 2184mm                            
          I/O Options          None                                      
          NPU Options          None                                      
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose       |  Location  | Purpose         |  Location   |
          |---------------+------------+-----------------+-------------|
          | Speaker       |  J1/pins   | IDE interface   | J1/pins 10  |
          |               |    1-4     | LED (output)    |    & 20     |
          |---------------+------------+-----------------+-------------|
          | Turbo switch  | J1 pins 7  | Power LED &     | J1/pins 11  |
          |               |    & 17    | keylock         |    - 15     |
          |---------------+------------+-----------------+-------------|
          | Turbo LED     | J1/pins 8  | IDE interface   |     J2      |
          |               |    & 18    | LED (input)     |             |
          |---------------+------------+-----------------+-------------|
          | Reset switch  | J1/pins 9  | External        |     J6      |
          |               |    & 19    | battery         |             |
          |------------------------------------------------------------|
          | Note: Connect the chassis HD LED to J1/pins 10 & 20 then   |
          | connect the hard drive LED jumper on the drive controller  |
          | to J2.                                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              | Jumper  |  Position   |
          |------------------------------------+---------+-------------|
          | »   | CMOS memory normal operation |  JP10   | pins 1 & 2  |
          |     | (internal battery)           |         |   closed    |
          |-----+------------------------------+---------+-------------|
          |     | CMOS memory normal operation |  JP10   |    open     |
          |     | (external battery)           |         |             |
          |-----+------------------------------+---------+-------------|
          |     | CMOS memory clear            |  JP10   | pins 2 & 3  |
          |     |                              |         |   closed    |
          |-----+------------------------------+---------+-------------|
          |     | CPU speed select < 50MHz     |  JP11   | pins 1 & 2  |
          |     |                              |         |   closed    |
          |-----+------------------------------+---------+-------------|
          |     | CPU speed select 50MHz       |  JP11   | pins 2 & 3  |
          |     |                              |         |   closed    |
          |-----+------------------------------+---------+-------------|
          | »   | Factory configured - do not  |  JP12   |    open     |
          |     | alter                        |         |             |
          |-----+------------------------------+---------+-------------|
          | »   | Monitor type select color    |  JP13   |   closed    |
          |-----+------------------------------+---------+-------------|
          |     | Monitor type select          |  JP13   |    open     |
          |     | monochrome                   |         |             |
          |-----+------------------------------+---------+-------------|
          | »   | Factory configured - do not  |  JP17   | pins 1 & 2  |
          |     | alter                        |         |   closed    |
          |------------------------------------------------------------|
          | Note: CPU speed select refers to the external speed of the |
          | CPU. (i.e. A DX2/66 would be < 50                          |
          |                                                            |
          | because the external speed is 33MHz.)                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     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         |
          |----------------+---------------------+---------------------|
          |      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      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |     Cache     |   Location    |   TAG (U39)   |
          |------------+---------------+---------------+---------------|
          |    64KB    |  (8) 8K x 8   |  Banks 0 & 1  |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |    Bank 0     |  (1) 8K x 8   |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (8) 32K x 8  |  Banks 0 & 1  |  (1) 32K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            SRAM RESISTOR NETWORK CONFIGURATION             |
          |------------------------------------------------------------|
          |     Size     |     RN64      |     RN128     |    RN256    |
          |--------------+---------------+---------------+-------------|
          |     64KB     |    closed     |     open      |    open     |
          |--------------+---------------+---------------+-------------|
          |    128KB     |     open      |    closed     |    open     |
          |--------------+---------------+---------------+-------------|
          |    256KB     |     open      |     open      |   closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU JUMPER CONFIGURATION                  |
          |------------------------------------------------------------|
          |      CPU      |     RNA      |     RNB      |     RNC      |
          |---------------+--------------+--------------+--------------|
          |    80486SX    |     open     |     open     |    closed    |
          |---------------+--------------+--------------+--------------|
          |    80487SX    |     open     |     open     |    closed    |
          |---------------+--------------+--------------+--------------|
          |    80486DX    |    closed    |     open     |     open     |
          |---------------+--------------+--------------+--------------|
          |   ODP486SX    |     open     |    closed    |     open     |
          |---------------+--------------+--------------+--------------|
          |   80486DX2    |    closed    |     open     |     open     |
          +------------------------------------------------------------+