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       # EVEREX SYSTEMS, INC.
       
          STEP MP EV-2607
       
          Processor    80386DX/80486DX (Depending on which CPU card is   
                       used)                                             
          Processor    25/33MHz                                          
          Speed        
          Chip Set     C & T                                             
          Max. Onboard 64MB                                              
          DRAM         
          SRAM Cache   64/256KB                                          
          BIOS         Quadtel                                           
          Dimensions   330mm x 220mm                                     
          I/O Options  Base card slots (3), CPU Card slot, external      
                       memory card, SCSI card slots (2)                  
          NPU Options  80387DX (Depending on which CPU card is used)     
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | LED display       |   CN1    | Speaker          |   J22    |
          |-------------------+----------+------------------+----------|
          | Chassis fan power |   J15    | Power good LEDs  |   LEDs   |
          |-------------------+----------+------------------+----------|
          | SCSI B connector  |   J16    | 16-bit external  |    S1    |
          |                   |          | memory card      |          |
          |-------------------+----------+------------------+----------|
          | SCSI A connector  |   J17    | SCSI board slots | S2 & S3  |
          |-------------------+----------+------------------+----------|
          | Chassis fan power |   J21    | Base card slots  | S4, S5,  |
          |                   |          |                  |   & S6   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function              |  Jumper  |  Position  |
          |------------------------------------+----------+------------|
          | » | I/O bus select ISA card set    |    J1    |   closed   |
          |---+--------------------------------+----------+------------|
          |   | I/O bus select EISA card set   |    J1    |    open    |
          +------------------------------------------------------------+
       
 (IMG) IMG 2
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | Memory activity     |   CN1    | ECC fault      |   LED1   |
          | indicator           |          | indicator LED  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
          |--------+------------+------------+------------+------------|
          |  16MB  | (4) 4M x 9 |    NONE    |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          |  32MB  | (4) 4M x 9 | (4) 4M x 9 |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          |  48MB  | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |    NONE    |
          |--------+------------+------------+------------+------------|
          |  64MB  | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
          +------------------------------------------------------------+
       
 (IMG) IMG 3
          
       
          +------------------------------------------------------------+
          |                            NOTE                            |
          |------------------------------------------------------------|
          | Note:This card must be place in either slot 5 or 6 on the  |
          | system board only.                                         |
          |                                                            |
          | If installing the card in slot 5 then resistors RP4, RP8,  |
          | & RP12 must be removed.                                    |
          |                                                            |
          | If installing the card in slot 6 then                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | CPU activity        |   CN1    | CPU activity   |   LED1   |
          | indicator connector |          | indicator LED  |          |
          |---------------------+----------+----------------+----------|
          | SCSI connector      |   CN2    |                |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |             Cache             |
          |----------------------------+-------------------------------|
          |            64KB            |          (8) 8K x 8           |
          +------------------------------------------------------------+
       
 (IMG) IMG 4
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | CPU activity      |   CN1    | RS422 Serial I/O |    J3    |
          | indicator         |          | connector        |          |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | RS422 Serial I/O  |    J1    | RS422 Serial I/O |    J4    |
          | connector         |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | RS422 Serial I/O  |    J2    | CPU activity     |   LED1   |
          | connector         |          | indicator LED    |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |             Cache             |
          |----------------------------+-------------------------------|
          |           256KB            |         (8) 256K x 1          |
          +------------------------------------------------------------+
       
 (IMG) IMG 5
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | CPU activity        |   CN1    | CPU activity   |   LED1   |
          | indicator connector |          | indicator LED  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |             Cache             |
          |----------------------------+-------------------------------|
          |           256KB            |         (8) 256K x 1          |
          +------------------------------------------------------------+
       
 (IMG) IMG 6
          
       
          +------------------------------------------------------------+
          |                MEMORY ADDRESS CONFIGURATION                |
          |------------------------------------------------------------|
          | Function | SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |
          |----------+-------+------+------+------+------+------+------|
          | Disable  |  On   | Off  | Off  | Off  | Off  | Off  | Off  |
          |  8th MB  |       |      |      |      |      |      |      |
          |----------+-------+------+------+------+------+------+------|
          | Disable  |  Off  |  On  | Off  | Off  | Off  | Off  | Off  |
          |  9th MB  |       |      |      |      |      |      |      |
          |----------+-------+------+------+------+------+------+------|
          | Disable  |  Off  | Off  |  On  | Off  | Off  | Off  | Off  |
          | 10th MB  |       |      |      |      |      |      |      |
          |----------+-------+------+------+------+------+------+------|
          | Disable  |  Off  | Off  | Off  |  On  | Off  | Off  | Off  |
          | 11th MB  |       |      |      |      |      |      |      |
          |----------+-------+------+------+------+------+------+------|
          | Disable  |  Off  | Off  | Off  | Off  |  On  | Off  | Off  |
          | 12th MB  |       |      |      |      |      |      |      |
          |----------+-------+------+------+------+------+------+------|
          | Disable  |  Off  | Off  | Off  | Off  | Off  |  On  | Off  |
          | 13th MB  |       |      |      |      |      |      |      |
          |----------+-------+------+------+------+------+------+------|
          | Disable  |  Off  | Off  | Off  | Off  | Off  | Off  |  On  |
          | 14th MB  |       |      |      |      |      |      |      |
          |------------------------------------------------------------|
          |Note:Turning on one or more of the above switches will open |
          |a window of addressed space for   configuration of memory   |
          |mappd devices like network controllers and multiport cards. |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose             | Location | Purpose        | Location |
          |---------------------+----------+----------------+----------|
          | CPU activity        |   CN1    | CPU activity   |   LED1   |
          | indicator connector |          | indicator LED  |          |
          |---------------------+----------+----------------+----------|
          | Base CPU Ribbon     |   CN2    |                |          |
          | connector           |          |                |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |             Cache             |
          |----------------------------+-------------------------------|
          |           256KB            |         (8) 256K x 1          |
          +------------------------------------------------------------+
       
 (IMG) IMG 7
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose            | Location | Purpose         | Location |
          |--------------------+----------+-----------------+----------|
          | Parallel port      |   CN1    | SCSI connector  |   CN4    |
          |--------------------+----------+-----------------+----------|
          | Serial port        |   CN2    | Reset button    |   CN5    |
          |--------------------+----------+-----------------+----------|
          | Paddle port        |   CN3    | Floppy drive    |   CN6    |
          | connector          |          | interface       |          |
          | (optional)         |          |                 |          |
          +------------------------------------------------------------+
       
 (IMG) IMG 8
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose              | Location | Purpose       | Location |
          |----------------------+----------+---------------+----------|
          | Serial port          |   CN1    | Floppy drive  |   CN3    |
          |                      |          | interface     |          |
          |----------------------+----------+---------------+----------|
          | Base CPU ribbon      |   CN2    | Reset switch  |   CN4    |
          | connector            |          |               |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |                Function                | Jumper | Position |
          |----------------------------------------+--------+----------|
          | » | Montior type select color          |   J1   |   Open   |
          |---+------------------------------------+--------+----------|
          |   | Monitor type select monochrome     |   J1   |  Closed  |
          |---+------------------------------------+--------+----------|
          | » | Floppy drive interface enabled     |   J2   |   Open   |
          |---+------------------------------------+--------+----------|
          |   | Floppy drive interface disabled    |   J2   |  Closed  |
          |---+------------------------------------+--------+----------|
          | » | Serial port select COM1            |   J3   |   Open   |
          |---+------------------------------------+--------+----------|
          |   | Serial port select COM2            |   J3   |  Closed  |
          |---+------------------------------------+--------+----------|
          | » | Factory configured - do not alter  |   J4   |   Open   |
          +------------------------------------------------------------+