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       # YOUNG MICRO SYSTEMS, INC.
       
          VEGA MERCURY PENTIUM PCI
       
          Processor         Pentium                                      
          Processor Speed   60/66MHz                                     
          Chip Set          Intel                                        
          Max. Onboard DRAM 192MB                                        
          Cache             256/512KB                                    
          BIOS              AMI                                          
          Dimensions        330mm x 218mm                                
          I/O Options       32-bit PCI bus slots (3), PS/2 mouse port    
          NPU Options       None                                         
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose            | Location | Purpose         | Location |
          |--------------------+----------+-----------------+----------|
          | Speaker            |    J1    | Power LED &     |    J8    |
          |                    |          | keylock         |          |
          |--------------------+----------+-----------------+----------|
          | Reset switch       |    J3    | 32-bit PCI bus  |   SL1,   |
          |                    |          |                 | SL2, SL3 |
          |--------------------+----------+-----------------+----------|
          | PS/2 mouse         |    J4    |                 |          |
          | connector          |          |                 |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CMOS memory normal operation     |   J2   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |   J2   |   Closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |   J5   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |   J6   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |   J7   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Flash BIOS write protect enabled |  J10   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Flash BIOS write protect         |  J10   | pins 2 & 3 |
          |   | disabled                         |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Flash BIOS programming normal    |  J11   |    Open    |
          |   | mode                             |        |            |
          |---+----------------------------------+--------+------------|
          |   | Flash BIOS programming flash     |  J11   |   Closed   |
          |   | EPROM                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J45   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J46   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J47   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J48   |   Closed   |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J49   |   Closed   |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J72   | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JQ5   | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JQ9   | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JQ11  | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | PCI IRQ trigger type select      |  JQ14  | pins 1 & 2 |
          |   | inverted                         |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | PCI IRQ trigger type select      |  JQ14  | pins 2 & 3 |
          |   | standard                         |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JQ15  | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    1MB     | (2) 256K x 36 |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    4MB     | (2) 256K x 36 | (2) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    8MB     | (2) 256K x 36 | (2) 256K x 36 | (2) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (2) 2M x 36  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (2) 1M x 36  |  (2) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (2) 4M x 36  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (2) 2M x 36  |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (2) 8M x 36  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (2) 4M x 36  |  (2) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |   128MB    |  (2) 8M x 36  |  (2) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |   192MB    |  (2) 8M x 36  |  (2) 8M x 36  |  (2) 8M x 36  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |            Size            |            Bank 0             |
          |----------------------------+-------------------------------|
          |           256KB            |          (8) 32K x 8          |
          |----------------------------+-------------------------------|
          |           512KB            |          (8) 64K x 8          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |            Size            |              J71              |
          |----------------------------+-------------------------------|
          |           256KB            |       pins 1 & 2 closed       |
          |----------------------------+-------------------------------|
          |           512KB            |       pins 2 & 3 closed       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI INTERRUPT CONFIGURATION                 |
          |------------------------------------------------------------|
          | Interrupt  |   J73/A   |   J73/B   |   J73/C   |   J73/D   |
          |------------+-----------+-----------+-----------+-----------|
          |   INT A    |  Closed   |   Open    |   Open    |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |   INT B    |   Open    |  Closed   |   Open    |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |   INT C    |   Open    |   Open    |  Closed   |   Open    |
          |------------+-----------+-----------+-----------+-----------|
          |   INT D    |   Open    |   Open    |   Open    |  Closed   |
          +------------------------------------------------------------+