GENOA SYSTEMS CORPORATION
=========================

   UL486

   Processor          80486SX/80486DX/80486DX2                    
   Processor Speed    16/20/25/33/50(internal)/50/66(internal)MHz 
   Chip Set           UMC                                         
   Max. Onboard DRAM  32MB                                        
   Cache              64/128/256KB                                
   BIOS               AMI                                         
   Dimensions         330mm x 218mm                               
   I/O Options        32-bit external memory card                 
   NPU Options        None                                        

<gopher://bitreich.org/I/th99/m/E-H/30246-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose           | Location |
   |------------------+----------+-------------------+----------|
   | External battery |    J1    | Speaker           |    J5    |
   |------------------+----------+-------------------+----------|
   | Turbo LED        |    J2    | Power LED &       |    J6    |
   |                  |          | keylock           |          |
   |------------------+----------+-------------------+----------|
   | Turbo switch     |    J3    | 32-bit external   |    S1    |
   |                  |          | memory card       |          |
   |------------------+----------+-------------------+----------|
   | Reset switch     |    J4    |                   |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Jumper |   Position   |
   |------------------------------------+--------+--------------|
   |>> | Monitor type select color      |  JP1   |  pins 2 & 3  |
   |   |                                |        |    closed    |
   |---+--------------------------------+--------+--------------|
   |   | Monitor type select monochrome |  JP1   |  pins 1 & 2  |
   |   |                                |        |    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) 1 M x 9      |
   |-----------+------------------------+-----------------------|
   |    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       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    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 | JP6  | JP7  | JP8  | JP9  | JP10 |JP11 | JP12 |JP13 |
   |------+------+------+------+------+------+-----+------+-----|
   | 64MB |1 & 2 |1 & 2 | Open | Open | Open |Open | Open |1 & 2|
   |------+------+------+------+------+------+-----+------+-----|
   |128MB |2 & 3 |1 & 2 |Closed|Closed| Open |Open |1 & 2 |2 & 3|
   |------+------+------+------+------+------+-----+------+-----|
   |256MB |2 & 3 |2 & 3 |Closed|Closed|Closed| JP8 |2 & 3 |1 & 2|
   |------------------------------------------------------------|
   |Note: Pins designated should be in the closed position.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |        Type        |        JP17        |       JP18       |
   |--------------------+--------------------+------------------|
   |      80486SX       | pins 2 & 3 closed  |       Open       |
   |--------------------+--------------------+------------------|
   |      80486DX       | pins 1 & 2 closed  |      Closed      |
   |--------------------+--------------------+------------------|
   |      80486DX2      | pins 1 & 2 closed  |      Closed      |
   +------------------------------------------------------------+