NOVACOR, INC.
=============

   OPTIMUM 386SX-16/20/25 REV. A

   Processor             80386SX                                  
   Processor Speed       16/20/25MHz                              
   Chip Set              OPTI                                     
   Max. Onboard DRAM     16MB                                     
   Cache                 16/64KB                                  
   BIOS                  AMI/MR                                   
   Dimensions            330mm x 218mm                            
   I/O Options           None                                     
   NPU Options           80387SX                                  

<gopher://bitreich.org/I/th99/m/M-O/30298-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | External battery    |    J1    | Turbo LED      |   JP7    |
   |---------------------+----------+----------------+----------|
   | Speaker             |   J21    | Reset switch   |    S1    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |   J22    | Turbo switch   |    S3    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP1   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP1   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color (AMI   |  JP2   |   Closed   |
   |   | BIOS)                            |        |            |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP2   |    Open    |
   |   | (AMI BIOS)                       |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Password enabled (MR BIOS)       |  JP2   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Password disabled (MR BIOS)      |  JP2   |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 1MB  | (2) 256K x  | (2) 256K x  |    NONE    |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (2) 256K x  | (2) 256K x  | (2) 256K x | (2) 256K x |
   |      |      9      |      9      |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (2) 1M x 9  |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 3MB  | (2) 256K x  | (2) 256K x  | (2) 1M x 9 |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (2) 1M x 9  | (2) 1M x 9  |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 5MB  | (2) 256K x  | (2) 256K x  | (2) 1M x 9 | (2) 1M x 9 |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 6MB  | (2) 1M x 9  | (2) 1M x 9  | (2) 1M x 9 |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (2) 1M x 9  | (2) 1M x 9  | (2) 1M x 9 | (2) 1M x 9 |
   |------+-------------+-------------+------------+------------|
   | 9MB  | (2) 256K x  | (2) 256K x  | (2) 4M x 9 |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 10MB | (2) 1M x 9  | (2) 4M x 9  |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 12MB | (2) 1M x 9  | (2) 1M x 9  | (2) 4M x 9 |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 16MB | (2) 4M x 9  | (2) 4M x 9  |    NONE    |    NONE    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |        TAG         |
   |------------------+--------------------+--------------------|
   |       16KB       |     (2) 8K x 8     |     (2) 4K x 4     |
   |------------------+--------------------+--------------------|
   |       64KB       |    (2) 32K x 8     |     (2) 4K x 4     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   | Size |       JP3        |    JP4     |    JP5     |  JP6   |
   |------+------------------+------------+------------+--------|
   | 16KB |    pins 1 & 2    | pins 1 & 2 | pins 1 & 2 |  Open  |
   |      |      closed      |   closed   |   closed   |        |
   |------+------------------+------------+------------+--------|
   | 64KB |    pins 2 & 3    | pins 2 & 3 | pins 2 & 3 | Closed |
   |      |      closed      |   closed   |   closed   |        |
   +------------------------------------------------------------+