ZEOS INTERNATIONAL, LTD.
========================

   386SX-20

   Processor    80386SX                                           
   Processor    20MHz                                             
   Speed        
   Chip Set     Unidentified                                      
   Max. Onboard 16MB                                              
   DRAM         
   Cache        None                                              
   BIOS         Award                                             
   Dimensions   330mm x 218mm                                     
   I/O Options  serial ports (2), parallel port, floppy drive     
                interface, IDE interface, game port               
   NPU Options  80387SX                                           

<gopher://bitreich.org/I/th99/m/U-Z/32410-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose              | Location | Purpose       | Location |
   |----------------------+----------+---------------+----------|
   | External battery     |    J1    | Turbo switch  |   J10    |
   |----------------------+----------+---------------+----------|
   | Game port            |    J3    | Reset switch  |   J11    |
   |----------------------+----------+---------------+----------|
   | Parallel port        |    J5    | Turbo LED     |   J12    |
   |----------------------+----------+---------------+----------|
   | Serial port 2        |    J6    | Power LED &   |   J13    |
   |                      |          | keylock       |          |
   |----------------------+----------+---------------+----------|
   | Serial port 1        |    J7    | Speaker       |   J14    |
   |----------------------+----------+---------------+----------|
   | Floppy drive         |    J8    | IDE interface |   J15    |
   | interface            |          | LED           |          |
   |----------------------+----------+---------------+----------|
   | IDE interface        |    J9    |               |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Monitor type select CGA          |   J4   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select Mono/EGA/VGA |   J4   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Game port enabled                |   P1   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Game port disabled               |   P1   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Parallel port interupt select    |  PIRQ  | pins 1 & 2 |
   |   | IRQ7                             |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Parallel port interupt select    |  PIRQ  | pins 2 & 3 |
   |   | IRQ5                             |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Parallel port interupt disabled  |  PIRQ  |  all open  |
   |---+----------------------------------+--------+------------|
   |>> | Serial port 1 (COM1) interupt    | SIRQ1  | pins 2 & 3 |
   |   | select IRQ4                      |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Serial port 1 (COM1) interupt    | SIRQ1  | pins 1 & 2 |
   |   | select IRQ3                      |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Serial port 1 (COM1) interupt    | SIRQ1  |  all open  |
   |   | disabled                         |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Serial port 2 (COM2) interupt    | SIRQ2  | pins 1 & 2 |
   |   | select IRQ3                      |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Serial port 2 (COM2) interupt    | SIRQ2  | pins 2 & 3 |
   |   | select IRQ4                      |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Serial port 2 (COM2) interupt    | SIRQ2  |  all open  |
   |   | disabled                         |        |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
   |-------+-------------+------------+------------+------------|
   | 512KB | (2) 256K x  |    NONE    |    NONE    |    NONE    |
   |       |      9      |            |            |            |
   |-------+-------------+------------+------------+------------|
   |  1MB  | (2) 256K x  | (2) 256K x |    NONE    |    NONE    |
   |       |      9      |     9      |            |            |
   |-------+-------------+------------+------------+------------|
   | 1.5MB | (2) 256K x  | (2) 256K x | (2) 256K x |    NONE    |
   |       |      9      |     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) 1M x 9  | (2) 256K x | (2) 256K x |    NONE    |
   |       |             |     9      |     9      |            |
   |-------+-------------+------------+------------+------------|
   |  4MB  | (2) 1M x 9  | (2) 1M x 9 |    NONE    |    NONE    |
   |-------+-------------+------------+------------+------------|
   |  5MB  | (2) 1M x 9  | (2) 1M x 9 | (2) 256K x | (2) 256K x |
   |       |             |            |     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 |
   |-------+-------------+------------+------------+------------|
   |  8MB  | (2) 4M x 9  |    NONE    |    NONE    |    NONE    |
   |-------+-------------+------------+------------+------------|
   |  9MB  | (2) 4M x 9  | (2) 256K x | (2) 256K x |    NONE    |
   |       |             |     9      |     9      |            |
   |-------+-------------+------------+------------+------------|
   | 10MB  | (2) 4M x 9  | (2) 1M x 9 |    NONE    |    NONE    |
   |-------+-------------+------------+------------+------------|
   | 11MB  | (2) 4M x 9  | (2) 1M x 9 | (2) 256K x | (2) 256K x |
   |       |             |            |     9      |     9      |
   |-------+-------------+------------+------------+------------|
   | 12MB  | (2) 4M x 9  | (2) 1M x 9 | (2) 1M x 9 |    NONE    |
   |-------+-------------+------------+------------+------------|
   | 14MB  | (2) 4M x 9  | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
   |-------+-------------+------------+------------+------------|
   | 16MB  | (2) 4M x 9  | (2) 4M x 9 |    NONE    |    NONE    |
   +------------------------------------------------------------+