CACHE COMPUTERS, INC.
=====================

   386SX-20/25 PLUS (Model 320)

                                                                  
   Processor        80386SX                                       
   Processor Speed  20/25MHz                                      
   Chip Set         OPTI                                          
   Max. Onboard     16MB                                          
   DRAM             
   Cache            64KB                                          
   BIOS             AMI/Cache/Phoenix                             
   Dimensions       330mm x 218mm                                 
   I/O Options      Parallel port, serial ports (2), game port,   
                    floppy drive interface, IDE interface         
   NPU Options      80387SX                                       

<gopher://bitreich.org/I/th99/m/C-D/30019-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Auxiliary         |    J2    | COM2 at 2F8-2FFh |    P2    |
   | keyboard          |          |                  |          |
   |-------------------+----------+------------------+----------|
   | External battery  |   JP1    | Game port at     |    P3    |
   |                   |          | 201h             |          |
   |-------------------+----------+------------------+----------|
   | IDE LED           |   JP8    | Parallel port at |    P5    |
   |                   |          | 378-37Fh         |          |
   |-------------------+----------+------------------+----------|
   | Turbo LED         |   JP12   | IDE interface    |    P6    |
   |-------------------+----------+------------------+----------|
   | Speaker           |   JP13   | Floppy drive     |    P7    |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   JP14   | Reset switch     |   SW1    |
   | keylock           |          |                  |          |
   |-------------------+----------+------------------+----------|
   | COM1 at 3F8-3FFh  |    P1    | Turbo switch     |   SW2    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            | Jumper/Switch |  Position  |
   |-------------------------------+---------------+------------|
   |>> | Parallel port enabled     |      JP3      | pins 1 & 2 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | Parallel port disabled    |      JP3      | pins 2 & 3 |
   |   |                           |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | IRQ 7 enabled             |      JP5      |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | IRQ 7 disabled            |      JP5      |    Open    |
   |---+---------------------------+---------------+------------|
   |>> | IRQ 3 enabled             |      JP6      |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | IRQ 3 disabled            |      JP6      |    Open    |
   |---+---------------------------+---------------+------------|
   |>> | IRQ 4 enabled             |      JP7      |   Closed   |
   |---+---------------------------+---------------+------------|
   |   | IRQ 4 disabled            |      JP7      |    Open    |
   |---+---------------------------+---------------+------------|
   |>> | Monitor type set color    |      JP9      |   Closed   |
   |   | (AMI BIOS)                |               |            |
   |---+---------------------------+---------------+------------|
   |   | Monitor type set          |      JP9      |    Open    |
   |   | monochrome (AMI BIOS)     |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Security enabled (MR      |      JP9      |   Closed   |
   |   | BIOS)                     |               |            |
   |---+---------------------------+---------------+------------|
   |   | Security disabled (MR     |      JP9      |    Open    |
   |   | BIOS)                     |               |            |
   |---+---------------------------+---------------+------------|
   |>> | CMOS memory normal        |     JP11      |    Open    |
   |   | operation                 |               |            |
   |---+---------------------------+---------------+------------|
   |   | CMOS memory clear         |     JP11      |   Closed   |
   |---+---------------------------+---------------+------------|
   |>> | CPU speed switchable from |     JP15      | pins 1 & 2 |
   |   | keyboard                  |               |   closed   |
   |---+---------------------------+---------------+------------|
   |   | CPU speed switchable from |     JP15      | pins 2 & 3 |
   |   | turbo switch              |               |   closed   |
   |---+---------------------------+---------------+------------|
   |>> | IDE interface enabled     |     SW3/1     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | IDE interface disabled    |     SW3/1     |     On     |
   |---+---------------------------+---------------+------------|
   |>> | Floppy interface enabled  |     SW3/2     |    Off     |
   |---+---------------------------+---------------+------------|
   |   | Floppy interface disabled |     SW3/2     |     On     |
   |---+---------------------------+---------------+------------|
   |>> | Factory configured - do   |     SW3/3     |    N/A     |
   |   | not alter                 |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Floppy interface select   |     SW3/9     |     On     |
   |   | primary (only with 2      |               |            |
   |   | controllers)              |               |            |
   |---+---------------------------+---------------+------------|
   |   | Floppy interface select   |     SW3/9     |    Off     |
   |   | secondary (only with 2    |               |            |
   |   | controllers)              |               |            |
   |---+---------------------------+---------------+------------|
   |>> | Configuration select      |    SW3/10     |     On     |
   |   | manual                    |               |            |
   |---+---------------------------+---------------+------------|
   |   | Configuration select      |    SW3/10     |    Off     |
   |   | automatic                 |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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) 1M x 9  |    NONE    |    NONE    |
   |      |      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             |
   |----------------------------+-------------------------------|
   |            64KB            |          (8) 8K x 8           |
   |------------------------------------------------------------|
   | Note:The location of the cache is unidentified.            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                PARALLEL PORT CONFIGURATION                 |
   |------------------------------------------------------------|
   |        Setting         |      SW3/7      |      SW3/8      |
   |------------------------+-----------------+-----------------|
   |>> |        LPT2        |       Off       |       Off       |
   |---+--------------------+-----------------+-----------------|
   |   |        LPT1        |       Off       |       On        |
   |---+--------------------+-----------------+-----------------|
   |   |        LPT3        |       On        |       Off       |
   |---+--------------------+-----------------+-----------------|
   |   |      Disabled      |       On        |       On        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SERIAL PORT CONFIGURATION                  |
   |------------------------------------------------------------|
   | Serial port (P1) |   Serial port   | SW3/4 | SW3/5 | SW3/6 |
   |                  |      (P2)       |       |       |       |
   |------------------+-----------------+-------+-------+-------|
   |       COM1       |      COM2       |  Off  |  Off  |  Off  |
   |------------------+-----------------+-------+-------+-------|
   |     Disabled     |      COM2       |  Off  |  Off  |  On   |
   |------------------+-----------------+-------+-------+-------|
   |       COM1       |    Disabled     |  Off  |  On   |  Off  |
   |------------------+-----------------+-------+-------+-------|
   |     Disabled     |    Disabled     |  Off  |  On   |  On   |
   |------------------+-----------------+-------+-------+-------|
   |       COM2       |      COM1       |  On   |  Off  |  Off  |
   |------------------+-----------------+-------+-------+-------|
   |     Disabled     |      COM1       |  On   |  Off  |  On   |
   |------------------+-----------------+-------+-------+-------|
   |       COM2       |    Disabled     |  On   |  On   |  Off  |
   |------------------+-----------------+-------+-------+-------|
   |     Disabled     |    Disabled     |  On   |  On   |  On   |
   +------------------------------------------------------------+