SPRING CIRCLE COMPUTER, INC.
============================

   80386SX

                                                                  
   Processor             80386SX                                  
   Processor Speed       25MHz                                    
   Chip Set              Intel                                    
   Max. Onboard DRAM     16MB                                     
   Cache                 None                                     
   BIOS                  AMI                                      
   Dimensions            220mm x 236mm                            
   I/O Options           None                                     
   NPU Options           80387SX                                  

<gopher://bitreich.org/I/th99/m/S-T/30003-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | External battery    |   J17    | Turbo switch   |   J24    |
   |---------------------+----------+----------------+----------|
   | Speaker             |   J21    | Turbo LED      |   J25    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |   J22    | Reset switch   |   J26    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  J16   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  J16   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Battery select internal          |  J17   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Battery select external          |  J17   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  J18   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  J18   |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Floppy drive current select low  |  J19   |    Open    |
   |   | (12mA)                           |        |            |
   |---+----------------------------------+--------+------------|
   |   | Floppy drive current select high |  J19   |   Closed   |
   |   | (24mA)                           |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Pipeline mode disabled           |  J20   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Pipeline mode enabled            |  J20   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU disabled                     |  J23   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU enabled                      |  J23   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | Bank 0  | Parity  | Bank 1  | Parity | Bank | Bank |
   |       |         |  (P-0)  |         | (P-1)  |  2   |  3   |
   |-------+---------+---------+---------+--------+------+------|
   | 512KB |   (4)   |   (2)   |  NONE   |  NONE  | NONE | NONE |
   |       |  44256  |  41256  |         |        |      |      |
   |-------+---------+---------+---------+--------+------+------|
   | 512KB |  NONE   |  NONE   |  NONE   |  NONE  | (2)  | NONE |
   |       |         |         |         |        | 256K |      |
   |       |         |         |         |        | x 9  |      |
   |-------+---------+---------+---------+--------+------+------|
   |  1MB  |   (4)   |   (2)   |   (4)   |  (2)   | NONE | NONE |
   |       |  44256  |  41256  |  44256  | 41256  |      |      |
   |-------+---------+---------+---------+--------+------+------|
   |  1MB  |  NONE   |  NONE   |  NONE   |  NONE  | (2)  | (2)  |
   |       |         |         |         |        | 256K | 256K |
   |       |         |         |         |        | x 9  | x 9  |
   |-------+---------+---------+---------+--------+------+------|
   |  2MB  |   (4)   |   (2)   |  NONE   |  NONE  | NONE | NONE |
   |       | 441000  | 411000  |         |        |      |      |
   |-------+---------+---------+---------+--------+------+------|
   |  2MB  |  NONE   |  NONE   |  NONE   |  NONE  | (2)  | NONE |
   |       |         |         |         |        | 1M x |      |
   |       |         |         |         |        |  9   |      |
   |-------+---------+---------+---------+--------+------+------|
   |  4MB  |   (4)   |   (2)   |   (4)   |  (2)   | NONE | NONE |
   |       | 441000  | 411000  | 441000  | 411000 |      |      |
   |-------+---------+---------+---------+--------+------+------|
   |  4MB  |  NONE   |  NONE   |  NONE   |  NONE  | (2)  | (2)  |
   |       |         |         |         |        | 1M x | 1M x |
   |       |         |         |         |        |  9   |  9   |
   |-------+---------+---------+---------+--------+------+------|
   |  8MB  |  NONE   |  NONE   |  NONE   |  NONE  | (2)  | NONE |
   |       |         |         |         |        | 4M x |      |
   |       |         |         |         |        |  9   |      |
   |-------+---------+---------+---------+--------+------+------|
   | 16MB  |  NONE   |  NONE   |  NONE   |  NONE  | (2)  | (2)  |
   |       |         |         |         |        | 4M x | 4M x |
   |       |         |         |         |        |  9   |  9   |
   +------------------------------------------------------------+