
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

[Image]

                                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 2   Bank 3
                       (P-0)                  (P-1)

  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 x    256K x
                                                           9         9

   2MB       (4)         (2)       NONE        NONE      NONE      NONE
           441000      411000

   2MB      NONE        NONE       NONE        NONE      (2) 1M    NONE
                                                          x 9

   4MB       (4)         (2)        (4)         (2)      NONE      NONE
           441000      411000     441000      411000

   4MB      NONE        NONE       NONE        NONE      (2) 1M    (2) 1M
                                                          x 9       x 9

   8MB      NONE        NONE       NONE        NONE      (2) 4M    NONE
                                                          x 9

  16MB      NONE        NONE       NONE        NONE      (2) 4M    (2) 4M
                                                          x 9       x 9

