
CHICONY, INC.

CH-386S-16/20/25G

Processor         80386SX
Processor Speed   16/20/25MHz
Chip Set          OPTI
Max. Onboard DRAM 16MB
Cache             None
BIOS              AMI
Dimensions        220mm x 220mm
I/O Options       None
NPU Options       80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J1       Turbo switch                J4

  Speaker                     J2       Turbo LED                   J5

  Reset switch                J3       External battery            J15

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     NPU mode select asynchronous with         J6            Closed
      CPU

      NPU mode select synchronous with          J6             Open
      CPU

     Monitor type select monochrome           J13             Open

      Monitor type select color                J13            Closed

     CMOS memory normal operation             J14           pins 2 & 3
                                                              closed

      CMOS memory clear                        J14           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

  Size      Bank 0      P-0       Bank 1       P-1      Bank 2    Bank 3

  512KB       (4)        (2)       NONE       NONE       NONE      NONE
    1       44256      41256

  512KB      NONE       NONE       NONE       NONE        (2)      NONE
    2                                                   256K x
                                                          9

  1MB 1       (4)        (2)        (4)        (2)       NONE      NONE
            44256      41256      44256       41256

  1MB 2      NONE       NONE       NONE       NONE        (2)       (2)
                                                        256K x     256K x
                                                          9          9

  1.5MB       (4)        (2)        (4)        (2)        (2)      NONE
            44256      41256      44256       41256     256K x
                                                          9

  2MB 1       (4)        (2)        (4)        (2)        (2)       (2)
            44256      41256      44256       41256     256K x     256K x
                                                          9          9

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

  2.5MB      NONE       NONE       NONE       NONE        (2)      (2) 1M
                                                        256K x      x 9
                                                          9

   3MB        (4)        (2)        (4)        (2)      (2) 1M     NONE
            44256      41256      44256       41256      x 9

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

   5MB        (4)        (2)        (4)        (2)      (2) 1M     (2) 1M
            44256      41256      44256       41256      x 9        x 9

   9MB        (4)        (2)        (4)        (2)      (2) 4M     NONE
            44256      41256      44256       41256      x 9

  10MB       NONE       NONE       NONE       NONE      (2) 1M     (2) 4M
                                                         x 9        x 9

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

  Note:DIP locations and socket sizes are unverified.

  Note 1 :See the next table for the corresponding setting for this
  configuration.

  Note 2 :See the next table for the corresponding setting for this
  configuration.

                         DRAM JUMPER CONFIGURATION

         Size                                  J7

       512KB 1         pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, and 17
                                          & 18 closed

       512KB 2         pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, and 16
                                          & 17 closed

        1MB 1          pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, and 17
                                          & 18 closed

        1MB 2          pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, and 16
                                          & 17 closed

        1.5MB          pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, and 17
                                          & 18 closed

        2MB 1          pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, and 17
                                          & 18 closed

        2MB 2          pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, and 16
                                          & 17 closed

        2.5MB          pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, and 16
                                          & 17 closed

         3MB           pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, and 17
                                          & 18 closed

         4MB           pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, and 16
                                          & 17 closed

         5MB           pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, and 17
                                          & 18 closed

         9MB           pins 2 & 3, 5 & 6, 8 & 9, 11 & 12, 14 & 15, and 17
                                          & 18 closed

         10MB          pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, and 16
                                          & 17 closed

         16MB          pins 1 & 2, 4 & 5, 7 & 8, 10 & 11, 13 & 14, and 16
                                          & 17 closed

  Note 1 :See the previous table for the corresponding setting for this
  configuration.

  Note 2 :See the previous table for the corresponding setting for this
  configuration.

