
CHICONY, INC.

CH-486S-16/20/25/33H, CH-486-25/33H

Processor         80486SX/80487SX/80486DX
Processor Speed   16/20/25/33MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             None
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80487SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Turbo LED                   CR1      Power LED & keylock         J20

  External battery            J4       Turbo switch                JP6

  Speaker                     J15      Reset switch                SW1

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP3            Closed

      Monitor type select monochrome           JP3             Open

     CMOS memory normal operation             JP5           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP5           pins 1 & 2
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 256K x 9    (4) 1M x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      32MB        (4) 4M x 9      (4) 4M x 9

                          CPU TYPE CONFIGURATION

       Type               JP1               JP2                JP4

      80486SX          pins 2 & 3           Open              Open
                         closed

      80487SX          pins 1 & 2          Closed           pins 1 & 2
                         closed                              closed

      80486DX          pins 1 & 2          Closed           pins 2 & 3
                         closed                              closed

