CHICONY, INC.

CH-486

Processor             80486SX/80487SX/80486DX
Processor Speed       20/25/33/50MHz
Chip Set              OPTI
Maximum Onboard Memory32MB
Cache                 64/128/256KB
BIOS                  AMI
Dimensions            330mm x 218mm
I/O Options           None
NPU Options           None

[Image]

                             CONNECTIONS

       Function           Label          Function           Label

  External battery         J1       Power LED & keylock      JP18

  Speaker                  J17      Reset switch             sw1

  Turbo LED               JP11      Turbo switch             SW2

                        USER CONFIGURABLE SETTINGS

                 Setting                      Label          Position

  »   CMOS memory normal operation             JP1          Pins 2 & 3
                                                              closed

      CMOS memory clear                        JP1          Pins 1 & 2
                                                              closed

      Monitor type select color                JP2            Closed

      Monitor type select monochrome           JP2             Open

  »   Jumper information unavailable           JP5             N/A

                     DRAM

      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

      20MB        (4) 1M x 9      (4) 4M x 9

      20MB        (4) 4M x 9      (4) 1M x 9

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

                        CACHE SIZE

     Size          Bank 0         Bank 1          TAG

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8

     128KB      (4) 32K x 8        None       (1) 8K x 8

     256KB      (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

                               CACHE JUMPER

     Size           JP3            JP4            JP6            JP7

     64KB        Pins 2 & 3        Open          Open            Open
                  closed

    128KB        Pins 1 & 2       Closed        Closed           Open
                  closed

    256KB        Pins 2 & 3       Closed        Closed          Closed
                  closed

                                 CPU TYPE

      Setting             JP8               JP9               JP10

      80486SX          Pins 1 & 2          Closed           Pins 1 & 2
                         closed                              closed

      80487SX          Pins 2 & 3           Open              Open
                         closed

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

                CPU SPEED

       Setting               JP12

        20MHz         Pins 2 & 3 closed

        25MHz         Pins 2 & 3 closed

        33MHz         Pins 2 & 3 closed

        50MHz         Pins 1 & 2 closed