CHICONY, INC.

CH-48633C

Processor         80486SX/80487SX/80486DX
Processor Speed   20/25/33MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             64/128/256KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J3       External battery            J11

  Speaker                     J4       Turbo LED                   JP1

  Turbo switch                J5       Reset switch                S6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                JP1            Closed

      Monitor type select monochrome           JP1             Open

  »   Factory configured - do not alter        JP9             Open

  »   CPU speed select iOSC/2                 JP10           pins 2 & 3
                                                              closed

      CPU speed select iOSC/1                 JP10           pins 1 & 2
                                                              closed

           DRAM CONFIGURATION

     Size        Bank 0        Bank 1

     4MB        (4) 1M x 9      NONE

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

     16MB       (4) 4M x 9      NONE

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

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

                            CACHE CONFIGURATION

   Size      Bank 0    Bank 1    TAG (U34,U36)     TAG (U40)   TAG (U41)

   64KB      (4) 8K     (4) 8K    (2) 64K x 1      (1) 8K x       NONE
              x 8        x 8                          8

   128KB     (4) 32K    NONE      (2) 64K x 1      (1) 8K x       NONE
              x 8                                     8

   256KB     (4) 32K   (4) 32K    (2) 64K x 1      (1) 8K x    (1) 8K x 8
              x 8        x 8                          8

                   CACHE JUMPER CONFIGURATION

   Size        JP2        JP4        JP5        JP7       JP8

   64KB       Open       Open       2 & 3      Open       Open

   128KB     Closed      Open       1 & 2      Open      Closed

   256KB     Closed     Closed      2 & 3     Closed     Closed

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

      Type             JP11                JP12                JP13

    80486SX         pins 2 & 3      pins 2 & 3 closed       pins 1 & 2
                      closed                                  closed

    80487SX         pins 2 & 3      pins 1 & 2 and 3 &      pins 1 & 2
                      closed             4 closed             closed

    80486DX         pins 1 & 2      pins 1 & 2 and 3 &      pins 2 & 3
                      closed             4 closed             closed

   CPU SPEED CONFIGURATION

   Type     JP14      JP15

  25MHz     Open      Open

  33MHz     Closed    Open