
CHICONY, INC.

CH-486-33A

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

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery            J10       Turbo LED                 JP12

  Power LED & keylock         J23       Reset switch               SW1

  Speaker                     J24       Turbo switch               SW2

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                JP1            Closed

      Monitor type select monochrome           JP1             Open

     CMOS memory normal operation             JP2           pins 2 & 3
                                                              closed

      CMOS memory clear                        JP2           pins 1 & 2
                                                              closed

     Factory configured - do not alter        JP4           pins 2 & 3
                                                              closed

     Factory configured - do not alter       JP10             Open

              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

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

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

                    CACHE CONFIGURATION

     Size          Bank 0       U33 (TAG)      U34 (TAG)

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

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

       CACHE JUMPER CONFIGURATION

   Size      JP8       JP9      JP10

   64KB      Open     Open      Open

  256KB     Closed   Closed    Closed

                          CPU TYPE CONFIGURATION

      Type               JP5                JP6                JP7

     80486SX            Open             pins 2 & 3            Open
                                           closed

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

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

