ACER, INC.

V433S

Processor        CX486S/80486SX/80486DX/80486DX2
Processor Speed  25/33/40/50(internal)/50/66(internal)MHz
Chip Set         SIS
Max. Onboard DRAM32MB
Cache            128/256KB
BIOS             AMI
Dimensions       254mm x 220mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose               Location       Purpose               Location

  Power LED &         JP2 (pins 1 -    Turbo switch        JP2 (pins 15 -
  keylock                  5)                                   17)

  Speaker             JP2 (pins 6 -    Reset switch        JP2 (pins 19 -
                           10)                                  20)

  Turbo LED           JP2 (pins 12 -   32-bit VESA           SL1 & SL2
                           13)         local bus slots

                        USER CONFIGURABLE SETTINGS

                Function                      Jumper         Position

  »   CMOS memory normal operation              J1             Open

      CMOS memory clear                         J1           pins 2 & 3
                                                              closed

  »   Fast A20 select CMOS                     JP20          pins 2 & 3
      configuration                                           closed

      Fast A20 select keyboard                 JP20          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

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

      8MB         (4) 2M x 9         NONE

      16MB        (4) 4M x 9         NONE

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     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 CONFIGURATION

        Size                 JP9                  JP10

        128KB          pins 1 & 2 closed   pins 1 & 2 closed

        256KB          pins 2 & 3 closed   pins 2 & 3 closed

                CPU SPEED CONFIGURATION

           Speed                        JP7

           25MHz                 pins 5 & 6 closed

           33MHz                 pins 1 & 2 closed

           40MHz             pins 1 & 2, 3 & 4 closed

           50iMHz                pins 5 & 6 closed

           50MHz                 pins 3 & 4 closed

           66iMHz                pins 1 & 2 closed