DATAEXPERT CORPORATION

EISA 486WB

Processor         80486SX/80486DX/ODP486SX
Processor Speed   20/25/33/50MHz
Chip Set          OPTI
Max. Onboard DRAM 128MB
SRAM Cache        64/128/256/512KB
BIOS              AMI
Dimensions        330.2mm x 218.4mm
I/O Options       None
NPU Options       4167

[Image]

                             CONNECTIONS

  Purpose               Location    Purpose                Location

  Power LED & keylock      J1       Turbo switch              J5

  Speaker                  J2       Turbo LED                 J6

  Reset switch             J3

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

  »   Monitor type select color              JP13             closed

      Monitor type select monochrome         JP13              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) 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

     64MB        (4) 16M x 9        NONE

     128MB       (4) 16M x 9    (4) 16M x 9

                         SRAM JUMPER CONFIGURATION

    Jumper         64KB           128KB          256KB          512KB

     JP4         pins 2 & 3     pins 1 & 2     pins 2 & 3     pins 1 & 2
                  closed         closed         closed          closed

     JP5           open           open          closed          closed

     JP6           open           open           open           closed

     JP7           open          closed         closed          closed

     JP8           open          closed         closed          closed

     JP9           open           open          closed          closed

     JP10          open           open           open           closed

                            SRAM CONFIGURATION

   Size        Cache      Location     TAG (U15)    TAG (U16)    TAG (U17
               SRAM                                               & 18)

   64KB      (8) 8K x    Banks 0 & 1    (1) 8K x      NONE      (1) 64K x
                8                          8                        1

   128KB      (4) 32K      Bank 0       (1) 8K x      NONE      (1) 64K x
               x 8                         8                        1

   256KB      (8) 32K    Banks 0 & 1    (1) 8K x    (1) 8K x    (1) 64K x
               x 8                         8           8            1

   512KB     (4) 128K      Bank 0      (1) 32K x      NONE      (1) 64K x
               x 8                         8                        1

                         CPU JUMPER CONFIGURATION

      CPU         Jumper JP1       Jumper     Jumper JP3         JP15
                                    JP2

   ODP486SX     pins 1 & 2 and      open       pins 1 & 2     pins 1 & 2
                 3 & 4 closed                   closed          closed

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

    80486SX       pins 2 & 3       closed        open         pins 2 & 3
                    closed                                      closed

                          CPU SPEED CONFIGURATION

      Speed          Jumper JP11       Jumper JP12            JP14

      25MHz             open               open         pins 2 & 3 closed

      33MHz             open              closed        pins 2 & 3 closed

      50MHz            closed             closed        pins 1 & 2 closed