
AMERICAN DIGICOM CORPORATION

DIGIS-486E

Processor         80486SX/80487SX/80486DX
Processor Speed   20/25/33/50MHz
Chip Set          OPTI
Max. Onboard DRAM 128MB
SRAM Cache        64/128/256/512KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  Speaker                      J4       Reset switch               S9

  Power LED & keylock          J5

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     EISA cards configured as ISA             JP1            Closed

      EISA cards configured as EISA            JP1             Open

     I/O bus speed select synchronous         JP4           pins 1 & 2
      with chipset                                            closed

      I/O bus speed select 8MHz                JP4           pins 2 & 3
                                                              closed

     Monitor type select color                JP5            Closed

      Monitor type select monochrome           JP5             Open

     Reserved for future applications         JP7              N/A

     Clock frequency select single            JP9           pins 1 & 2
                                                              closed

      Clock frequency select double            JP9           pins 2 & 3
                                                              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) 1M x 9    (4) 4M 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

                            CACHE CONFIGURATION

   Size       Bank 0    Bank 1      U51       U52        U53       U66

   64KB      (4) 8K x    (4) 8K    (1) 64K   (1) 8K     NONE      (1) 16K
                8         x 8       x 1       x 8                  x 1

   128KB      (4) 32K    NONE      (1) 64K   (1) 8K     NONE      (1) 16K
               x 8                  x 1       x 8                  x 1

   256KB      (4) 32K   (4) 32K    (1) 64K   (1) 8K     (1) 8K    (1) 16K
               x 8        x 8       x 1       x 8        x 8       x 1

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

                     CACHE JUMPER CONFIGURATION

   Size     JP11      JP12     JP13      JP14      JP15      JP16

   64KB     Open      Open     Open      Open      Open      Open

  128KB     Open      Open     Closed    Open     Closed     Open

  256KB     Open     Closed    Closed    Closed   Closed     Open

  512KB     Closed   Closed    Closed    Closed   Closed    Closed

                          CPU TYPE CONFIGURATION

          Type                     JP8                      JP10

         80486SX            pins 2 & 3 closed               open

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

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

   CPU SPEED CONFIGURATION

  Speed      JP2      JP3

  25MHz     Open      Open

  33MHz     Closed    Open

  40MHz     Open     Closed

  50MHz     Closed   Closed

