BEC COMPUTER ENTERPRISE

80486AT (Ver. 1.0)

Processor         80486DX
Processor Speed   25/33MHz
Chip Set          None
Max. Onboard DRAM 16MB
SRAM Cache        64/256KB
BIOS              AMI
Dimensions        355mm x 304mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Reset switch                W1       Power LED & keylock         W5

  Turbo switch                W3       Speaker                     W10

  Turbo LED                   W4       External battery            W11

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     1MB        (4) 256K x 9      NONE           NONE           NONE

     2MB        (4) 256K x 9   (4) 256K x 9      NONE           NONE

     3MB        (4) 256K x 9   (4) 256K x 9   (4) 256K x 9      NONE

     4MB        (4) 256K x 9   (4) 256K x 9   (4) 256K x 9  (4) 256K x 9

     4MB        (4) 1M x 9        NONE           NONE           NONE

     5MB        (4) 256K x 9   (4) 1M x 9        NONE           NONE

     6MB        (4) 256K x 9   (4) 256K x 9   (4) 1M x 9        NONE

     7MB        (4) 256K x 9   (4) 256K x 9   (4) 256K x 9   (4) 1M x 9

     8MB        (4) 1M x 9     (4) 1M x 9        NONE           NONE

     9MB        (4) 256K x 9   (4) 1M x 9     (4) 1M x 9        NONE

     10MB       (4) 256K x 9   (4) 256K x 9   (4) 1M x 9     (4) 1M x 9

     12MB       (4) 1M x 9     (4) 1M x 9     (4) 1M x 9        NONE

     13MB       (4) 256K x 9   (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

     16MB       (4) 1M x 9     (4) 1M x 9     (4) 1M x 9     (4) 1M x 9

                      CPU SWITCH (SW2) CONFIGURATION

    Size     SW2/switch 1    SW2/switch 2    SW2/switch 3   SW2/switch 4

    1MB          open            open            open           open

    2MB         closed           open            open           open

    3MB          open           closed           open           open

    4MB         closed          closed           open           open

    4MB          open            open           closed          open

    5MB          open            open           closed         closed

    6MB          open           closed           open          closed

    7MB         closed           open            open          closed

    8MB         closed           open           closed          open

    9MB          open           closed          closed         closed

    10MB        closed          closed           open          closed

    12MB         open           closed          closed          open

    13MB        closed          closed          closed         closed

    16MB        closed          closed          closed          open

                         SRAM JUMPER CONFIGURATION

      Size            Jumper W6         Jumper W8           Jumper W9

      64KB            pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

      256KB           pins 1 & 2        pins 2 & 3      pins 2 & 3 closed
                       closed             closed

             SRAM CONFIGURATION

     Size          Bank 0          TAG

     64KB        (8) 8K x 8    (2) 16K x 4

     256KB       (8) 32K x 8   (2) 16K x 4