SHUTTLE COMPUTER INTERNATIONAL, INC.

HOT-406

Processor         80486SX/80487SX/80486DX
Processor Speed   25/50MHz
Chip Set          UMC
Max. Onboard DRAM 64MB
SRAM Cache        64/128/256KB
BIOS              AMI
Dimensions        220mm x 330mm
I/O Options       None
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J1       Reset switch                J4

  Speaker                     J2       Turbo LED                   J5

  Turbo switch                J3       External battery            J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Monitor type select color                W1             closed

      Monitor type select monochrome           W1              open

                            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    (1) 256K x        NONE
                                                  36

     4MB       (4) 256K x 9   (4) 256K x 9    (1) 256K x    (1) 256K x 36
                                                  36

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

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

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

     12MB       (4) 1M x 9     (4) 1M x 9    (1) 1M x 36        NONE

     16MB       (4) 1M x 9     (4) 1M x 9    (1) 1M x 36     (1) 1M x 36

     16MB       (4) 4M x 9        NONE           NONE           NONE

     20MB       (4) 1M x 9     (4) 4M x 9        NONE           NONE

     32MB       (4) 4M x 9     (4) 4M x 9        NONE           NONE

     48MB       (4) 4M x 9     (4) 4M x 9    (1) 4M x 36        NONE

     64MB       (4) 4M x 9     (4) 4M x 9    (1) 4M x 36     (1) 4M x 36

                         SRAM JUMPER CONFIGURATION

   Size      SW1/Switches      Jumper      Jumper     Jumper    Jumper W9
                 1-4             W6         W7          W8

   64KB      all switches     pins 1 &    pins 1 &     open      pins 1 &
                 open            2           2                      2

  128KB     1&4 closed 2&3    pins 2 &    pins 1 &   pins 1 &    pins 2 &
                 open            3           2          2           3

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

  Note:Pins designated should be in the closed position.

                            SRAM CONFIGURATION

     Size        Cache SRAM      Location      TAG (U32)      TAG (U33)

     64KB        (8) 8K x 8    Banks 0 & 1    (1) 16K x 4    (1) 8K x 8

     128KB      (4) 32K x 8       Bank 0      (1) 16K x 4    (1) 32K x 8

     256KB      (8) 32K x 8    Banks 0 & 1    (1) 16K x 4    (1) 32K x 8

                          CPU TYPE CONFIGURATION

        CPU          Jumper W2        Jumper W3            Jumper W4

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

      80487SX           open          pins 2 & 3       pins 1 & 2 and 3 &
                                        closed             4 closed

      80486SX          closed            open          pins 2 & 3 closed