
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

