ARNOS INSTRUMENTS & COMPUTER SYSTEMS, INC.

A386-25/33/40C

Processor         80386DX
Processor Speed   25/33/40MHz
Chip Set          AIC
Max. Onboard DRAM 64MB
Cache             64/128/256KB
BIOS              AMI/Phoenix
Dimensions        259mm x 219mm
I/O Options       None
NPU Options       3167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            X5       Turbo switch                X15

  Reset switch                X13      Speaker                     X16

  Turbo LED                   X14      Power LED & keylock         X17

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Factory configured - do not alter        S3              open

  »   Battery type select 5VDC or less         S4            pins 1 & 2
                                                              Closed

      Battery type select greater than         S4            pins 2 & 3
      5VDC                                                    Closed

  »   Monitor type select color                S5             closed

      Monitor type select monochrome           S5              open

  »   Factory configured - do not alter        S6            pins 2 & 3
                                                              Closed

  »   Battery select internal                  S7            pins 1 & 2
                                                              Closed

      Battery select external                  S7            pins 2 & 3
                                                              Closed

  »   Power good signal detect from            S9            pins 1 & 2
      board                                                   Closed

      Power good signal detect from            S9            pins 2 & 3
      power supply                                            Closed

                          CPU TYPE CONFIGURATION

           CPU Type                   S6                       S9

        80486DX2            pins 1 & 2 closed       pins 1 & 2 and 3 & 4
                                                           closed

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

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

         80486SX                   open              pins 2 & 3 closed

              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

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

                        CACHE JUMPER CONFIGURATION

      Size               S1                 S2                 S8

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

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

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

                    CACHE CONFIGURATION

     Size          Cache         Location         TAG

     64KB        (8) 8K x 8    Banks 0 & 1    (2) 8K x 8

     128KB      (4) 32K x 8       Bank 0      (2) 8K x 8

     256KB      (8) 32K x 8    Banks 0 & 1    (2) 32K x 8