ARNOS INSTRUMENTS & COMPUTER SYSTEMS, INC.

386C MK III

Processor         80386DX
Processor Speed   33/40MHz
Chip Set          None
Max. Onboard DRAM 16MB
Cache             64/128/256KB
BIOS              Phoenix
Dimensions        330mm x 218mm
I/O Options       None
NPU Options       80387/3167

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                  Location

  External battery             X4       Turbo switch               X11

  Status display               X6       Reset switch               X15

  Speaker                      X7       Turbo LED                  X16

  Power LED & keylock          X8

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

  »   Battery installed < 5VDC               S1              pins 1 & 2
                                                               closed

      Battery installed > 5VDC               S1              pins 2 & 3
                                                               closed

  »   CPU speed select switchable            S2              pins 1 & 2
      at keyboard                                              closed

      CPU speed select switchable            S2              pins 2 & 3
      at turbo switch                                          closed

  »   Monitor type select                    S3                 Open
      monochrome

      Monitor type select color              S3                Closed

  »   NPU disabled                          SW1/1               Off

      NPU enabled                           SW1/1                On

           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

     DRAM SWITCH CONFIGURATION

  Size     SW1/2   SW1/3    SW1/4

   1MB      On       On       On

   2MB      On       On      Off

   4MB      On      Off       On

   8MB      On      Off      Off

  16MB      Off      On       On

                           CACHE CONFIGURATION

     Size          Bank 0         Bank 1       TAG (D52)      TAG (D56)

     64KB        (4) 8K x 8     (4) 8K x 8    (1) 8K x 8     (1) 8K x 8

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

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

  Note: Bank 0 = D17, D27, D35, & D39. Bank 1 = D9, D26, D28, & D44.