
MAGITRONICS

386-40UM

Processor         80386DX
Processor Speed   33/40MHz
Chip Set          UMC
Max. Onboard DRAM 32MB
SRAM Cache        64/128/256KB
BIOS              AMI
Dimensions        260mm x 220mm
I/O Options       None
NPU Options       80387DX/3167

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  Power LED & keylock         J1       Turbo switch                J4

  Speaker                     J2       Turbo LED                   J5

  Reset switch                J3       External battery            J11

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch         Position

     NPU enabled                            J7                Closed

      NPU disabled                           J7                 Open

     Monitor type select color              J8                Closed

      Monitor type select                    J8                 Open
      monochrome

     Battery select internal                J9              pins 2 & 3
                                                               closed

      Battery select external                J9              pins 1 & 2
                                                               closed

     CMOS memory normal operation           J11             pins 2 & 3
                                                               closed

      CMOS memory clear                      J11             pins 1 & 2
                                                               closed

  Note: When selecting an external battery (J9), the external battery
  must be connected to J11.

              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

                    SRAM CONFIGURATION

     Size          Cache         Location         TAG

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

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

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

                         SRAM JUMPER CONFIGURATION

    Size         W1           W2           W3           W4         W5

    64KB       pins 2 &      Open         Open       pins 1 &    pins 1 &
                  3                                     2           2

    128KB      pins 1 &      Open        Closed      pins 2 &    pins 1 &
                  2                                     3           2

    256KB      pins 2 &     Closed       Closed      pins 2 &    pins 2 &
                  3                                     3           3

  Note: Pins designated should be in the closed position

