
MICRONICS COMPUTERS, INC.

JX30 VL-BUS

Processor        80486SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive
Processor Speed  25/33/50(internal)/66(internal)MHz
Chip Set         Micronics
Max. Onboard DRAM64MB
Cache            64/128/256KB
BIOS             Phoenix
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2), floppy drive interface,

                 IDE interface, parallel port, serial ports (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                 Location

  IDE interface               CN1       Power LED & keylock       J34

  Floppy drive interface      CN2       32-bit VESA Local          S1
                                        bus slot

  External battery             J8       32-bit VESA Local          S2
                                        bus slot

  External keyboard           J10       Hard drive LED            W11
  connector

  Serial port (COM1)          J12       Reset switch              W12

  Parallel port               J15       Turbo LED                 W13

  Serial port (COM2)          J16       Turbo switch              W14

  Speaker                     J33

                        USER CONFIGURABLE SETTINGS

              Function                   Jumper/Switch        Position

     Factory configured - do not        SW1/switch 2            On
      alter

     Factory configured - do not        SW1/switch 3           Off
      alter

     Factory configured - do not        SW1/switch 4           Off
      alter

     Parallel port unidirectional            W5             pins 1 & 2
      (for printer)                                            closed

      Parallel port bi-directional            W5             pins 2 & 3
                                                               closed

     Monitor type select color               W6               Closed

      Monitor type select monochrome          W6                Open

     Factory configured - do not             W7                Open
      alter

     CMOS memory normal operation            W8             pins 2 & 3
                                                               closed

      CMOS memory clear                       W8             pins 1 & 2
                                                               closed

     Factory configured - do not             W20            pins 1 & 2
      alter                                                    closed

      DALLAS Real Time Clock memory           W31              Closed
      clear

      Real Time Clock normal                  W31               Open
      operation

     Local bus Bus-Mastering                 W40               Open
      peripherals enabled

      Local bus Bus-Mastering                 W40              Closed
      peripherals disabled

           REAL TIME CLOCK CONFIGURATION

     Real Time Clock                 W1

  DALLAS Real Time Clock           Closed

     MOTOROLA 146818                Open

                            DRAM CONFIGURATION

     Size         Bank 0          Bank 1         Bank 2         Bank 3

     1MB         (1) 256K x        NONE           NONE           NONE
                    36

     2MB         (1) 256K x     (1) 256K x        NONE           NONE
                    36              36

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

     6MB         (1) 256K x     (1) 256K x     (1) 1M x 36       NONE
                    36              36

     8MB        (1) 1M x 36    (1) 1M x 36        NONE           NONE

     10MB        (1) 256K x     (1) 256K x     (1) 1M x 36   (1) 1M x 36
                    36              36

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

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

     16MB       (1) 4M x 36        NONE           NONE           NONE

     18MB        (1) 256K x     (1) 256K x     (1) 4M x 36       NONE
                    36              36

     20MB       (1) 1M x 36    (1) 4M x 36        NONE           NONE

     24MB       (1) 1M x 36    (1) 1M x 36     (1) 4M x 36       NONE

     32MB       (1) 4M x 36    (1) 4M x 36        NONE           NONE

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

     40MB       (1) 1M x 36    (1) 1M x 36     (1) 4M x 36   (1) 4M x 36

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

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

                  CACHE CONFIGURATION

    Size        Bank 0         Bank 1          TAG

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

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

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

                        CACHE JUMPER CONFIGURATION

   Size         W64         W65          W66          W67         W68

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

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

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

  Note:Pins designated should be in the closed position.

                    CPU TYPE CONFIGURATION

        Type                  W70                  W71

       80486SX         pins 1 & 2 closed           N/A

       80486DX         pins 2 & 3 closed    pins 2 & 3 closed

      ODP486SX                N/A           pins 1 & 2 closed

      80486DX2         pins 2 & 3 closed    pins 2 & 3 closed

  Pentium Overdrive    pins 2 & 3 closed    pins 2 & 3 closed

    CPU SPEED CONFIGURATION

     Speed       SW1/switch 1

     25MHz            On

     33MHz            Off

    50i MHz           On

    66i MHz           Off

