
MICRONICS COMPUTERS, INC.

MPOWER4

Processor     80486SX/ODP486SX/80486DX/80486DX2/Pentium Overdrive
Processor     25/33/50(internal)/50/66(internal)/75(internal),
Speed         100(internal)MHz
Chip Set      Micronics
Max. Onboard  64MB
DRAM
Cache         64/128/256KB
BIOS          Phoenix
Dimensions    330mm x 218mm
I/O Options   32-bit VESA local bus, floppy drive interface, IDE
              interface, parallel port, PS/2 mouse port, serial ports (2),
              VGA feature connector, VGA port
NPU Options   None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Parallel port               J1       Video feature              J31
                                       connector

  Serial port 2               J2       VGA port                   J32

  Serial port 1               J3       Turbo LED                  W18

  Power LED & keylock         J7       Turbo switch               W19

  PS/2 mouse port            J10       Reset switch               W20

  IDE interface              J26       IDE interface LED          W21

  Floppy drive               J27       32-bit VESA Local bus      SL1
  interface                            slots

  Speaker                    J30

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

     Real time clock installed              W1               Closed

      Real time clock not                    W1                Open
      installed

     Monitor type select color              W2               Closed

      Monitor type select                    W2                Open
      monochrome

     IRQ12 PS/2 mouse enabled               W3               Closed

      PS/2 mouse disabled                    W3                Open

     Parity enabled                         W4               Closed

      Parity disabled                        W4                Open

     CMOS memory normal operation           W5               Closed

      CMOS memory clear                      W5                Open

     Super I/O enabled                      W7                Open

      Super I/O disabled                     W7               Closed

     Flash BIOS write protect               W8                Open
      enabled

      Flash BIOS write protect               W8               Closed
      disabled

     PQFP not installed                     W13               Open

      PQFP disabled by Overdrive             W13             pins 1 & 2
      processor                                               closed

      PQFP manually disabled                 W13             pins 2 & 3
                                                              closed

     Factory configured - do not            W15             pins 1 & 2
      alter                                                   closed

     Factory configured - do not            W31               Open
      alter

     80486SX CPU enabled                    W33             pins 2 & 3
                                                              closed

      80486SX CPU disabled                   W33            1 & 2, 3 & 4
                                                              closed

     Factory configured - do not            W36               Open
      alter

     VGA IRQ9 disabled                     W303               Open

      VGA IRQ9 enabled                      W303              Closed

     Factory configured - do not           SW1/3              Open
      alter

     Factory configured - do not           SW1/4              Open
      alter

      VPU chip disabled                     SW2/1              Open

      VPU chip enabled                      SW2/1             Closed

      Video RAMDAC at snooping              SW2/2              Open
      mode

      Video RAMDAC at normal mode           SW2/2             Closed

      VGA BIOS disabled                     SW2/3              Open

      VGA BIOS enabled                      SW2/3             Closed

      External speaker disabled             SW2/3              Open

      External speaker enabled              SW2/3             Closed

                            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) 4M 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) 32K x 8

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

                      CACHE JUMPER CONFIGURATION

  Size     W10      W11      W16      W17     W22      W23      W24

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

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

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

  Note:Pins designated should be in the closed position.

                    80486DX4 CONFIGURATION

      80486DX4               W32                  W34

      Disabled         pins 1 & 2 closed   pins 3 & 4 closed

       Enabled               Open                 Open

         CPU SPEED CONFIGURATION

    Speed       Switch 1/1   Switch 1/2

    25MHz         Open         Closed

    33MHz        Closed        Closed

    50iMHz        Open         Closed

    66iMHz       Closed        Closed

    75iMHz        Open         Closed

   100iMHz       Closed        Closed

                  DMA CHANNEL CONFIGURATION

     DMA Channel             W98                  W99

      Channel 1        pins 1 & 2 closed   pins 1 & 2 closed

      Channel 2        pins 2 & 3 closed   pins 2 & 3 closed

                      VRAM CONFIGURATION

        Size                Bank 0               Bank 1

         1MB             (2) 512K x 8             NONE

         2MB             (2) 512K x 8         (8) 256K x 4

  Note: Bank 0 is factory installed and is not configurable.

