
MICRONICS COMPUTERS, INC.

MPOWER4 PLUS (VER.A)

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

[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

     Cache select write back              U61              Installed

      Cache select write through           U61            Not installed

     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                    W5                 Open
      operation

      CMOS memory clear                     W5                Closed

     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

     Factory configured - do not          W36                 Open
      alter

     VGA IRQ9 disabled                    W303                Open

      VGA IRQ9 enabled                     W303               Closed

     Factory configured - do not         SW1/3                Off
      alter

     Factory configured - do not         SW1/4                Off
      alter

      VPU chip disabled                   SW2/1                 On

      VPU chip enabled                    SW2/1                Off

      Video RAMDAC at snooping            SW2/2                 On
      mode

      Video RAMDAC at normal mode         SW2/2                Off

      VGA BIOS disabled                   SW2/3                 On

      VGA BIOS enabled                    SW2/3                Off

      External speaker disabled           SW2/4                 On

      External speaker enabled            SW2/4                Off

                            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

     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.

                   CPU CONFIGURATION

            Type                        W33

      All other CPUs        pins 1 & 2, 3 & 4 closed

          80486SX                pins 2 & 3 closed

          80486SX2               pins 3 & 4 closed

                    80486DX4 CONFIGURATION

      80486DX4               W32                  W34

      Disabled               Open                 Open

       Enabled         pins 1 & 2 closed   pins 3 & 4 closed

         CPU SPEED CONFIGURATION

    Speed       Switch 1/1   Switch 1/2

    25MHz          Off           On

    33MHz          On            On

    50iMHz         Off           On

    66iMHz         On            On

    75iMHz         Off           On

   100iMHz         On            On

                  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         (2) 256K x 8

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

