
MICRONICS COMPUTERS, INC.

M4PI

Processor  80486SX/SL80486SX/80486DX/SL80486DX/80486DX2/SL80486DX2/
           80486DX4/Pentium Overdrive
Processor  25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Intel
Max.       128MB
Onboard
DRAM
Cache      128/256KB
BIOS       Phoenix
Dimensions 330mm x 218mm
I/O        32-bit PCI slots (3), floppy drive interface, IDE interfaces
Options    (2), parallel port, serial ports (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Auxiliary keyboard         J8        IDE interface LED          J54
  connector

  Serial port 1              J18       Reset switch               J55

  Serial port 2              J21       Speaker                    J56

  Parallel port              J22       Power LED & keylock        J57

  IDE interface (ISA)        J38       IDE interface (PCI)        J81

  Floppy drive               J39       32-bit PCI slots        PC1 - PC3
  interface

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

     PCI IDE IRQ select IRQ14               J19             pins 1 & 2
                                                              closed

      PCI IDE IRQ select IRQ15               J19             pins 2 & 3
                                                              closed

     Factory configured - do not            J20                N/A
      alter

     Factory configured - do not            J66               Open
      alter

     Factory configured - do not            J67                N/A
      alter

     Parallel port ECP mode                 J76               Open
      enabled

      Parallel port ECP mode                 J76              Closed
      disabled

     Factory configured - do not            J80                N/A
      alter

     Flash BIOS write protect              SW1/4               On
      disabled

      Flash BIOS write protect              SW1/4               Off
      enabled

     PCI card installed                    SW1/5               On

      PCI card not installed                SW1/5               Off

     On board mouse enabled (uses          SW1/8               On
      IRQ12)

      On board mouse disabled               SW1/8               Off

     Factory configured - do not            W1                 N/A
      alter

     Factory configured - do not            W5                 N/A
      alter

     Parallel port IRQ select               W8              pins 2 & 3
      IRQ5                                                    closed

      Parallel port IRQ select               W8              pins 1 & 2
      IRQ7                                                    closed

     Flash BIOS mode select                 W10             pins 2 & 3
      normal                                                  closed

      Flash BIOS mode select                 W10             pins 1 & 2
      recovery                                                closed

     PCI IDE chip enabled                   W12              Closed

      PCI IDE chip disabled                  W12               Open

     ISA IDE IRQ select IRQ14               W13             pins 1 & 2
                                                              closed

      ISA IDE IRQ select IRQ15               W13             pins 2 & 3
                                                              closed

  Note: The location of J19 is unidentified.

                           DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

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

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

     16MB       (1) 2M x 36   (1) 2M x 36        NONE          NONE

     24MB       (1) 1M x 36   (1) 1M x 36    (1) 2M x 36    (1) 2M x 36

     24MB       (1) 2M x 36   (1) 2M x 36    (1) 1M x 36    (1) 1M x 36

     32MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36    (1) 2M x 36

     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

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

     48MB       (1) 2M x 36   (1) 2M x 36    (1) 4M x 36    (1) 4M x 36

     48MB       (1) 4M x 36   (1) 4M x 36    (1) 2M x 36    (1) 2M x 36

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

     64MB       (1) 8M x 36   (1) 8M x 36        NONE          NONE

     72MB       (1) 1M x 36   (1) 1M x 36    (1) 8M x 36    (1) 8M x 36

     72MB       (1) 8M x 36   (1) 8M x 36    (1) 1M x 36    (1) 1M x 36

     80MB       (1) 2M x 36   (1) 2M x 36    (1) 8M x 36    (1) 8M x 36

                       DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     80MB       (1) 8M x 36   (1) 8M x 36    (1) 2M x 36    (1) 2M x 36

     96MB       (1) 4M x 36   (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

     96MB       (1) 8M x 36   (1) 8M x 36    (1) 4M x 36    (1) 4M x 36

    128MB       (1) 8M x 36   (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

            CACHE CONFIGURATION

     Size          Bank 0        Bank 1

     128KB       (4) 32K x 8      NONE

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

                  CACHE JUMPER CONFIGURATION

        Size                 J52                  J58

        128KB          pins 2 & 3 closed          Open

        256KB          pins 1 & 2 closed         Closed

                          CPU TYPE CONFIGURATION

      Type            j59            j71          j73            j74

    80486SX         Closed          2 & 3        2 & 3          Open

   SL80486SX        Closed          2 & 3      1 & 2, 3 &      Closed
                                                   4

    80486DX         Closed        1 & 2, 3 &     2 & 3          Open
                                      4

   SL80486DX        Closed        1 & 2, 3 &   1 & 2, 3 &      Closed
                                      4            4

    80486DX2        Closed        1 & 2, 3 &     2 & 3          Open
                                      4

   SL80486DX2       Closed        1 & 2, 3 &   1 & 2, 3 &      Closed
                                      4            4

    80486DX4        Closed        1 & 2, 3 &   1 & 2, 3 &      Closed
                                      4            4

      P24T           Open         1 & 2, 3 &   1 & 2, 3 &      Closed
                                      4            4

  Note: Pins designated should be in the closed position.

    CPU SPEED CONFIGURATION

   Speed     SW1/6      SW1/7

   25MHz       On        On

   33MHz      Off        On

  50iMHz       On        Off

  66iMHz      Off        On

  75iMHz       On        On

  100iMHz     Off        On

                      DMA CONFIGURATION

         DMA                  W6                   W7

        DMA1           pins 1 & 2 closed   pins 1 & 2 closed

        DMA3           pins 2 & 3 closed   pins 2 & 3 closed

       PCI IRQ CONFIGURATION

   IRQ     SW1/1   SW1/2     SW/3

  IRQ5      On       On      Off

  IRQ11     On      Off       On

  IRQ15     Off      On       On

