
MICRONICS COMPUTERS, INC.

M4PE (VER. 2A)

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      128/256/512KB
BIOS       Phoenix
Dimensions 355mm x 305mm
I/O        PS/2 mouse port, parallel port, serial ports (2), 32-bit PCI
Options    slots (3), floppy drive interface, IDE interfaces (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  PS/2 mouse port             J2       External battery           W11

  Speaker                     J5       Power LED & keylock        W12

  Parallel port               J8       Reset switch               W15

  Floppy drive interface      J9       Turbo switch               W29

  Serial port 2              J10       Turbo LED                  W38

  Serial port 1              J11       IDE interface LED 1        W39

  IDE interface 1            J21       IDE interface LED 2        W46

  IDE interface 2            J22       32-bit PCI slots         PC1 - PC3

  Chassis fan power          J102

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     IRQ jumper header disabled              J101             Open

      IRQ jumper header enabled               J101            Closed

     Level 2 cache type select write          W1           pins 2 & 3
      back                                                    closed

      Level 2 cache type select write          W1           pins 1 & 2
      through                                                 closed

     Cache type select write through          W4              Open

      Cache type select write back             W4             Closed

     Factory configured - do not              W6           pins 2 & 3
      alter                                                   closed

     Factory configured - do not              W8             Closed
      alter

     PS/2 mouse installed                    W10             Closed

      PS/2 mouse not installed                W10              Open

     DPU generates parity                    W17           pins 1 & 2
                                                              closed

      CPU generates parity                    W17           pins 2 & 3
                                                              closed

     DPU forces parity error                 W18           pins 1 & 2
                                                              closed

      DPU does not force parity error         W18           pins 2 & 3
                                                              closed

     Factory configured - do not             W19             Closed
      alter

     Cache installed                         W21              Open

      Cache not installed                     W21             Closed

     Level 2 cache wait state 0 wait         W25              Open
      states

      Level 2 cache wait state 1 wait         W25             Closed
      state

     PCI IDE IRQ14 enabled                   W35             Closed

      PCI IDE IRQ14 disabled                  W35              Open

     PCI IDE INT A disabled                  W37             Closed

      PCI IDE INT A enabled                   W37              Open

     PCI IDE IRQ15 disabled                  W38             Closed

      PCI IDE IRQ15 enabled                   W38              Open

     ISA IDE IRQ select IRQ15                W42           pins 2 & 3
                                                              closed

      ISA IDE IRQ select IRQ14                W42           pins 1 & 2
                                                              closed

     Factory configured - do not             W50              Open
      alter

     Parity check enabled                    W60             Closed

      Parity check disabled                   W60              Open

  Note: The location of W60 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) 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) 4M x 36   (1) 4M x 36    (1) 1M x 36    (1) 1M 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) 8M x 36   (1) 8M x 36    (1) 1M x 36    (1) 1M x 36

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

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

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

       512KB              NONE          (4) 128K x 8        (1) 32K x 8

            Note: Bank 0 is factory installed and is not configurable. If
            512KB is used, the onboard cache is disabled. The location of
            the TAG is unidentified.

           CACHE JUMPER CONFIGURATION

   Size       W5       W22       W23       W51

  128KB      Open    Closed     Open      Open

  256KB     Closed    Open     Closed     Open

  512KB     Closed    Open      Open     Closed

   CACHE TAG CONFIGURATION

   Size      W24      W26

  7-bit     Open     Closed

  8-bit     Closed   Closed

  9-bit     Closed    Open

                          CPU TYPE CONFIGURATION

        Type                W2                W3               W33

      80486SX            pins 2 & 3         Closed             Open
                          closed

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

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

      80486DX4        pins 1 & 2, 3 &       Closed             Open
                         4 closed

   80486DX4 (2x)      pins 1 & 2, 3 &       Closed          pins 2 & 3
                         4 closed                             closed

  Pentium Overdrive   pins 1 & 2, 3 &        Open              Open
                         4 closed

                          CPU TYPE CONFIGURATION

       Type             W34           W45           W52           W53

  Non SL-enhanced       Open         Open        pins 1 & 2      Open
                                                  closed

    SL-enhanced        Closed       Closed       pins 2 & 3     Closed
                                                  closed

    CPU SPEED CONFIGURATION

   Speed      W16        W20

   25MHz      Open     Closed

   33MHz     Closed     Open

  50iMHz      Open     Closed

  66iMHz     Closed     Open

  75iMHz      Open     Closed

  100iMHz    Closed     Open

                             DMA CONFIGURATION

             DMA                       W43                   W44

          PIO transfer               Open                   Open

              DMA 6             pins 1 & 2 closed     pins 1 & 2 closed

              DMA 7             pins 2 & 3 closed     pins 2 & 3 closed

