
MICRONICS COMPUTERS, INC.

M4LI (REV. 3A)

Processor  AM486SX/80486SX/AM486SX2/80486SX2/SL AM486DX/CX486DX/
           CX486DX2/80486DX/80486DX2/SL80486DX2/AM486DX4/80486DX4/Pentium Overdrive
Processor  25/33/40(internal)/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   SIS
Max.       128MB
Onboard
DRAM
Cache      128/256KB
BIOS       Phoenix
Dimensions 241mm x 218mm
I/O        PS/2 mouse port, PS/2 mouse interface, parallel port, serial port (2),
Options    32-bit PCI slots (4), floppy drive interface, IDE interfaces (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  PS/2 mouse port            CN1       IDE interface 2            J25

  Turbo switch                J2       Speaker                    J31

  Turbo LED                   J3       Floppy drive               J36
                                       interface

  Power LED & keylock         J9       Serial port 1              J37

  PS/2 mouse interface       J10       Serial port 2              J38

  IDE interface 1            J20       Parallel port              J39

  IDE interface LED          J21       32-bit PCI slots         PC1 - PC4

  Reset switch               J23

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             J22              N/A
      alter

     Factory configured - do not             W19           pins 2 & 3
      alter                                                   closed

     PCI clock speed select CPU clock        W20           pins 1 & 2
      speed                                                   closed

      PCI clock speed select  CPU            W20           pins 2 & 3
      clock speed                                             closed

     PS/2 mouse type select PS/2             W33             Closed
      version

      PS/2 mouse type select AT               W33              Open
      version

     Factory configured - do not             W38           pins 2 & 3
      alter                                                   closed

                           DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

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

     8MB        (1) 2M x 36       NONE           NONE          NONE

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

     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

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

     24MB       (1) 2M x 36   (1) 2M x 36    (1) 2M x 36       NONE

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

     32MB       (1) 8M x 36       NONE           NONE          NONE

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

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

     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

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

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

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

     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) 8M x 36       NONE

     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 (A)    (4) 32K x 8    (4) 32K x 8    (1) 32K x 8

   256KB (B)    (4) 64K x 8        NONE       (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

     Size             W23            W34           W35           W36

     None            Open           Open          Open           Open

     128KB           Open           1 & 2       1 & 2, 4 &      1 & 2
                                                    5

   256KB (A)        Closed          2 & 3       2 & 3, 4 &      2 & 3
                                                    5

   256KB (B)        Closed          1 & 2       1 & 2, 3 &      2 & 3
                                                    4

  Note: Pins designated should be in the closed position.

                          CPU TYPE CONFIGURATION

           Type                                   W8

          AM486SX                 12 & 13, 15 & 16, 37 & 38, 42 & 43

          80486SX             3 & 4, 12 & 13, 15 & 16, 19 & 20, 21 & 22,
                                      26 & 27, 37 & 38, 42 & 43

         AM486SX2                 12 & 13, 15 & 16, 37 & 38, 42 & 43

         80486SX2             3 & 4, 12 & 13, 15 & 16, 19 & 20, 21 & 22,
                                      26 & 27, 37 & 38, 42 & 43

        SL AM486DX            1 & 2, 3 & 4, 8 & 9, 11 & 12, 13 & 14, 15 &
                                        16, 19 & 20, 21 & 22,

                             26 & 27, 29 & 30, 33 & 34, 36 & 37, 40 & 41,
                                               42 & 43

          CX486DX            2 & 3, 6 & 7, 9 & 10, 11 & 12, 13 & 14, 15 &
                                        16, 18 & 19, 21 & 22,

                                      24 & 25, 37 & 38, 40 & 41

          80486DX             3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20,
                                          21 & 22, 26 & 27,

                                      37 & 38, 40 & 41, 42 & 43

         CX486DX2            2 & 3, 6 & 7, 9 & 10, 11 & 12, 13 & 14, 15 &
                                        16, 18 & 19, 21 & 22,

                                      24 & 25, 37 & 38, 40 & 41

       80486DX2 (WB)          1 & 2, 3 & 4, 8 & 9, 11 & 12, 13 & 14, 15 &
                                        16, 19 & 20, 21 & 22,

                             26 & 27, 29 & 30, 33 & 34, 36 & 37, 40 & 41,
                                               42 & 43

         80486DX2             3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20,
                                          21 & 22, 26 & 27,

                                      37 & 38, 40 & 41, 42 & 43

         AM486DX4             3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20,
                                          21 & 22, 26 & 27,

                                      37 & 38, 40 & 41, 42 & 43

         80486DX4             3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20,
                                          21 & 22, 26 & 27,

                                      37 & 38, 40 & 41, 42 & 43

           P24T               3 & 4, 5 & 6, 8 & 9, 11 & 12, 13 & 14, 15 &
                                        16, 19 & 20, 21 & 22,

                                  23 & 24, 36 & 37, 39 & 40, 42 & 43

  Note: Pins designated should be in the closed position.

    CPU SPEED CONFIGURATION

   Speed      W15        W16

   25MHz      Open      Open

   33MHz     Closed    Closed

   40MHz      Open     Closed

  50iMHz      Open      Open

  66iMHz     Closed    Closed

  75iMHz      Open      Open

  100iMHz    Closed    Closed

                         CPU VOLTAGE CONFIGURATION

               Size                                   J4

               3.3v                                  Open

                4v                                   Open

                5v                     pins 3 & 5, 4 & 6, 7 & 9, 8 & 10
                                                    closed

