
IBM CORPORATION

APTIVA M30 (250-0441), APTIVA M31 (250-0441), APTIVA M40 (12-10609), APTIVA
M41 (250-0442), APTIVA M50 (250-0440), APTIVA M53 (250-0443), APTIVA M71
(250-0444)

Processor                  CX M1/Pentium
Processor Speed            75/100/133MHz
Chip Set                   VLSI
Video Chip Set             Trident
Maximum Onboard Memory     128MB (EDO supported)
Maximum Video Memory       2MB
Cache                      256/512KB
BIOS                       Unidentified
Dimensions                 330mm x 218mm
I/O Options                Floppy drive interface, IDE interfaces (2),
                           parallel port, PS/2 mouse port, serial ports
                           (2), VESA feature connector, VGA port, riser
                           slot, cache slots (2), internal VGA connector,
                           power switch connector, wake up on ring
                           connector
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  PS/2 mouse port            CN2       Internal VGA               J11
                                       connector

  Serial port 2              CN3       Power switch               J16
                                       connector

  Serial port 1              CN4       IDE interface LED          J17

  Parallel port              CN5       VESA feature               J18
                                       connector

  VGA port                   CN6       Speaker                    JP1

  Floppy drive interface     CN7       Chassis fan power          JP2

  IDE interface 2            CN8       Riser slot                 SL1

  IDE interface 1            CN9       Cache slots              SL2 & SL3

  Wake up on ring             J1
  connector

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           JP2          Unidentified
      alter

     CMOS memory normal operation         JP12        Pins 1 & 2 closed

      CMOS memory clear                    JP12        Pins 2 & 3 closed

      Floppy drive write enabled           JP22        Pins 1 & 2 closed

      Floppy drive write disabled          JP22        Pins 2 & 3 closed

                            DRAM CONFIGURATION

          Size                    Bank 0                   Bank 1

           8MB                 (2) 1M x 36                  None

          16MB                 (2) 2M x 36                  None

          16MB                 (2) 1M x 36              (2) 1M x 36

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

          32MB                 (2) 4M x 36                  None

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

          40MB                 (2) 1M x 36              (2) 4M x 36

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

          64MB                 (2) 8M x 36                  None

          64MB                 (2) 4M x 36              (2) 4M x 36

          72MB                 (2) 1M x 36              (2) 8M x 36

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

          96MB                 (2) 4M x 36              (2) 8M x 36

          128MB                (2) 8M x 36              (2) 8M x 36

  Note: Board accepts EDO memory. Board also accepts x 32 SIMMs. Banks
  are interchangeable.

                            CACHE CONFIGURATION

      Size               SL2                  SL3                TAG

     256KB           256KB module        Not installed       (1) 32K x 8
                      installed

     512KB           256KB module         256KB module       (1) 32K x 8
                      installed            installed

  Note: The location of the TAG is unidentified.

               CACHE JUMPER CONFIGURATION

            Size                        JP6

            None             Pins 1 & 3, 2 & 4 closed

           256KB             Pins 1 & 3, 2 & 4 closed

           512KB             Pins 3 & 5, 4 & 6 closed

                        VIDEO MEMORY CONFIGURATION

          Size                    Bank 0                   Bank 1

           1MB                     1MB                      None

           2MB                     1MB                      1MB

  Note: The location of bank 0 is unidentified. The size of the memory
  chips are unidentified.

                     CPU SPEED SELECTION

         CPU                Speed                 JP23

        CX M1                3/1           Pins 4 & 6 closed

        CX M1                2/1           Pins 2 & 4 closed

         P54                 3/2                  Open

         P54                 2/1           Pins 2 & 4 closed

        P54C                  -            Pins 1 & 3 closed

        P55C                  -            Pins 3 & 5 closed

       ASM M1                 -                   Open

         CPU MULTIPLIER SELECTION

     Multiplier              JP25

         2x           Pins 1 & 2 closed

        2.5x          Pins 2 & 3 closed

            CPU TYPE SELECTION

        Type                 JP9

        CX M1         Pins 2 & 3 closed

        P54C          Pins 1 & 2 closed

        P55C                 N/A

          CPU VOLTAGE SELECTION

       Voltage               JP21

        3.3v          Pins 2 & 3 closed

         5v           Pins 1 & 2 closed

