IBM CORPORATION

APTIVA 2144 TYPE C-1, APTIVA 2168 TYPE C-1

Device Type     Mainboard
Processor       80486SX/80486SX2/80487SX/ODP486/80486DX/80486DX2
Processor Speed 25/33/50(internal)/66(internal)MHz
Chip Set        Unidentified
Video Chip Set  Unidentified
Maximum Onboard 64MB
Memory
Maximum Video   1MB
Memory
Cache           None
BIOS            Unidentified
Dimensions      330mm x 218mm
I/O Options     Floppy drive interface, IDE interfaces (2), parallel port,
                PS/2 mouse port, serial ports (2), riser slot, VGA feature
                connector
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  PS/2 mouse port             J2       VGA feature connector       J14

  Serial port 1               J3       IDE interface LED           J26

  Serial port 2               J4       Speaker                     J27

  Parallel port               J5       Soft off power supply       J29

  VGA port                    J6       Soft off power supply       J30

  Floppy drive interface      J7       Chassis fan power           J38

  IDE interface 1             J9       Wake on modem               JP5
                                       connector

  IDE interface 2             J10      Riser slot                  SL1

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   On board video disabled                 J15           Pins 1 & 2
                                                              closed

      On board video enabled                  J15           Pins 2 & 3
                                                              closed

      Parity enabled                          J50           Pins 1 & 2
                                                              closed

      Parity disabled                         J50           Pins 2 & 3
                                                              closed

  »   Password normal operation               JP14          Pins 1 & 2
                                                              closed

      Password clear                          JP14          Pins 2 & 3
                                                              closed

                SIMM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (1) 256K x 36         None

       2MB        (1) 512K x 36         None

       2MB        (1) 256K x 36    (1) 256K x 36

       3MB        (1) 512K x 36    (1) 256K x 36

       4MB         (1) 1M x 36          None

       4MB        (1) 512K x 36    (1) 512K x 36

       5MB         (1) 1M x 36     (1) 256K x 36

       6MB        (1) 512K x 36     (1) 1M x 36

       8MB         (1) 2M x 36          None

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

       9MB         (1) 2M x 36     (1) 256K x 36

      10MB         (1) 2M x 36     (1) 512K x 36

      12MB         (1) 2M x 36      (1) 1M x 36

      16MB         (1) 4M x 36          None

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

      17MB        (1) 256K x 36     (1) 4M x 36

            SIMM CONFIGURATION (CON’T)

      Size            Bank 0           Bank 1

      18MB        (1) 512K x 36     (1) 4M x 36

      20MB         (1) 4M x 36      (1) 1M x 36

      24MB         (1) 4M x 36      (1) 2M x 36

      32MB         (1) 8M x 36          None

      32MB         (1) 4M x 36      (1) 4M x 36

      33MB         (1) 8M x 36     (1) 256K x 36

      34MB         (1) 8M x 36     (1) 512K x 36

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

      40MB         (1) 8M x 36      (1) 2M x 36

      48MB         (1) 8M x 36      (1) 4M x 36

      64MB         (1) 8M x 36      (1) 8M x 36

                        VIDEO MEMORY CONFIGURATION

  Note: Board is factory installed with either 512KB or 1MB video memory.

  CPU SPEED SELECTION

   Speed        J37

   25MHz       Closed

   33MHz        Open

   50iMHz      Closed

   66iMHz       Open

                            CPU TYPE SELECTION

       Type               J24                J25               J31

      80486SX          Pins 2 & 3         Pins 2 & 3        Pins 1 & 2
                         closed            closed             closed

      80486SX          Pins 2 & 3         Pins 1 & 2        Pins 2 & 3
                         closed            closed             closed

      80487SX          Pins 1 & 2         Pins 1 & 2        Pins 2 & 3
                         closed            closed             closed

      ODP486           Pins 1 & 2         Pins 1 & 2        Pins 2 & 3
                         closed            closed             closed

      80486DX          Pins 2 & 3         Pins 1 & 2        Pins 2 & 3
                         closed            closed             closed

     80486DX2          Pins 2 & 3         Pins 1 & 2        Pins 2 & 3
                         closed            closed             closed

  Note: The settings for the 80486SX2 are unidentified.