IBM CORPORATION

APTIVA 2156 SL-A

Device Type                Mainboard
Processor                  Pentium MMX
Processor Speed            300MHz
Chip Set                   Unidentified
Video Chip Set             SIS
Maximum Onboard Memory     256MB (SDRAM supported)
Maximum Video Memory       Unidentified
Cache                      512KB
BIOS                       Unidentified
Dimensions                 355mm x 304mm
I/O Options                Floppy drive interface, game interface, IDE
                           interfaces (2), parallel port, PS/2 mouse port,
                           serial ports (2), VGA port, riser slot, USB
                           connector, ATX power connector, line in, line
                           out, microphone in, audio in – CD-ROM

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  ATX power                ATX         Audio in – CD-ROM        J18
  connector

  USB connector             J1         Line out                 J19

  VGA port                  J4         Line in                  J20

  Buzzer                    J5         Microphone in            J21

  IDE interface 1           J6         Game interface           J22

  IDE interface 2           J7         Speaker                  J23

  Parallel port             J9         Speaker                  J25

  PS/2 mouse port          J11         Soft off power      JP7/pins 1 & 3
                                       supply

  Serial port 1            J12         ACP LED             JP7/pins 2/4/6

  Floppy drive             J14         IDE interface LED   JP7/pins 5 & 7
  interface

  Chassis fan power        J17         Riser slot               SL1

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

  »   CMOS memory normal operation            JP3           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP3           Pins 2 & 3
                                                              closed

               DIMM CONFIGURATION

      Size          Bank 0          Bank 1

      8MB         (1) 1M x 64        None

      16MB        (1) 2M x 64        None

      16MB        (1) 1M x 64     (1) 1M x 64

      24MB        (1) 2M x 64     (1) 1M x 64

      32MB        (1) 4M x 64        None

      32MB        (1) 2M x 64     (1) 2M x 64

      40MB        (1) 4M x 64     (1) 1M x 64

      48MB        (1) 4M x 64     (1) 2M x 64

      64MB        (1) 8M x 64        None

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

      72MB        (1) 8M x 64     (1) 1M x 64

      80MB        (1) 8M x 64     (1) 2M x 64

      96MB        (1) 8M x 64     (1) 4M x 64

     128MB       (1) 16M x 64        None

     128MB        (1) 8M x 64     (1) 8M x 64

     136MB       (1) 16M x 64     (1) 1M x 64

     144MB       (1) 16M x 64     (1) 2M x 64

     160MB       (1) 16M x 64     (1) 4M x 64

     192MB       (1) 16M x 64     (1) 8M x 64

     256MB       (1) 16M x 64    (1) 16M x 64

            Note: Board accepts SDRAM memory.

      CACHE CONFIGURATION

      Size          Bank 0

     512KB       (2) 64K x 32

                 VIDEO MEMORY CONFIGURATION

  Note: The location of the video memory is unidentified.

                CPU BUS SPEED SELECTION

           Speed                        JP6

           60MHz             Pins 1 & 3, 4 & 6 closed

           66MHz             Pins 1 & 3, 2 & 4 closed

           75MHz             Pins 2 & 4, 3 & 5 closed

                         CPU MULTIPLIER SELECTION

        Multiplier                   JP1                     JP2

            2x                Pins 1 & 2 closed       Pins 1 & 3, 4 & 6
                                                           closed

           2.5x               Pins 1 & 2 closed       Pins 1 & 3, 2 & 4
                                                           closed

            3x                Pins 1 & 2 closed       Pins 2 & 4, 3 & 5
                                                           closed

           3.5x               Pins 1 & 2 closed       Pins 3 & 5, 4 & 6
                                                           closed

            4x                Pins 2 & 3 closed       Pins 1 & 3, 2 & 4
                                                           closed

           4.5x               Pins 2 & 3 closed       Pins 1 & 3, 2 & 4
                                                           closed

            5x                Pins 2 & 3 closed       Pins 2 & 4, 3 & 5
                                                           closed

           5.5x               Pins 2 & 3 closed       Pins 3 & 5, 4 & 6
                                                           closed

                           CPU VOLTAGE SELECTION

         Voltage                   JP4                      JP5

          1.94               Pins 3 & 5, 4 & 6        Pins 2 & 4, 3 & 5
                                  closed                   closed

          2.24               Pins 2 & 4, 3 & 5        Pins 1 & 3, 2 & 4
                                  closed                   closed

          2.84               Pins 1 & 3, 2 & 4        Pins 1 & 3, 2 & 4
                                  closed                   closed

          2.94               Pins 1 & 3, 2 & 4        Pins 1 & 3, 4 & 6
                                  closed                   closed

          3.24               Pins 1 & 3, 2 & 4        Pins 2 & 4, 3 & 5
                                  closed                   closed