
AMERICAN MEGATRENDS, INC.

MERLIN DP

Processor                Pentium Pro
Processor Speed          150/166/180/200MHz
Chip Set                 Intel
Video Chip Set           None
Maximum Onboard Memory   512MB (EDO supported)
Maximum Video Memory     None
Cache                    256/512KB (located on Pentium Pro CPU)
BIOS                     AMI
Dimensions               330mm x 218mm
I/O Options              32-bit PCI slots (4), floppy drive interface,
                         green PC connector, IDE interfaces (2), parallel
                         port, PS/2 mouse interface, serial ports (2), VRM
                         connectors (2), USB connectors (2)
NPU Options              None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Floppy drive interface      J1       USB connector 2            J14

  Parallel port               J2       Green PC connector         J29

  Chassis fan power           J3       Turbo LED                  J30

  Chassis fan power           J5       Reset switch               J32

  PS/2 mouse interface        J7       IDE interface LED          J34

  Serial port 1               J8       Speaker                    J35

  Serial port 2               J9       Power LED & keylock        J36

  IDE interface 2            J10       32-bit PCI slots         PC1 - PC4

  IDE interface 1            J12       VRM connector              VRM

  USB connector 1            J13       VRM connector              VRM

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J20          Unidentified
      alter

      PS/2 mouse IRQ12 enabled              J23        Pins 1 & 2 closed

      PS/2 mouse IRQ12 disabled             J23        Pins 2 & 3 closed

     Factory configured - do not           J31          Unidentified
      alter

     Factory configured - do not           J33          Unidentified
      alter

              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) 2M x 36    (2) 1M x 36

      32MB        (2) 4M x 36        None

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

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

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

      64MB        (2) 8M x 36        None

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

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

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

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

     128MB        (2) 16M x 36       None

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

     136MB        (2) 16M x 36   (2) 1M x 36

     144MB        (2) 16M x 36   (2) 2M x 36

     160MB        (2) 16M x 36   (2) 4M x 36

     192MB        (2) 16M x 36   (2) 8M x 36

     256MB        (2) 32M x 36       None

     256MB        (2) 16M x 36   (2) 16M x 36

                        DRAM CONFIGURATION (CON'T)

          Size                    Bank 0                   Bank 1

          264MB                (2) 32M x 36             (2) 1M x 36

          272MB                (2) 32M x 36             (2) 2M x 36

          288MB                (2) 32M x 36             (2) 4M x 36

          320MB                (2) 32M x 36             (2) 8M x 36

          384MB                (2) 32M x 36             (2) 16M x 36

          512MB                (2) 32M x 36             (2) 32M x 36

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

                      CACHE CONFIGURATION

  Note: 256KB/512KB cache is located on the Pentium Pro CPU.

                            CPU SPEED SELECTION

    CPU       Clock     Multiplier      J16       J17      J22      J26
   speed     speed

  150MHz     60MHz         2.5x        Open      Closed     1 &    3 & 4,
                                                            2      5 & 6,
                                                                   7 & 8

  166MHz     66MHz         2.5x       Closed      Open      1 &    3 & 4,
                                                            2      5 & 6,
                                                                   7 & 8

  180MHz     60MHz          3x         Open      Closed     1 &    1 & 2,
                                                            2      5 & 6,
                                                                   7 & 8

  200MHz     66MHz          3x        Closed      Open      1 &    1 & 2,
                                                            2      5 & 6,
                                                                   7 & 8

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

      Voltage                  J4                          J6

          None                Open                        Open

          2.1v          Pins 7 & 8 closed           Pins 7 & 8 closed

          2.2v          Pins 5 & 6 closed           Pins 5 & 6 closed

          2.3v       Pins 5 & 6, 7 & 8 closed   Pins 5 & 6, 7 & 8 closed

          2.4v          Pins 3 & 4 closed           Pins 3 & 4 closed

          2.5v       Pins 3 & 4, 5 & 6 closed   Pins 3 & 4, 5 & 6 closed

          2.6v       Pins 3 & 4, 5 & 6 closed   Pins 3 & 4, 5 & 6 closed

          2.7v       Pins 3 & 4, 5 & 6, 7 & 8    Pins 3 & 4, 5 & 6, 7 & 8
                             closed                      closed

          2.8v          Pins 1 & 2 closed           Pins 1 & 2 closed

          2.9v       Pins 1 & 2, 7 & 8 closed   Pins 1 & 2, 7 & 8 closed

          3.0v       Pins 1 & 2, 5 & 6 closed   Pins 1 & 2, 5 & 6 closed

          3.1v       Pins 1 & 2, 5 & 6, 7 & 8    Pins 1 & 2, 5 & 6, 7 & 8
                             closed                      closed

          3.2v       Pins 1 & 2, 3 & 4 closed   Pins 1 & 2, 3 & 4 closed

         3.3v       Pins 1 & 2, 3 & 4, 7 & 8    Pins 1 & 2, 3 & 4, 7 & 8
                             closed                      closed

          3.4v       Pins 1 & 2, 3 & 4, 5 & 6    Pins 1 & 2, 3 & 4, 5 & 6
                             closed                      closed

          3.5v        Pins 1 & 2, 3 & 4, 5 &    Pins 1 & 2, 3 & 4, 5 & 6,
                         6, 7 & 8 closed              7 & 8 closed

