
AMERICAN MEGATRENDS, INC.

PEGASUS

Processor                Pentium II
Processor Speed          200/233/266/300MHz
Chip Set                 Unidentified
Video Chip Set           None
Maximum Onboard Memory   768MB (EDO supported)
Maximum Video Memory     None
Cache                    256/512KB (located on Pentium II 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), IR
                         connector, VRM connector, USB connectors (2), CPU
                         Slot 1
NPU Options              None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                 Location

  PS/2 mouse                J1         Power LED & keylock       J25
  interface

  Serial port 2             J2         Reset switch              J27

  Serial port 1             J3         Turbo LED                 J28

  Floppy drive              J4         Green PC connector        J30
  interface

  Chassis fan power         J5         IDE interface LED         J31

  CPU fan power             J6         Speaker                   J32

  Parallel port             J8         Chassis fan power         J33

  IDE interface 2           J9         IR connector              J34

  IDE interface 1           J11        32-bit PCI slots       PC1  PC4

  USB connector 2           J14        CPU Slot 1                SL1

  USB connector 1           J15        VRM connector             VRM

  Chassis door              J23
  intrusion connector

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J20          Unidentified
      alter

     Factory configured - do not           J24          Unidentified
      alter

     Factory configured - do not           J26          Unidentified
      alter

     CMOS memory normal operation          J29              Open

      CMOS memory clear                     J29             Closed

                    DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB       (2) 1M x 36        None          None

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

     16MB       (2) 2M x 36        None          None

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

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

     32MB       (2) 4M x 36        None          None

     32MB       (2) 2M x 36    (2) 2M x 36       None

     40MB       (2) 4M x 36    (2) 1M x 36       None

     48MB       (2) 4M x 36    (2) 2M x 36       None

     48MB       (2) 4M x 36    (2) 1M x 36    (2) 1M x 36

     56MB       (2) 4M x 36    (2) 2M x 36    (2) 1M x 36

     64MB       (2) 8M x 36        None          None

     64MB       (2) 4M x 36    (2) 4M x 36       None

     80MB       (2) 8M x 36    (2) 2M x 36       None

     80MB       (2) 8M x 36    (2) 1M x 36    (2) 1M x 36

     88MB       (2) 8M x 36    (2) 2M x 36    (2) 1M x 36

     96MB       (2) 8M x 36    (2) 4M x 36       None

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

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

                        DRAM CONFIGURATION (CONT)

       Size              Bank 0            Bank 1             Bank 2

       104MB          (2) 8M x 36        (2) 4M x 36       (2) 1M x 36

       112MB          (2) 8M x 36        (2) 4M x 36       (2) 2M x 36

       128MB          (2) 8M x 36        (2) 4M x 36       (2) 4M x 36

       128MB          (2) 16M x 36          None               None

       128MB          (2) 8M x 36        (2) 8M x 36           None

       136MB          (2) 8M x 36        (2) 8M x 36       (2) 1M x 36

       136MB          (2) 16M x 36       (2) 1M x 36           None

       144MB          (2) 16M x 36       (2) 2M x 36           None

       144MB          (2) 16M x 36       (2) 1M x 36       (2) 1M x 36

       160MB          (2) 16M x 36       (2) 4M x 36           None

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

       168MB          (2) 16M x 36       (2) 4M x 36       (2) 1M x 36

       176MB          (2) 16M x 36       (2) 4M x 36       (2) 2M x 36

       192MB          (2) 16M x 36       (2) 8M x 36           None

       192MB          (2) 16M x 36       (2) 4M x 36       (2) 4M x 36

       200MB          (2) 16M x 36       (2) 8M x 36       (2) 1M x 36

       208MB          (2) 16M x 36       (2) 8M x 36       (2) 2M x 36

       224MB          (2) 16M x 36       (2) 8M x 36       (2) 4M x 36

       256MB          (2) 16M x 36      (2) 16M x 36           None

       256MB          (2) 16M x 36       (2) 8M x 36       (2) 8M x 36

       256MB          (2) 32M x 36          None               None

       264MB          (2) 16M x 36      (2) 16M x 36       (2) 1M x 36

       272MB          (2) 16M x 36      (2) 16M x 36       (2) 2M x 36

       288MB          (2) 16M x 36      (2) 16M x 36       (2) 4M x 36

       320MB          (2) 16M x 36      (2) 16M x 36       (2) 8M x 36

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

       512MB          (2) 32M x 36      (2) 32M x 36           None

       520MB          (2) 32M x 36      (2) 32M x 36       (2) 1M x 36

       528MB          (2) 32M x 36      (2) 32M x 36       (2) 2M x 36

       544MB          (2) 32M x 36      (2) 32M x 36       (2) 4M x 36

       576MB          (2) 32M x 36      (2) 32M x 36       (2) 8M x 36

       640MB          (2) 32M x 36      (2) 32M x 36       (2) 16M x 36

       768MB          (2) 32M x 36      (2) 32M x 36       (2) 32M x 36

  Note: Board accepts EDO memory. Board also accepts x 32 SIMMs. Do not
  use 16M x 36 SIMMs that have more than 36 chips per SIMM.

                     CACHE CONFIGURATION

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

                            CPU SPEED SELECTION

  CPU speed     Clock      Multiplier       J16        J17         J18
                speed

   200MHz       66MHz          3x         Closed       Open      Closed

   233MHz       66MHz         3.5x        Closed       Open      Closed

   266MHz       66MHz          4x         Closed       Open      Closed

   300MHz       66MHz         4.5x        Closed       Open      Closed

                        CPU SPEED SELECTION (CONT)

  CPU speed      Clock       Multiplier       J19       J21        J22
                speed

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

   233MHz       66MHz           3.5x         Open      1 & 2     5 & 6, 7
                                                                   & 8

   266MHz       66MHz            4x          Open      1 & 2     1 & 2, 3
                                                                 & 4, 7 &
                                                                    8

   300MHz       66MHz           4.5x         Open      1 & 2     3 & 4, 7
                                                                   & 8

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

                Voltage                                J12

                   1.8v                  Pins 1 & 6, 2 & 7, 4 & 9 closed

                   1.85v                 Pins 1 & 6, 2 & 7, 4 & 9, 5 & 10
                                                     closed

                   1.9v                  Pins 1 & 6, 2 & 7, 3 & 8 closed

                   1.95v                 Pins 1 & 6, 2 & 7, 3 & 8, 5 & 10
                                                     closed

                   2.0v                  Pins 1 & 6, 2 & 7, 3 & 8, 4 & 9
                                                     closed

                   2.05v                 Pins 1 & 6, 2 & 7, 3 & 8, 4 & 9,
                                                  5 & 10 closed

                   2.1v                        Pins 5 & 10 closed

                   2.2v                         Pins 4 & 9 closed

                   2.3v                     Pins 4 & 9, 5 & 10 closed

                   2.4v                         Pins 3 & 8 closed

                   2.5v                     Pins 3 & 8, 5 & 10 closed

                   2.6v                     Pins 3 & 8, 4 & 9 closed

                   2.7v                 Pins 3 & 8, 4 & 9, 5 & 10 closed

                  2.8v                         Pins 2 & 7 closed

                   2.9v                     Pins 2 & 7, 5 & 10 closed

                   3.0v                     Pins 2 & 7, 4 & 9 closed

                   3.1v                 Pins 2 & 7, 4 & 9, 5 & 10 closed

                   3.2v                     Pins 2 & 7, 3 & 8 closed

                   3.3v                 Pins 2 & 7, 3 & 8, 5 & 10 closed

                   3.4v                  Pins 2 & 7, 3 & 8, 4 & 9 closed

                   3.5v                  Pins 2 & 7, 3 & 8, 4 & 9, 5 & 10
                                                     closed

