
ACER, INC.

AX65

Device Type              Mainboard
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                     Award
Dimensions               305mm x 244mm
I/O Options              32-bit PCI slots (5), floppy drive interface,
                         green PC connector, IDE interfaces (2), parallel
                         port, PS/2 mouse port, serial ports (2), IR
                         connector, USB interface, ATX power connector
NPU Options              None

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                Location

  ATX power                ATX        IDE interface LED        JP15
  connector

  Serial port 1            CN1        Soft off power      JP23/pins 1 & 2
                                      supply

  PS/2 mouse port          CN2        Power LED           JP23/pins 3 - 5

  Parallel port            CN4        Speaker              JP23/pins 7 -
                                                                10

  Serial port 2            CN5        Green PC LED         JP23/pins 12 &
                                                                13

  Chassis fan power        J1         Green PC             JP23/pins 15 -
                                      connector                 17

  Floppy drive             J4         Reset switch         JP23/pins 19 &
  interface                                                     20

  IDE interface 1          J5         32-bit PCI slots       PC1 - PC5

  IDE interface 2          J6         USB interface             USB

  IR connector            JP13

                        USER CONFIGURABLE SETTINGS

               Function                   Label            Position

     On board I/O enabled                 JP6        Pins 2 & 3 closed

      On board I/O disabled                JP6        Pins 1 & 2 closed

     Keyboard clock select ISA            JP7        Pins 2 & 3 closed
      clock

      Keyboard clock select 12MHz          JP7        Pins 1 & 2 closed

     PS/2 mouse enabled                   JP8        Pins 1 & 2 closed

      PS/2 mouse disabled                  JP8        Pins 2 & 3 closed

     Factory configured - do not          JP9           Unidentified
      alter

     CMOS memory normal operation         JP10       Pins 2 & 3 closed

      CMOS memory clear                    JP10       Pins 1 & 2 closed

      Power switch type select             JP14       Pins 2 & 3 closed
      toggle

      Power switch type select             JP14        Pins 1 & 2, 3 & 4
      momentary                                             closed

             SIMM 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) 4M x 36   (2) 2M 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

          SIMM CONFIGURATION (CON'T)

      Size          Bank 0          Bank 1

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

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

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

     128MB        (2) 16M x 36       None

     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) 16M x 36   (2) 16M x 36

     256MB        (2) 32M x 36       None

     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.

                     CACHE CONFIGURATION

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

                            CPU SPEED SELECTION

  CPU speed       Clock       Multiplier       JP3       JP4        JP5
                 speed

   150MHz        60MHz           2.5x         3 & 4    3 & 4, 5    3 & 4
                                                       & 6, 7 &
                                                          8

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

   180MHz        60MHz            3x          3 & 4    1 & 2, 3    3 & 4
                                                       & 4, 7 &
                                                          8

   200MHz        66MHz            3x          1 & 2    1 & 2, 3    1 & 2
                                                       & 4, 7 &
                                                          8

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

                Voltage                                 JP1

                Auto detect                           Open

                    2.1v                         Pins 1 & 2 closed

                    2.2v                         Pins 3 & 4 closed

                    2.3v                     Pins 1 & 2, 3 & 4 closed

                    2.4v                         Pins 5 & 6 closed

                    2.5v                     Pins 1 & 2, 5 & 6 closed

                    2.6v                     Pins 3 & 4, 5 & 6 closed

                    2.7v                  Pins 1 & 2, 3 & 4, 5 & 6 closed

                    2.8v                         Pins 7 & 8 closed

                    2.9v                     Pins 1 & 2, 7 & 8 closed

                    3.0v                     Pins 3 & 4, 7 & 8 closed

                    3.1v                  Pins 1 & 2, 3 & 4, 7 & 8 closed

                    3.2v                     Pins 5 & 6, 7 & 8 closed

                    3.3v                  Pins 1 & 2, 5 & 6, 7 & 8 closed

                    3.4v                  Pins 3 & 4, 5 & 6, 7 & 8 closed

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

                           FLASH BIOS SELECTION

           Setting                    JP11                   JP12

            Enabled            Pins 1 & 2 closed      Pins 1 & 2 closed

             Disabled           Pins 2 & 3 closed      Pins 2 & 3 closed

