ACER, INC.

PI1

Processor                  CX M1/Pentium
Processor Speed            75/90/100MHz
Chip Set                   Unidentified
Video Chip Set             Cirrus Logic
Maximum Onboard Memory     128MB
Maximum Video Memory       2MB
Cache                      256KB
BIOS                       Unidentified
Dimensions                 330mm x 218mm
I/O Options                Floppy drive interface, green PC connector, IDE
                           interfaces (2), parallel port, PS/2 mouse port,
                           serial ports (2), feature connector, VGA port,
                           riser slot
NPU Options                None

[Image]

                                CONNECTIONS

  Purpose              Location     Purpose                    Location

  Feature connector      CN1        IDE interface 1              CN9

  PS/2 mouse port        CN2        Front panel LEDs              J1

  Serial port 1          CN3        Front panel LEDs              J2

  Serial port 2          CN4        IDE interface LED             J3

  Parallel port          CN5        IDE interface LED             J4

  VGA port               CN6        Green PC                     JP15
                                    connector/reset switch

  Floppy drive           CN7        Riser slot                   SL1
  interface

  IDE interface 2        CN8

                        USER CONFIGURABLE SETTINGS

                Function
                                             Label
                                                             Position

  »
      BIOS type select OEM BIOS
      installed
                                              JP1
                                                            Pins 2 & 3
                                                              closed


      BIOS type select RESERVED BIOS
                                              JP1
                                                            Pins 1 & 2
                                                              closed

  »
      Password disabled
                                              JP2
                                                            Pins 2 & 3
                                                              closed


      Password enabled
                                              JP2
                                                            Pins 1 & 2
                                                              closed

  »
      BIOS type select flash BIOS
                                              JP3
                                                            Pins 1 & 2
                                                              closed


      BIOS type select EPROM
                                              JP3
                                                            Pins 2 & 3
                                                              closed

  »
      On board SMC665 enabled
                                              JP6
                                                            Pins 2 & 3
                                                              closed


      On board SMC665 disabled
                                              JP6
                                                            Pins 1 & 2
                                                              closed

  »
      On board GD5434 enabled
                                              JP7
                                                            Pins 2 & 3
                                                              closed


      On board GD5434 disabled
                                              JP7
                                                            Pins 1 & 2
                                                              closed

  »
      IDE interface enabled
                                              JP9
                                                            Pins 2 & 3
                                                              closed


      IDE interface disabled
                                              JP9
                                                            Pins 1 & 2
                                                              closed

  »
      ADS# not delayed
                                              JP11
                                                            Pins 1 & 2
                                                              closed


      ADS# delayed by one CPU clock
                                              JP11
                                                            Pins 2 & 3
                                                              closed

  »
      Reset switch used as reset switch
                                              JP15
                                                            Pins 2 & 3
                                                              closed


      Reset switch used as green PC
      connector
                                              JP15
                                                            Pins 1 & 2
                                                              closed

             DRAM CONFIGURATION

     Size          Bank 0        Bank 1

      8MB        (2) 1M x 36      None

     16MB           None       (2) 2M x 36

     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

         DRAM CONFIGURATION (CON'T)

     Size
                   Bank 0
                                 Bank 1

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

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

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

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

  Note: Banks are interchangeable.

                        CACHE CONFIGURATION

  Note: 256KB cache is factory installed and is not configurable.

                  VIDEO MEMORY CONFIGURATION

        Size
                            Bank 0
                                                 Bank 1

         1MB
                             1MB
                                                  None

         2MB
                             1MB
                                             (2) 256K x 16

  Note: Bank 0 is factory installed and is not configurable.

                     CPU SPEED SELECTION

      CPU speed          Clock speed              JP8

        75MHz               50MHz          Pins 1 & 4 closed

        90MHz               60MHz          Pins 2 & 5 closed

       100MHz               66MHz          Pins 3 & 6 closed

            CPU TYPE SELECTION

        Type
                             JP12

        Cyrix
                      Pins 2 & 3 closed

        Intel
                      Pins 1 & 2 closed

          CPU VOLTAGE SELECTION

       Voltage               JP13

       3.3825v        Pins 1 & 2 closed

       3.5250v        Pins 2 & 3 closed

      CPU CORE CLOCK RATIO SELECTION

        Ratio
                             JP14

         3/2
                      Pins 1 & 2 closed

         2x
                      Pins 2 & 3 closed

                           DMA CHANNEL SELECTION

         Channel                    JP4                      JP5

  »           1              Pins 1 & 2 closed        Pins 1 & 2 closed

              3              Pins 2 & 3 closed        Pins 2 & 3 closed