
ACER, INC.

IP25AB

Processor              80486SX/80486DX
Processor Speed        20/25/33MHz
Chip Set               ALI
Video Chip Set         None
Maximum Onboard Memory 32MB
Maximum Video Memory   None
Cache                  None
BIOS                   Acer
Dimensions             220mm x 170mm
I/O Options            None
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                Location

  Power LED &        CN1 pins 1 - 5   Turbo switch         CN1 pins 15 -
  keylock                                                       17

  Speaker             CN1 pins 7 -    Reset switch         CN1 pins 19 &
                           10                                   20

  Turbo LED           CN1 pins 12 &   External battery          J3
                           13

  Note: If system has a 12-pin connector, make sure red wire is connected
  to pin 11.

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP1              Open

      CMOS memory clear                       JP1             Closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       None

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         None

      5MB         (4) 256K x 9    (4) 1M x 9

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         None

      32MB        (4) 4M x 9      (4) 4M x 9

                            CPU SPEED SELECTION

     Speed             JP2                 JP3                 JP4

     20MHz          Pins 2 & 3          Pins 1 & 2      Pins 1 & 2, 3 & 4
                      closed             closed              closed

     25MHz          Pins 1 & 2          Pins 2 & 3      Pins 3 & 4 closed
                      closed             closed

     33MHz          Pins 1 & 2          Pins 1 & 2      Pins 1 & 2 closed
                      closed             closed

