ACER, INC.

V20L-486 ALL IN ONE

Processor  AM486SX/80486SX/AM486DX/80486DX/CX486DX2/AM486DX2/
           80486DX2/80486DX4/P24D/P24T
Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   ALI
Video Chip None
Set
Maximum    Unidentified
Onboard
Memory
Maximum    None
Video
Memory
Cache      128/256/512KB
BIOS       Unidentified
Dimensions 330mm x 218mm
I/O        32-bit VESA local bus slot, floppy drive interface, green PC
Options    connector, IDE interfaces (2), parallel port, PS/2 mouse port,
           serial ports (2)
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                 Location

  Serial port 2           CN1        Power LED &          CN9/pins 1 - 4
                                     keylock

  Serial port 1           CN2        Reset switch         CN9/pins 7 & 8

  Parallel port           CN3        Power LED &          CN10/pins 1 - 5
                                     keylock

  Floppy drive            CN4        Speaker               CN10/pins 7 -
  interface                                                     10

  IDE interface 1         CN5        Turbo LED             CN10/pins 12 &
                                                                13

  IDE interface 2         CN6        Turbo switch          CN10/pins 15 -
                                                                17

  PS/2 mouse port         CN7        Reset switch          CN10/pins 19 &
                                                                20

  IDE interface LED       CN8        32-bit VESA local          SL1
                                     bus slot

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Password disabled                     J1         Pins 2 & 3 closed

      Password enabled                      J1         Pins 1 & 2 closed

  »   Factory configured - do not           J2         Pins 2 & 3 closed
      alter (OEM BIOS enabled)

  »   M5115 I/O enabled                     J8         Pins 1 & 2 closed

      M5115 I/O disabled                    J8         Pins 2 & 3 closed

  »   Factory configured - do not           J10          Unidentified
      alter

  »   Local bus IDE I/O address             J11        Pins 1 & 2 closed
      select 0FXH

      Local bus IDE I/O address             J11        Pins 2 & 3 closed
      select 07XH

  »   Local bus IDE enabled                 J12        Pins 2 & 3 closed

      Local bus IDE disabled                J12        Pins 1 & 2 closed

  »   Factory configured - do not           J22          Unidentified
      alter

      Reset switch enabled                  J23        Pins 1 & 2 closed

      Reset switch disabled                 J23        Pins 2 & 3 closed

      Green PC connector enabled            J24        Pins 1 & 2 closed

      Green PC connector disabled           J24        Pins 2 & 3 closed

      Factory configured - do not           J41        Pins 2 & 3 closed
      alter

                   DRAM CONFIGURATION

  Note: The maximum amount of memory is unidentified.

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

     128KB        (4) 32K x 8        None        (1) 32K x 8

     256KB        (4) 32K x 8     (4) 32K x 8    (1) 32K x 8

     512KB       (4) 128K x 8        None        (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

      Size               J13               J15                 J16

      128KB           Pins 2 & 3        Pins 2 & 3      Pins 1 & 2 closed
                       closed             closed

      256KB           Pins 2 & 3        Pins 1 & 2      Pins 2 & 3 closed
                       closed             closed

      512KB           Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

                     CPU SPEED SELECTION

        Speed                JP17                 JP21

        25MHz          Pins 1 & 5 closed   Pins 2 & 3 closed

        33MHz          Pins 2 & 6 closed   Pins 2 & 3 closed

        40MHz          Pins 3 & 7 closed   Pins 1 & 2 closed

       50iMHz          Pins 1 & 5 closed   Pins 2 & 3 closed

        50MHz          Pins 4 & 8 closed   Pins 1 & 2 closed

       66iMHz          Pins 2 & 6 closed   Pins 2 & 3 closed

       75iMHz          Pins 1 & 5 closed   Pins 2 & 3 closed

       100iMHz         Pins 2 & 6 closed   Pins 2 & 3 closed

                            CPU TYPE SELECTION

    Type      J20      J26      J27       J33     J34      J35      J37

  AM486SX    1 & 2    1 & 2    1 & 2     1 & 3   2 & 3    2 & 3    2 & 3

  80486SX    1 & 2    2 & 3    2 & 3     1 & 3   2 & 3    2 & 3    2 & 3

  AM486DX    1 & 2    1 & 2    1 & 2     1 & 3   2 & 3    2 & 3    2 & 3

  80486DX    1 & 2    2 & 3    2 & 3     1 & 3   2 & 3    2 & 3    2 & 3

  CX486DX2   1 & 2    2 & 3     Open     2 & 4   1 & 2    2 & 3    1 & 2

  AM486DX2   1 & 2    1 & 2    1 & 2     1 & 3   2 & 3    2 & 3    2 & 3

  80486DX2   1 & 2    2 & 3    2 & 3     1 & 3   2 & 3    2 & 3    2 & 3

  80486DX4   1 & 2    2 & 3    2 & 3     1 & 3   2 & 3    2 & 3    2 & 3

    P24D     2 & 3    2 & 3    2 & 3     1 & 3   2 & 3    1 & 2    2 & 3

    P24T     2 & 3    2 & 3    2 & 3     1 & 3   2 & 3    1 & 2    2 & 3

  Note: Pins designated should be in the closed position.