ELITEGROUP COMPUTER SYSTEMS, INC.

AC 486 PQFP

Processor              80486SX/80487SX/80486DX/80486DX2
Processor Speed        16/20/25/33/50(internal)/66(internal)MHz
Chip Set               ACC
Video Chip Set         None
Maximum Onboard Memory 32MB
Maximum Video Memory   None
Cache                  None
BIOS                   AMI
Dimensions             254mm x 218mm
I/O Options            None
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery            J1       Reset switch                J4

  Turbo LED                   J2       Speaker                     J5

  Turbo switch                J3       Power LED & keylock         J6

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

      Monitor type select color               JP2           Pins 2 & 3
                                                              closed

      Monitor type select monochrome          JP2           Pins 1 & 2
                                                              closed

      PQFP CPU disabled                       JP3             Closed

      PQFP CPU enabled                        JP3              Open

              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

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

      16MB        (4) 4M x 9         None

      20MB        (4) 1M x 9      (4) 4M x 9

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

           CPU SPEED SELECTION

  Speed      JP6        JP7       JP8

  16MHz     Closed    Closed    Closed

  20MHz      Open     Closed    Closed

  25MHz     Closed     Open     Closed

  33MHz     Closed    Closed     Open

  50iMHz    Closed     Open     Closed

  66iMHz    Closed    Closed     Open

                            CPU TYPE SELECTION

          Type                     JP4                      JP5

         80486SX            Pins 2 & 3 closed        Pins 2 & 3 closed

         80487SX             Pins 1 & 2, 3 & 4       Pins 1 & 2 closed
                                  closed

         80486DX             Pins 1 & 2, 3 & 4       Pins 3 & 4 closed
                                  closed

        80486DX2             Pins 1 & 2, 3 & 4       Pins 3 & 4 closed
                                  closed