
DELL COMPUTER CORPORATION

V486DX/XX, XXS REV. 2

Processor         80486SX/80487SX/80486DX/80486DX2
Processor Speed   25/33/50(internal)MHz
Chip Set          OPTI
Max. Onboard DRAM 64MB
Cache             64/256KB
BIOS              AMI
Dimensions        330mm x 218mm
NPU options       None

[Image]

                                CONNECTIONS

  Purpose                    Location   Purpose                  Location

  External battery             J1       Serial port 1              J10

  Unidentified                 J2       Turbo LED                  J23

  Unidentified                 J3       Reset switch               J24

  IDE interface                J5       Power LED & keylock        J25

  Floppy drive interface       J6       Speaker                    J26

  Parallel port                J8       VGA interface              J27

  Serial port 2                J9

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                W1           pins 1 & 2
                                                              closed

      Monitor type select monochrome           W1           pins 2 & 3
                                                              closed

     CMOS memory normal operation             W2           pins 1 & 2
                                                              closed

      CMOS memory clear                        W2           pins 2 & 3
                                                              closed

     Factory configured - do not              W3           pins 2 & 3
      alter                                                   closed

     Onboard VGA enabled                     W10           pins 1 & 2
                                                              closed

      Onboard VGA disabled                    W10           pins 2 & 3
                                                              closed

                           DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2        Bank 3

     4MB        (1) 1M x 36       NONE           NONE          NONE

     8MB        (1) 1M x 36   (1) 1M x 36        NONE          NONE

     12MB       (1) 1M x 36   (1) 1M x 36    (1) 1M x 36       NONE

     16MB       (1) 1M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     16MB       (1) 4M x 36       NONE           NONE          NONE

     20MB       (1) 4M x 36   (1) 1M x 36        NONE          NONE

     24MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36       NONE

     28MB       (1) 4M x 36   (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     32MB       (1) 4M x 36   (1) 4M x 36        NONE          NONE

     36MB       (1) 4M x 36   (1) 4M x 36    (1) 1M x 36       NONE

     40MB       (1) 4M x 36   (1) 4M x 36    (1) 1M x 36    (1) 1M x 36

     48MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36       NONE

     52MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36    (1) 1M x 36

     64MB       (1) 4M x 36   (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     CACHE CONFIGURATION

     Size          Bank 0

     64KB       (8) 16K x 4

     256KB      (8) 32K x 8

                        CACHE JUMPER CONFIGURATION

      Size               W4                 W5                 W9

       0KB              Open               Open               Open

      64KB            pins 2 & 3        pins 2 & 3      pins 2 & 3 closed
                       closed             closed

      256KB           pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

                           CPU FREQUENCY SELECT

     CPU type              W6                W7                 W8

      80486SX          pins 2 & 3         pins 2 & 3           Open
                         closed            closed

      80487SX          pins 1 & 2         pins 1 & 2        pins 1 & 2
                         closed            closed             closed

      80486DX          pins 1 & 2         pins 1 & 2        pins 2 & 3
                         closed            closed             closed

     80486DX2          pins 1 & 2         pins 1 & 2        pins 2 & 3
                         closed            closed             closed

                   VIDEO RAM CONFIGURATION

        Size               Bank 0               Bank 1

       512KB            (4) 256KB x 4            NONE

        1MB             (4) 256KB x 4       (4) 256KB x 4

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

  VIDEO RAM JUMPER CONFIGURATION

      Size             SW1/6

      512KB              On

       1MB              Off

  MONITOR REFRESH RATE (800 X 600)

    Rate       SW1/1        SW1/2

    56Hz        Off          Off

    60Hz        Off          On

    72Hz         On          Off

    56Hz         On          On

                   MONITOR REFRESH RATE (1024 X 768)

          Rate                   SW1/3                   SW1/4

       Interlaced                 Off                     Off

  60Hz (noninterlaced)            Off                     On

  70Hz (noninterlaced)            On                      Off

  72Hz (noninterlaced)            On                      On

                            STANDARD VGA MODES

                 Mode                                 SW1/5

   40Hz horizontal, 75/80Hz vertical                   On

  31.5Hz horizontal, 60/70Hz vertical                  Off

