
DELL COMPUTER CORPORATION

DIMENSION XPS XXX

Processor          80486DX2/80486DX4
Processor Speed    50(internal)/66(internal)MHz
Chip Set           MIC
Max. Onboard DRAM  64MB
Cache              128/256KB
BIOS               Unidentified
Dimensions         330mm x 218mm
I/O Options        32-bit VESA local bus slots (2), floppy drive
                   interface, IDE interface (2), parallel port, PS/2 mouse
                   port, serial ports (2)
NPU Options        None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port 1              CN1       Parallel port              J16

  IDE interface 1            CN2       Speaker                    J33

  IDE interface 2            CN3       Power LED & keylock        J34

  Floppy drive               CN4       IDE interface LED          W11
  interface

  Serial port 2              CN5       Reset switch               W12

  PS/2 mouse port            J13       32-bit VESA Local bus   J29 & J30
                                       slots

                        USER CONFIGURABLE SETTINGS

              Function                  Jumper/Switch        Position

     Factory configured - do not            W1               Closed
      alter

     Monitor type select color              W2               Closed

      Monitor type select                    W2                Open
      monochrome

     Mouse IRQ12 enabled                    W3               Closed

      Mouse IRQ12 disabled                   W3                Open

     Clear NVRAM disabled                   W5                Open

      Clear NVRAM enabled                    W5               Closed

     Factory configured - do not            W8              Pins 2 & 3
      alter                                                   closed

     Factory configured - do not            W10             Pins 2 & 3
      alter                                                   closed

     Factory configured - do not            W11             Pins 2 & 3
      alter                                                   closed

     Processor is Intel486 DX,              W12             Pins 1 & 2
      DX2, DX4, Pentium or Pentium                            closed
      Pro

      Processor is Intel486 SX               W12             Pins 2 & 3
                                                              closed

     Factory configured - do not            W13               Open
      alter

     Factory configured - do not            W16             Pins 2 & 3
      alter                                                   closed

     Factory configured - do not            W17             Pins 2 & 3
      alter                                                   closed

     Factory configured - do not            W18               Open
      alter

     Factory configured - do not            W19              Closed
      alter

     Factory configured - do not            W22             Pins 2 & 3
      alter                                                   closed

     Factory configured - do not            W23             Pins 2 & 3
      alter                                                   closed

     Factory configured - do not            W24             Pins 2 & 3
      alter                                                   closed

     Factory configured - do not            W25               Open
      alter

     IDE port 1 enabled                     W34             Pins 1 & 2
                                                              closed

      IDE port 1 disabled                    W34             Pins 2 & 3
                                                              closed

     Factory configured - do not            W35               Open
      alter

     Parallel port IRQ = 7                  W36             Pins 1 & 2
                                                              closed

      Parallel port IRQ = 5                  W36             Pins 2 & 3
                                                              closed

     ECP DMA = 3                            W37             Pins 2 & 3
                                                              closed

      ECP DMA = 1                            W37             Pins 1 & 2
                                                              closed

     ECP DMA = 3                            W38             Pins 2 & 3
                                                              closed

      ECP DMA = 1                            W38             Pins 1 & 2
                                                              closed

     Factory configured - do not            W39               Open
      alter

     Factory configured - do not            W40               Open
      alter

     Factory configured - do not           SW1/2             Closed
      alter

     Factory configured - do not           SW1/3              Open
      alter

     Factory configured - do not           SW1/4              Open
      alter

  Note: The locations of the factory confugured jumpers is unidentified.

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

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

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

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

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

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

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

     128KB      (4) 32K x 8        NONE       (2) 16K x 8

     256KB      (4) 32K x 8    (4) 32K x 8    (2) 16K x 8

                          CPU SPEED CONFIGURATION

   Speed       SW1/1         SW1/2            SW1/3            SW1/4

   50iMHz      Open          Factory         Factory           Factory
                           configured      configured        configured

   66iMHz     Closed         Factory         Factory           Factory
                           configured      configured        configured

