
DELL COMPUTER CORPORATION

System 220e

Processor               80286
Processor Speed         20MHz
Chip Set                VLSI
Max. Onboard DRAM       8MB
Cache                   None
BIOS                    Phoenix
Dimensions              362mm x 182mm
I/O Options             Floppy drive interface, IDE interface, parallel
                        port, riser card slot, serial ports (2), VGA port
NPU Options             80287

[Image]

                                CONNECTIONS

  Purpose              Location    Purpose                    Location

  VGA port               CN1       Floppy drive                 FDD
                                   interface

  Parallel port          CN2       IDE interface                IDE

  Serial port 2          CN3       VGA pass-through            JFEAT

  Serial port 1          CN4       Power LED & keylock           P6

  16-bit riser card      EXP       Reset switch                 W12

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Monitor type select color                W1             Closed

      Monitor type select monochrome           W1              Open

     Factory test disabled                    W2              Open

      Factory test enabled                     W2             Closed

     Factory configured - do not alter        W3              Open

     Factory configured - do not alter        W4              Open

     Serial port 2 enabled (IRQ4)        W5 pins 1 & 2       Closed

      Serial port 2 disabled (IRQ4 not    W5 pins 1 & 2        Open
      used)

     Serial port 1 enabled (IRQ3)        W5 pins 3 & 4       Closed

      Serial port 1 disabled (IRQ3 not    W5 pins 3 & 4        Open
      used)

     Factory configured - do not alter   W5 pins 5 & 6        Open
      (IRQ5 not used)

     Parallel port enabled (IRQ7)        W5 pins 7 & 8       Closed

      Parallel port disabled (IRQ7 not    W5 pins 7 & 8        Open
      used)

     IDE interface enabled                    W6             Closed

      IDE interface disabled                   W6              Open

     Floppy interface enabled                 W7             Closed

      Floppy interface disabled                W7              Open

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

     IDE drive installed select 1:1           W9            pins 1 & 2
      interleave "Type B"                                     closed

      IDE drive installed select 3:1           W9            pins 2 & 3
      interleave "Type A"                                     closed

     VGA port enabled                         W10           pins 1 & 2
                                                              closed

      VGA port disabled                        W10           pins 2 & 3
                                                              closed

     Tri-state diagnostic signal              W11           pins 2 & 3
      indicates true drive state                              closed

      Tri-state diagnostic signal              W11           pins 1 & 2
      forced to "passed diagnostic"                           closed

     Factory configured - do not alter        W13           pins 1 & 2
                                                              closed

     BIOS type select 27256                   W14           pins 2 & 3
                                                              closed

      BIOS type select 27512                   W14           pins 1 & 2
                                                              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) 1M x 9     (4) 256K x 9

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

                         DRAM JUMPER CONFIGURATION

                Type                         W15               W16

  Memory recognized by system select      pins 1 & 2        pins 2 & 3
  total amount installed                   closed             closed

  Memory recognized by system select      pins 2 & 3        pins 1 & 2
  only 256KB                               closed             closed

