DELL COMPUTER CORPORATION

SYSTEM 316, SYSTEM 320LX

Processor                  80386SX
Processor Speed            16/20MHz
Chip Set                   VLSI
Max. Onboard DRAM          8MB
SRAM Cache                 None
BIOS                       AMI
Dimensions                 355mm x 304mm
I/O Options                Diagnostic test port, floppy drive interface,
                           IDE interface

                           parallel port, serial port (2)
NPU Options                80387SX

[Image]

                                CONNECTIONS

  Purpose                   Location   Purpose                   Location

  External battery           BATT      Reset switch               JRES

  Serial port 1              COM1      External keyboard          KEYBD

  Serial port 2              COM2      Power LED & keylock        KLOCK

  Floppy drive interface      FDC      Parallel port              LPT1

  IDE interface               HDC      Speaker                    SPKR

  IDE interface LED          HDLED     Diagnostic test port       TEST

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

  »   IRQ14 select driven to bus              JMPHD          pins 1 & 2
                                                              closed

      IRQ14 select buffered                   JMPHD          pins 2 & 3
                                                              closed

  »   IOCHRDY signal disabled                 JMPRDY           open

      IOCHRDY signal from pin 21 enabled      JMPRDY         pins 1 & 2
                                                              closed

      IOCHRDY signal from pin 27 enabled      JMPRDY         pins 2 & 3
                                                              closed

  »   NPU mode select synchronous with        JMPNP            open
      CPU

      NPU mode select asynchronous with       JMPNP           closed
      CPU

  »   CMOS memory normal operation            MAINT            open

      CMOS memory clear                       MAINT           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) 256K x 9    (4) 1M x 9

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