
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

