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

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 CPU

JMPNP

open

 

NPU mode select asynchronous with CPU

JMPNP

closed

»

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