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

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 interface

CN4

IDE interface LED

W11

Serial port 2

CN5

Reset switch

W12

PS/2 mouse port

J13

32-bit VESA Local bus slots

J29 & J30

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

Factory configured - do not alter

W1

Closed

»

Monitor type select color

W2

Closed

 

Monitor type select monochrome

W2

Open

»

Mouse IRQ12 enabled

W3

Closed

 

Mouse IRQ12 disabled

W3

Open

»

Clear NVRAM disabled

W5

Open

 

Clear NVRAM enabled

W5

Closed

»

Factory configured - do not alter

W8

Pins 2 & 3 closed

»

Factory configured - do not alter

W10

Pins 2 & 3 closed

»

Factory configured - do not alter

W11

Pins 2 & 3 closed

»

Processor is Intel486 DX, DX2, DX4, Pentium or Pentium Pro

W12

Pins 1 & 2 closed

 

Processor is Intel486 SX

W12

Pins 2 & 3 closed

»

Factory configured - do not alter

W13

Open

»

Factory configured - do not alter

W16

Pins 2 & 3 closed

»

Factory configured - do not alter

W17

Pins 2 & 3 closed

»

Factory configured - do not alter

W18

Open

»

Factory configured - do not alter

W19

Closed

»

Factory configured - do not alter

W22

Pins 2 & 3 closed

»

Factory configured - do not alter

W23

Pins 2 & 3 closed

»

Factory configured - do not alter

W24

Pins 2 & 3 closed

»

Factory configured - do not alter

W25

Open

»

IDE port 1 enabled

W34

Pins 1 & 2 closed

 

IDE port 1 disabled

W34

Pins 2 & 3 closed

»

Factory configured - do not alter

W35

Open

»

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 alter

W39

Open

»

Factory configured - do not alter

W40

Open

»

Factory configured - do not alter

SW1/2

Closed

»

Factory configured - do not alter

SW1/3

Open

»

Factory configured - do not alter

SW1/4

Open

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 configured

Factory configured

Factory configured

66iMHz

Closed

Factory configured

Factory configured

Factory configured