COMPAQ COMPUTER CORPORATION

PRESARIO 700/900 SERIES

Processor

80486SX2/80486DX/80486DX2/80486DX4/Pentium Overdrive

Processor Speed

25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz

Chip Set

Compaq

Max. Onboard DRAM

100MB

Cache

128KB (on external cache card)

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

External cache card, game port, parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, line in port, line out port, microphone port, VGA port, CD-ROM line in, TV board line in

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

CN1

VGA port

CN10

Game port

CN2

Serial port 2

J2

Line in port

CN3

Video upgrade interface

J4 & J6

Line out port

CN4

CD-ROM line in

J10

Microphone port

CN5

External battery

J11

Speaker

CN6

TV board line in

J16

PS/2 mouse port

CN7

VGA feature connector

J20

Keyboard

CN8

External cache card

SL1

Serial port 1

CN9

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

J7

Open

»

Cache type select write through

P3

pins 1 & 2 closed

 

Cache type select write back

P3

pins 2 & 3 closed

»

CMOS memory normal operation

P5

Closed

 

CMOS memory clear

P5

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(8) 411000

NONE

NONE

NONE

8MB

(8) 411000

(1) 1M x 36

NONE

NONE

12MB

(8) 411000

(1) 1M x 36

(1) 1M x 36

NONE

12MB

(8) 411000

(1) 2M x 36

NONE

NONE

16MB

(8) 411000

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(8) 411000

(1) 1M x 36

(1) 2M x 36

NONE

16MB

(8) 411000

(1) 2M x 36

(1) 1M x 36

NONE

20MB

(8) 411000

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(8) 411000

(1) 2M x 36

(1) 2M x 36

NONE

20MB

(8) 411000

(1) 4M x 36

NONE

NONE

24MB

(8) 411000

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

24MB

(8) 411000

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(8) 411000

(1) 4M x 36

(1) 1M x 36

NONE

28MB

(8) 411000

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

28MB

(8) 411000

(1) 2M x 36

(1) 4M x 36

NONE

28MB

(8) 411000

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

28MB

(8) 411000

(1) 4M x 36

(1) 2M x 36

NONE

36MB

(8) 411000

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

36MB

(8) 411000

(1) 8M x 36

NONE

NONE

40MB

(8) 411000

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(8) 411000

(1) 1M x 36

(1) 8M x 36

NONE

40MB

(8) 411000

(1) 8M x 36

(1) 1M x 36

NONE

44MB

(8) 411000

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

44MB

(8) 411000

(1) 2M x 36

(1) 8M x 36

NONE

44MB

(8) 411000

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

44MB

(8) 411000

(1) 8M x 36

(1) 2M x 36

NONE

52MB

(8) 411000

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

52MB

(8) 411000

(1) 4M x 36

(1) 8M x 36

NONE

52MB

(8) 411000

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

52MB

(8) 411000

(1) 8M x 36

(1) 4M x 36

NONE

68MB

(8) 411000

(1) 4M x 36

(1) 4M x 36

NONE

68MB

(8) 411000

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

68MB

(8) 411000

(1) 8M x 36

(1) 8M x 36

NONE

72MB

(8) 411000

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

76MB

(8) 411000

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

84MB

(8) 411000

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

100MB

(8) 411000

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

Note: Bank 0 is factory installed 4MB and is not configurable.

CPU SPEED CONFIGURATION

Speed

P1

25MHz

pins 1 & 2 closed

33MHz

pins 2 & 3 closed

50iMHz

pins 1 & 2 closed

66iMHz

pins 2 & 3 closed

75iMHz

pins 1 & 2 closed

100iMHz

pins 2 & 3 closed

CPU CLOCK SPEED CONFIGURATION (80486DX4)

Speed

P4

2.0x

pins 2 & 3 closed

2.5x

pins 1 & 2 closed

3.0x

pins 3 & 4 closed