Processor

80486DX

Processor Speed

33MHz

Chip Set

Compaq

Max. Onboard DRAM

32MB

Cache

None

BIOS

Compaq

Dimensions

330mm x 218mm

I/O Options

Bus mouse, floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

Serial port 2

CN4

Parallel port

CN2

PS/2 bus mouse

CN5

Serial port 1

CN3

Riser card

CN6

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select monochrome

P4

pins 1 & 2 closed

Monitor type select color

P4

pin 2 & 3 closed

»

VGA I/O address select 396H/399H

P5

pins 1 & 2 closed

VGA I/O address select 25EH/25FH

P5

Open

»

Wait states select 0

P6

pins 1 & 2 closed

Battery select external

P6

Open

»

EGA emulation enabled

P7

pins 1 & 2 closed

EGA emulation disabled

P7

pins 2 & 3 closed

»

Speaker select internal

P8

pins 1 & 2 closed

Speaker select external

P8

pins 2 & 3 closed

»

VGA port enabled

P50 & P51

pins 2 & 3 closed

VGA port disabled

P50 & P51

pins 1 & 2 closed

»

Battery select internal

P52

pins 2 & 3 closed

Battery select external

P52

pins 1 & 2 closed

»

CMOS memory normal operation

P52

pins 1 & 2 or 2 & 3

CMOS memory clear

P52

Open

Note:The location of jumpers on board are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

2MB

(1) 512K x 36

NONE

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

6MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

NONE

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 4M x 36

NONE

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

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

Note: The simplest memory configuration is shown to conserve space. In practice, any bank may be filled with any type of SIMM, as long as Bank 0 is filled first, Bank 1 second, etc. and the total memory is less than 32MB.