PACKARD BELL

PB55 SERIES/F820 SERIES SX

(LEGEND 520SX)

Processor

80386SX

Processor Speed

20MHz

Chip Set

TI

Max. Onboard DRAM

16MB

Cache

16/32KB

BIOS

Phoenix

Dimensions

330mm x 218mm

I/O Options

Parallel port, serial ports (2), ps/2 mouse port, vga interface, floppy drive interface, IDE interface

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

Keyboard

J1

Speaker

JP16

PS/2 mouse port

J2

Reset switch

JP50 pin 1

Serial port 2

J3

Turbo switch

JP50 pin 2

Serial port 1

J4

Power ready

JP50 pin 3

Parallel port

J5

IDE LED

JP50 pin 4

VGA interface

J6

Turbo LED

JP50 pin 5

Floppy interface

J10

Ground

JP50 pin 6

IDE interface

J11

Keylock

JP51

External battery

JP1

Riser card

S1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

JP2

N/A

»

Monitor type select color

JP3

Closed

 

Monitor type select monochrome

JP3

Open

»

Factory configured - do not alter

JP4

N/A

»

PS/2 mouse enabled

JP5

Closed

 

PS/2 mouse disabled

JP5

Open

»

800 x 600 display frequency select 60Hz V/37.8KHz H

JP7

Closed

 

800 x 600 display frequency select 56Hz V/35.2KHz H

JP7

Open

»

Monitor timing select multi-sync one

JP8

Closed

 

Monitor timing select PS/2 and others

JP8

Open

»

Video BIOS select PS/2 VGA mode

JP9

Closed

 

Video BIOS select AT VGA mode

JP9

Open

»

Factory configured - do not alter

JP10

N/A

»

Factory configured - do not alter

JP11

N/A

»

VGA interface enabled

JP12

Closed

 

VGA interface disabled

JP12

Open

»

CMOS memory normal operation

JP14

Open

 

CMOS memory clear

JP14

Closed

»

Speaker select internal

JP15

pins 1 & 2 closed

 

Speaker select external

JP15

pins 2 & 3 closed

»

Factory configured - do not alter

JP18

N/A

»

Printer port type select Centronics

JP30

Closed

 

Printer port type select PS/2 (bi-directional)

JP30

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

2.5MB

(2) 256K x 9

(2) 1M x 9

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

8.5MB

(2) 256K x 9

(2) 4M x 9

10MB

(2) 1M x 9

(2) 4M x 9

16MB

(2) 4M x 9

(2) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

16KB

(2) 8K x 8

NONE

32KB

(2) 8K x 8

(2) 8K x 8

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