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PB450, LEGEND-CD 486SX

PACKARD BELL

PB450, LEGEND-CD 486SX

Processor

80486SX/SL80486SX/80486DX/SL80486DX/80486DX2/SL80486DX2/80486DX4/P24T

Processor Speed

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

Chip Set

OPTI

Video Chip Set

Cirrus Logic

Maximum Onboard Memory

64MB

Maximum Video Memory

2MB

Cache

128/512KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VESA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

J2

IDE interface 1

J24

VGA port

J3

External battery

J30

Parallel port

J5

Front panel connector

J34

Serial port 1

J6

Power LED & keylock

J35

VESA feature connector

J14

Speaker

J36

Floppy drive interface

J21

Chassis fan power

J38

Serial port 2/modem connector

J22

Riser slot

SL1

IDE interface 2

J23

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Monitor type select color

J8

Closed

 

Monitor type select monochrome

J8

Open

Video IRQ9 disabled

J9

Open

 

Video IRQ9 enabled

J9

Closed

Factory configured - do not alter

J10

Unidentified

Factory configured - do not alter

J11

Unidentified

Flash BIOS normal operation

J17

Pins 2 & 3 closed

 

Flash BIOS boot block enabled

J17

Pins 1 & 2 closed

DRAM parity disabled

J18

Pins 2 & 3 closed

 

DRAM parity enabled

J18

Pins 1 & 2 closed

On board video enabled

J19

Pins 2 & 3 closed

 

On board video disabled

J19

Pins 1 & 2 closed

On board I/O enabled

J20

Pins 2 & 3 closed

 

On board I/O disabled

J20

Pins 1 & 2 closed

 

Battery type select internal

J30

Pins 3 & 4 closed

 

Battery type select external

J30

Closed

LDEV# bypass enabled

J33

Closed

 

LDEV# bypass disabled (PCI card present)

J33

Open

 

Speaker type select internal

J36

Pins 3 & 4 closed

 

Speaker type select external

J36

Closed

On board memory enabled

J37

Open

 

On board memory disabled

J37

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

4MB

4MB

None

None

5MB

4MB

(1) 256K x 36

None

6MB

4MB

(1) 256K x 36

(1) 256K x 36

6MB

4MB

(1) 512K x 36

None

8MB

4MB

(1) 512K x 36

(1) 512K x 36

8MB

4MB

(1) 1M x 36

None

12MB

4MB

(1) 1M x 36

(1) 1M x 36

12MB

4MB

(1) 2M x 36

None

16MB

4MB

(1) 2M x 36

(1) 1M x 36

20MB

4MB

(1) 2M x 36

(1) 2M x 36

20MB

4MB

(1) 4M x 36

None

24MB

4MB

(1) 4M x 36

(1) 1M x 36

24MB

4MB

(1) 1M x 36

(1) 4M x 36

28MB

4MB

(1) 2M x 36

(1) 4M x 36

36MB

4MB

(1) 4M x 36

(1) 4M x 36

36MB

4MB

(1) 8M x 36

None

40MB

4MB

(1) 8M x 36

(1) 1M x 36

52MB

4MB

(1) 8M x 36

(1) 4M x 36

64MB

4MB

(1) 8M x 36

(1) 8M x 36

Note: If 64MB is installed, J37 must be closed.

CACHE CONFIGURATION

Size

Bank 0

TAG0

TAG1

128KB

(4) 32K x 8

(1) 32K x 8

(1) 64K x 1

512KB

(4) 128K x 8

(1) 32K x 8

(1) 64K x 1

CACHE JUMPER CONFIGURATION

Size

J26

128KB

Open

512KB

Pins 1 & 2, 3 & 4 closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

2MB

(2) 256K x 16

CPU SPEED SELECTION

Speed

J25

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 TYPE SELECTION

Type

J28

J31

80486SX

Pins 2 & 3 closed

Pins 5 & 6 closed

SL80486SX

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

80486DX

Pins 2 & 3 closed

Pins 1 & 2, 3 & 4 closed

SL80486DX

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

80486DX2

Pins 2 & 3 closed

Pins 1 & 2, 3 & 4 closed

SL80486DX2

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

80486DX4

Pins 2 & 3 closed

Pins 1 & 2, 3 & 4 closed

P24T

Pins 1 & 2 closed

Pins 1 & 2, 3 & 4 closed

CPU MULTIPLIER SELECTION (80486DX4 ONLY)

Multiplier

J29

2x

Pins 2 & 3 closed

3x

Open

CPU VOLTAGE SELECTION

Voltage

J32

3.3v

Pins 1 & 3, 2 & 4 closed

5v

Pins 3 & 5, 4 & 5 closed

DMA CHANNEL SELECTION

Channel

J15

J16

1

Pins 1 & 2 closed

Pins 1 & 2 closed

 

3

Pins 2 & 3 closed

Pins 2 & 3 closed