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486 MODEL 3X3 SERIES, 4X4 SERIES

PACKARD BELL

486 MODEL 3X3 SERIES, 4X4 SERIES

Device Type

Mainboard

Processor

80486SX/80486SX2/80486DX/80486DX2/P24T

Processor Speed

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

Chip Set

OPTI

Video Chip Set

Cirrus Logic

Maximum Onboard Memory

64MB

Maximum Video Memory

Unidentified

Cache

128/512KB

BIOS

Phoenix

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slot, floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

J2

IDE interface

J23

VGA port

J3

IDE interface

J24

Parallel port

J5

Front panel connector

J34

Serial port 1

J6

Keylock

J35

VGA feature connector

J14

Chassis fan power

J38

Floppy drive interface

J21

Riser slot

SL1

Modem connector

J22

32-bit VESA local bus slot

SL2

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

J4

Unidentified

Monitor type select color

J8

Closed

 

Monitor type select monochrome

J8

Open

VGA IRQ9 disabled

J9

Open

 

VGA IRQ9 enabled

J9

Closed

Factory configured - do not alter

J10

Unidentified

Factory configured - do not alter

J11

Unidentified

Boot block normal operation

J17

Pins 2 & 3 closed

 

Boot block enabled

J17

Pins 1 & 2 closed

Parity disabled

J18

Pins 2 & 3 closed

 

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

Factory configured - do not alter

J29

Unidentified

On board speaker enabled

J30

Pins 3 & 4 closed

 

On board speaker disabled

J30

Open

LDEV# enabled

J33

Closed

 

LDEV# disabled

J33

Open

Speaker enabled

J36

Pins 3 & 4 closed

 

Speaker disabled

J36

Open

Factory configured - do not alter

J39

Open

Factory configured - do not alter

J40

Unidentified

Factory configured - do not alter

J41

Unidentified

SIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(1) 256K x 36

None

4MB

2MB

(1) 512K x 36

None

4MB

2MB

(1) 256K x 36

(1) 256K x 36

4MB

3MB

(1) 512K x 36

(1) 256K x 36

4MB

4MB

(1) 1M x 36

None

4MB

4MB

(1) 512K x 36

(1) 512K x 36

4MB

5MB

(1) 1M x 36

(1) 256K x 36

4MB

6MB

(1) 1M x 36

(1) 512K x 36

4MB

8MB

(1) 2M x 36

None

4MB

8MB

(1) 1M x 36

(1) 1M x 36

4MB

9MB

(1) 2M x 36

(1) 256K x 36

4MB

10MB

(1) 2M x 36

(1) 512K x 36

4MB

12MB

(1) 2M x 36

(1) 1M x 36

4MB

12MB

(1) 1M x 36

(1) 2M x 36

4MB

16MB

(1) 4M x 36

None

4MB

16MB

(1) 2M x 36

(1) 2M x 36

4MB

17MB

(1) 4M x 36

(1) 256K x 36

4MB

18MB

(1) 4M x 36

(1) 512K x 36

4MB

20MB

(1) 4M x 36

(1) 1M x 36

4MB

24MB

(1) 4M x 36

(1) 2M x 36

4MB

32MB

(1) 8M x 36

None

4MB

32MB

(1) 4M x 36

(1) 4M x 36

4MB

33MB

(1) 8M x 36

(1) 256K x 36

4MB

34MB

(1) 8M x 36

(1) 512K x 36

4MB

36MB

(1) 8M x 36

(1) 1M x 36

4MB

40MB

(1) 8M x 36

(1) 2M x 36

4MB

48MB

(1) 8M x 36

(1) 4M x 36

4MB

64MB

(1) 8M x 36

(1) 8M x 36

4MB

Note: If J37 is set to enabled, add 4 MB to the size column to get correct memory size. If 64MB is installed, J37 must be disabled.

ON BOARD MEMORY CONFIGURATION

Setting

J37

Enabled

Open

 

Disabled

Closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

Unidentified

512KB

(4) 64K x 8

(4) 64K x 8

Unidentified

CACHE JUMPER CONFIGURATION

Size

J26

128KB

Open

512KB

Pins 1 & 2, 3 & 4 closed

VIDEO MEMORY CONFIGURATION

Note: The size of the video memory is unidentified.

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

CPU TYPE SELECTION

Type

J31

80486SX

Pins 5 & 6 closed

80486SX2

Pins 1 & 2, 3 & 4 closed

80486DX

Pins 1 & 2, 3 & 4 closed

80486DX2

Pins 1 & 2, 3 & 4 closed

P24T

Pins 1 & 2, 3 & 4 closed

CPU TYPE SELECTION

Type

J28

SL enhanced

Pins 1 & 2 closed

Non SL enhanced

Pins 2 & 3 closed

P24T

Pins 1 & 2 closed

CPU VOLTAGE SELECTION

Voltage

J32

 

3.3v

Pins 1 & 3, 2 & 4 closed

5v

Pins 3 & 5, 4 & 6 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