IPTools.net.ua

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