IPTools.net.ua

Processor

80486SX/ODP486SX/80487SX/ODP486DX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

UMC

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, serial ports (2), VGA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

J1

Speaker

J9

Serial port 1

J2

Turbo LED

J10

Parallel port

J3

Reset switch

J11

VGA port

J4

IDE interface LED

JP20

IDE interface

J5

Power on connector

JP45

VGA feature connector

J6

Turbo switch

JP46

Floppy drive interface

J7

Riser Card

SL1

External battery

J8

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

�

IDE interface enabled

JP5

Closed

IDE interface disabled

JP5

Open

�

Floppy drive interface enabled

JP6

pins 2 & 3 closed

Floppy drive interface disabled

JP6

pins 1 & 2 closed

�

Factory configured - do not alter

JP8

Open

�

Factory configured - do not alter

JP9

Open

�

LOCA# signal select level signal

JP10

pins 1 & 2 closed

LOCA# signal select tri state signal

JP10

pins 2 & 3 closed

�

On board VESA video enabled

JP14

pins 2 & 3 closed

On board VESA video disabled

JP14

pins 1 & 2 closed

�

Factory configured - do not alter

JP16

N/A

�

Floppy drive pre comp mode select normal

JP21

Open

Floppy drive pre comp mode select alternate

JP21

Closed

�

Floppy drive type select single speed spindle

JP22

Open

Floppy drive type select dual speed spindle

JP22

Closed

�

Monitor type select color

JP23

Closed

Monitor type select monochrome

JP23

Open

�

Battery type select internal

JP24

Closed

Battery type select external

JP24

Open

�

Power good signal detect from board

JP25

pins 1 & 2 closed

Power good signal detect from power supply

JP25

pins 2 & 3 closed

�

Factory configured - do not alter

JP27

N/A

�

Factory configured - do not alter

JP33

Open

�

Factory configured - do not alter

JP34

N/A

�

Factory configured - do not alter

JP35

N/A

�

Local bus video enabled

JP38

Open

Local bus video disabled

JP38

pins 1 & 2 closed

�

Factory configured - do not alter

JP47

Open

Note: The locations of JP10, JP14, & JP16 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP36

JP37

JP39

JP40

JP41

JP42

JP43

JP44

64KB

1 & 2

1 & 2

Open

1 & 2

Open

Open

Open

Open

128KB

2 & 3

1 & 2

1 & 2

2 & 3

Closed

Closed

Open

Open

256KB

2 & 3

2 & 3

2 & 3

1 & 2

Closed

Closed

Closed

Open

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP26

JP28

JP30

JP31

JP32

80486SX (PQFP)

1 & 2

Open

1 & 2

Open

1 & 2, 3 & 4

80486SX (PGA)

2 & 3

Open

Open

Open

2 & 3

ODP486SX

1 & 2

Open

1 & 2

Open

1 & 2, 3 & 4

80487SX

1 & 2

Open

1 & 2

Open

1 & 2, 3 & 4

ODP486DX

2 & 3

Open

2 & 3

Open

1 & 2, 3 & 4

80486DX (PQFP)

1 & 2

Closed

1 & 2

Closed

Open

80486DX (PGA)

2 & 3

Open

2 & 3

Open

1 & 2, 3 & 4

80486DX2

2 & 3

Open

2 & 3

Open

1 & 2, 3 & 4

Pentium Overdrive

1 & 2

Open

1 & 2

Open

1 & 2, 3 & 4

Note: Pins designated should be in the closed position.

PARALLEL PORT CONFIGURATION

Setting

JP1

JP4

JP29

LPT2

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

LPT1

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

LPT3

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

Disabled

pins 2 & 3 closed

pins 2 & 3 closed

Open

SERIAL PORT CONFIGURATION

Setting

JP2

JP3

JP7

COM1 & COM2 enabled

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

COM1 disabled & COM2 enabled

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

COM1 enabled & COM2 disabled

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

COM1 & COM2 disabled

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

VIDEO CONFIGURATION

Resolution

Hz

JP17

JP18

JP19

640 x 480

60Hz

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

640 x 480

70Hz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

800 x 600

60Hz

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

800 x 600

70Hz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

800 x 600

56Hz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

1024 x 768

43Hz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

1024 x 768

60Hz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

1024 x 768

70Hz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

Note: The location of the above jumpers is unidentified.

VRAM MEMORY CONFIGURATION

Size

JP11

JP12

JP13

512KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

1MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

Note: The location of the above jumpers is unidentified.