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AIO4044

DATAEXPERT CORPORATION

AIO4044

Device Type

Mainboard

Processor

CX486S/80486SX/80487SX/80486DX/80486DX2/80486DX4/P24T

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz

Chip Set

OPTI

Video Chip Set

Trident

Maximum Onboard Memory

64MB

Maximum Video Memory

Unidentified

Cache

128/512KB

BIOS

Award

Dimensions

188mm x 188mm

I/O Options

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

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

PS/2 mouse port

CN8

Parallel port

CN2

Power LED & keylock

J2

Serial port 2

CN3

Reset switch

J3

Serial port 1

CN4

Turbo LED

J4

VGA feature connector

CN5

Turbo switch

J5

Floppy drive interface

CN6

Speaker

J6

IDE interface

CN7

Riser slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

J1

Unidentified

»

Factory configured - do not alter

JP2

Unidentified

»

Factory configured - do not alter

JP5

Unidentified

»

VGA output select interlaced

JP6

Closed

 

VGA output select non interlaced

JP6

Open

»

CPU clock speed select <33MHz

JP10

Open

 

CPU clock speed select >33MHz

JP10

Closed

»

IDE interface enabled

JP24/pins 5 & 6

Open

 

IDE interface disabled

JP24/pins 5 & 6

Closed

»

IDE select primary

JP24/pins 7 & 8

Open

 

IDE select secondary

JP24/pins7 & 8

Closed

»

IDE read prefetch disabled

JP24/pins 9 & 10

Closed

 

IDE read prefetch enabled

JP24/pins 9 & 10

Open

SIMM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(1) 512K x 36

None

4MB

(1) 1M x 36

None

4MB

(1) 512K x 36

(1) 512K x 36

6MB

(1) 1M x 36

(1) 512K x 36

8MB

(1) 2M x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

10MB

(1) 2M x 36

(1) 512K x 36

12MB

(1) 2M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

SIMM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

16MB

(1) 2M x 36

(1) 2M x 36

18MB

(1) 4M x 36

(1) 512K x 36

20MB

(1) 4M x 36

(1) 1M x 36

24MB

(1) 4M x 36

(1) 2M x 36

32MB

(1) 8M x 36

None

36MB

(1) 8M x 36

(1) 1M x 36

40MB

(1) 8M x 36

(1) 2M x 36

48MB

(1) 8M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

TAG

128KB

(4) 32K x 8

(1) 8K x 8

512KB

(4) 128K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP28

JP29

128KB

Open

Open

512KB

Closed

Closed

VIDEO MEMORY CONFIGURATION

Note: The size and location of the video memory is unidentified.

CPU SPEED SELECTION

Speed

JP13

JP14

JP15

JP16

25MHz

Closed

Closed

Closed

Open

33MHz

Closed

Closed

Open

Open

40MHz

Open

Closed

Open

Open

50iMHz

Closed

Closed

Closed

Open

50MHz

Closed

Open

Open

Open

66iMHz

Closed

Closed

Open

Open

75iMHz

Closed

Closed

Closed

Open

100iMHz

Closed

Closed

Open

Open

CPU TYPE SELECTION

Type

JP25

JP26

CX486S

Pins 2 & 3 closed

Open

80486SX

Pins 2 & 3 closed

Open

80487SX

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

80486DX

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

80486DX4

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

P24T

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

CPU MULTIPLIER SELECTION

Multiplier

JP22

2x

Pins 1 & 2 closed

2.5x

Pins 2 & 3 closed

3x

Open

CPU VOLTAGE SELECTION

Voltage

JP27

3.3v

Pins 2 & 3, 5 & 6 closed

5v

Pins 1 & 2, 4 & 5 closed

VGA SELECTION

Setting

JP3

JP8

»

Enabled

Pins 1 & 2 closed

Pins 1 & 2 closed

 

Disabled

Pins 2 & 3 closed

Pins 2 & 3 closed

IDE MODE SELECTION

Mode

JP24/pins 1 & 2

JP24/pins 3 & 4

»

0

Closed

Closed

 

1

Open

Closed

 

2

Closed

Open

 

3

Open

Open

IDE FREQUENCY SELECTION

Frequency

JP24/pins 11 & 12

JP24/pins 13 & 14

 

25MHz

Open

Open

»

33MHz

Closed

Open

 

40MHz

Open

Closed

 

50MHz

Closed

Closed