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EXP8C49

DATAEXPERT CORPORATION

EXP8C49

Device Type

Mainboard

Processor

CX486DX2/CX486DX4/CX 5X86

Processor Speed

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

Chip Set

ALI

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

128/256/512KB

BIOS

AMI

Dimensions

220mm x 220mm

I/O Options

32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2)

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

CN1

IDE interface LED

J2

Serial port 1

CN2

Reset switch

J3

Floppy drive interface

CN3

Turbo switch

J4

Parallel port

CN4

Turbo LED

J5

IDE interface 1

CN5

Power LED & keylock

J6

IDE interface 2

CN6

Speaker

J7

PS/2 mouse port

CN7

Green PC connector

JP15

External battery

J1

32-bit PCI slots

PC1 – PC3

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Battery type select external

J1

Closed

 

CMOS memory clear

J1

Pins 1 & 2 closed

»

Factory configured - do not alter

JP4

Unidentified

 

Parallel port IRQ select IRQ7

JP9

Pins 2 & 3 closed

 

Parallel port IRQ select IRQ5

JP9

Pins 1 & 2 closed

»

Factory configured - do not alter

JP14

Unidentified

»

Factory configured - do not alter

JP18

Unidentified

 

Flash BIOS voltage select 12v

JP21

Pins 2 & 3 closed

 

Flash BIOS voltage select 5v

JP21

Pins 1 & 2 closed

»

Factory configured - do not alter

JP24

Unidentified

»

Factory configured - do not alter

JP41

Unidentified

SIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 36

None

None

None

8MB

(1) 2M x 36

None

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

12MB

(1) 2M x 36

(1) 1M x 36

None

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

12MB

(1) 1M x 36

(1) 2M x 36

None

None

16MB

(1) 4M x 36

None

None

None

16MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

None

16MB

(1) 2M x 36

(1) 2M x 36

None

None

SIMM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 4M x 36

(1) 1M x 36

None

None

20MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

None

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

None

24MB

(1) 4M x 36

(1) 2M x 36

None

None

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

None

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 8M x 36

None

None

None

32MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

36MB

(1) 8M x 36

(1) 1M x 36

None

None

40MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

None

40MB

(1) 8M x 36

(1) 2M x 36

None

None

40MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

48MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

None

48MB

(1) 8M x 36

(1) 4M x 36

None

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

56MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

56MB

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

None

64MB

(1) 8M x 36

(1) 8M x 36

None

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

TAG

128KB (A)

None

None

(4) 32K x 8

(1) 8K x 8

128KB (B)

(1) 32K x 32

None

None

(1) 8K x 8

256KB (A)

None

None

(4) 64K x 8

(1) 16K/32K x 8

256KB (B)

(1) 32K x 32

None

(4) 32K x 8

(1) 16K/32K x 8

256KB (C)

(1) 32K x 32

(1) 32K x 32

None

(1) 16K/32K x 8

512KB

None

None

(4) 128K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP17

JP20

JP37

JP42

128KB (A)

Open

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

128KB (B)

Open

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB (A)

Open

Closed

Pins 1 & 2 closed

Pins 2 & 3 closed

256KB (B)

Open

Closed

Pins 2 & 3 closed

Pins 2 & 3 closed

256KB (C)

Open

Closed

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB

Closed

Closed

Pins 1 & 2 closed

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP11

JP12

JP13

JP16

40MHz

Open

Closed

Pins 2 & 3 closed

Open

40MHz

Open

Closed

Pins 1 & 2 closed

Closed

50iMHz

Open

Open

Pins 2 & 3 closed

Open

66iMHz

Closed

Closed

Pins 2 & 3 closed

Open

75iMHz

Open

Open

Pins 2 & 3 closed

Open

100iMHz

Closed

Closed

Pins 2 & 3 closed

Open

Note: Either setting may be used for 40MHz.

CPU TYPE SELECTION

Type

JP23

JP32

JP35

CX486DX2

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

CX486DX4

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

CX 5X86

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 4 closed

CPU VOLTAGE SELECTION

Voltage

JP29

 

3.3v

Pins 1 & 2 closed

»

3.45v

Pins 3 & 4 closed

 

3.6v

Pins 5 & 6 closed

DMA CHANNEL SELECTION

Channel

JP5

JP6

1

Pins 1 & 2 closed

Pins 1 & 2 closed

3

Pins 2 & 3 closed

Pins 2 & 3 closed

INTERNAL KEYBOARD SELECTION

Setting

JP19

JP39

JP40

»

Enabled

Open

Closed

Closed

 

Disabled

Closed

Open

Open