Processor

80486DX2/CX486DX2/80486DX4/Pentium Overdrive

Processor Speed

25/33/50(internal)/66(internal)/99(internal)MHz

Chip Set

EFAR

Max. Onboard DRAM

64MB

Cache

128/256/512/1024KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

riser card, serial ports (2), VGA feature connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

BNC connector

CN1

AUI connector

J5

RJ-45 connector

CN2

PS/2 mouse port

J6

Serial port 1

CN3

12V DC power CPU cooling fan

J9

Serial port 2

CN4

Power LED & keylock

J10

Parallel port

CN5

Reset switch

J11

Analog connector

CN6

Feature connector

J13

IDE interface

J2

Standby mode LED

JP81

LAN extra connector

J3

Standby mode switch connector

JP86

Floppy drive interface

J4

Keyboard connector

KB1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Internal speaker enabled

J8

pins 1 & 2 closed

External speaker enabled

J8

Open

»

Factory configured - do not alter

JP2

Open

»

Monitor type select color

JP4

pins 1 & 2 closed

Monitor type select monochrome

JP4

pins 2 & 3 closed

»

Password normal operation

JP5

Open

Password clear

JP5

Closed

»

Factory configured - do not alter

JP9

Open

»

Factory configured - do not alter

JP10

Open

»

Factory configured - do not alter

JP11

Open

»

Factory configured - do not alter

JP12

Open

»

Factory configured - do not alter

JP13

Open

»

Factory configured - do not alter

JP14

Open

»

Factory configured - do not alter

JP15

Open

»

Factory configured - do not alter

JP16

Closed

»

Factory configured - do not alter

JP20

pins 2 & 3 closed

»

Factory configured - do not alter

JP21

pins 2 & 3 closed

»

Factory configured - do not alter

JP24

pins 2 & 3 closed

»

Factory configured - do not alter

JP25

Closed

»

Factory configured - do not alter

JP34

pins 2 & 3 closed

»

LAN buffer size 16K

JP35

Open

LAN buffer size 64K

JP35

Closed

»

Factory configured - do not alter

JP39

Open

»

Factory configured - do not alter

JP40

Open

»

Factory configured - do not alter

JP41

Open

»

Factory configured - do not alter

JP42

Open

»

Factory configured - do not alter

JP43

Open

»

Factory configured - do not alter

JP44

Open

»

Factory configured - do not alter

JP45

Open

»

Factory configured - do not alter

JP46

Open

USER CONFIGURABLE SETTINGS (CONT.)

Function

Jumper

Position

»

Flash EPROM 5V

JP50

pins 1 & 2 closed

Flash EPROM 12V

JP50

pins 2 & 3 closed

»

Flash EPROM type Intel 28F010

JP51

pins 1 & 2 closed

Flash EPROM type Intel 28F010

JP51

pins 2 & 3 closed

»

EPROM enabled

JP52

pins 2 & 3 closed

Flash EPROM enabled

JP52

pins 1 & 2 closed

»

Factory configured - do not alter

JP54

pins 2 & 3 closed

»

Factory configured - do not alter

JP56

pins 1 & 2 closed

»

5V CPU voltage select

JP57

pins 1 & 3 and 2 & 4

3V CPU voltage select

JP57

pins 3 & 5 and 4 & 6

»

VESA VGA enabled

JP64

pins 1 & 2 and 3 & 4

VESA VGA disabled

JP64

Open

»

Factory configured - do not alter

JP68

pins 1 & 2 and 5 & 6

»

CPU clock running at 33MHz

JP71

Open

CPU clock running at 50MHz

JP71

pins 1 & 2 closed

»

Local bus timing selector 1

JP71

Open

Local bus timing selector 2

JP71

pins 3 & 4 closed

VESA VL bus of 72Hz at modes 3, 12, 5E, & 5F

JP71

pins 5 & 6 closed

VESA VL bus of 60Hz at modes 3, 12, 5E, & 5F

JP71

Open

»

Intel 80486DX4/99 standby mode CPU fan control disabled

JP73

pins 1 & 2 closed

Intel 80486DX4/99 standby mode CPU fan control enabled

JP73

pins 2 & 3 closed

»

Factory configured - do not alter

JP76

Closed

»

Factory configured - do not alter

JP77

Closed

»

Factory configured - do not alter

JP78

Closed

»

Factory configured - do not alter

JP79

Closed

»

Factory configured - do not alter

JP80

pins 2 & 3 closed

»

Green PC enabled

JP82

Closed

Green PC disabled

JP82

Open

»

Standby mode reduces the clock to 8 MHz

JP83

Closed

Clock is unchanged under standby mode

JP83

Open

»

Flush Ethernet setting disabled

JP89

pins 2 & 3 closed

Flush Ethernet setting enabled

JP89

pins 1 & 2 closed

»

LAN enabled

JP90

pins 1 & 2 closed

LAN disabled

JP90

pins 2 & 3 closed

Note:Pins designated should be in the closed position.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

2MB

(1) 512K x 36

NONE

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 1M x 36

NONE

NONE

NONE

4MB

(1) 512K x 36

NONE

(1) 512K x 36

NONE

DRAM CONFIGURATION (CONT.)

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

16MB

(1) 2M x 36

NONE

(1) 2M x 36

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 8M x 36

NONE

NONE

NONE

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

NONE

(1) 8M x 36

NONE

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG/U21

TAG/U21A

JP17

JP18

JP28

128KB

(4) 32K x 8

NONE

(1) 32K x 8

(1) 128K x 8

2 & 3

2 & 3

2 & 3

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 128K x 8

2 & 3

1 & 2

1 & 2

512KB

(4) 128K x 8

NONE

(1) 32K x 8

(1) 128K x 8

1 & 2

2 & 3

2 & 3

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

(1) 128K x 8

1 & 2

1 & 2

1 & 2

Note:Pins designated should be in the closed position.

CACHE JUMPER CONFIGURATION

Size

JP31/pins 1 & 2

JP31/pins 3 & 4

JP31/pins 5 & 6

128KB

Open

Open

Open

256KB

Closed

Open

Open

512KB

Closed

Closed

Open

1MB

Closed

Closed

Closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

1MB

(8) 256K x 4

NONE

2MB

(8) 256K x 4

(8) 256K x 4

CPU TYPE CONFIGURATION

Type

JP6

JP7

JP8

JP58

JP59 & JP60

JP61

JP62

80486SX

N/A

N/A

N/A

pins 1 & 2

pins 2 & 3

pins 1 & 2

Open

CX486S

Closed

Open

Open

pins 2 & 3

pins 2 & 3

pins 2 & 3

Open

80487SX

N/A

N/A

N/A

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

80486DX

N/A

N/A

N/A

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

CX486DX

Closed

Open

Closed

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

ODP486SX

N/A

N/A

N/A

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

CX486S2

Closed

Open

Open

pins 2 & 3

pins 2 & 3

pins 2 & 3

Open

80486DX2

N/A

N/A

N/A

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

CX486DX2

Closed

Open

Closed

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

80486DX4

N/A

N/A

N/A

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

Pentium Overdrive

N/A

N/A

N/A

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

Note:Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

JP53/pins 1 & 2

JP53/pins 3 & 4

JP53/pins 5 & 6

JP67

25MHz

Open

Open

Closed

Open

33MHz

Closed

Closed

Closed

Open

50i MHz

Open

Open

Closed

pins 2 & 3

66i MHz

Closed

Closed

Closed

Open

99i MHz

Closed

Closed

Closed

Open

Note:Pins designated should be in the closed position.

CPU WRITE-BACK CONFIGURATION

Type

JP74

JP75

»

Other CPUs

Open

pins 2 & 3 closed

Cyrix write-back

pins 1 & 2 closed

pins 2 & 3 closed

Intel write-back

pins 2 & 3 closed

pins 2 & 3 closed

No write-back

N/A

pins 1 & 2 closed

SYSTEM MANAGEMENT MODE CPU SELECT

Type

JP63

JP65

»

Other

Open

Open

Cyrix SMM

pins 2 & 3 closed

pins 1 & 2 closed

Intel SMM

pins 1 & 2 closed

pins 2 & 3 closed

VESA WAIT STATE/BUS SPEED CONFIGURATION

CPU speed

Wait states

JP36

JP37

<=33MHz

0 wait states

pins 2 & 3 closed

pins 1 & 2 closed

>33MHz

1 wait state

pins 1 & 2 closed

pins 2 & 3 closed

VESA VL-BUS VGA CONFIGURATION

Refresh rates

JP72/pins 1 & 2

JP72/pins 3 & 4

87Hz Interlaced

Open

Open

60Hz Non-interlaced

Closed

Closed

70Hz Non-interlaced

Closed

Open

72Hz Non-interlaced

Closed

Closed

Note:When using the built-in VESA VL-bus VGA, pins 1 to 8 should be set to match the refresh rates of the monitor attached to the G486ECV-AIO.

ECP DACK SELECT

Refresh rates

JP26/pins 1 & 2

JP26/pins 3 & 4

JP26/pins 5 & 6

»

Dack 1

Open

Closed

Open

Dack 0

Closed

Open

Open

Dack 3

Open

Open

Closed

ECP DRQ SELECT

Refresh rates

JP27/pins 1 & 2

JP27/pins 3 & 4

JP27/pins 5 & 6

»

DRQ1

Open

Closed

Open

DRQ0

Closed

Open

Open

DRQ3

Open

Open

Closed

PARALLEL PORT INTERRUPT SELECT

IRQ

JP48

JP49

»

IRQ7

pins 1 & 2 closed

pins 2 & 3 closed

IRQ5

pins 2 & 3 closed

pins 1 & 2 closed

Note:The default for JP49 is pins 1 & 2 closed.

CPU FAN TYPE CONFIGURATION

Fan

JP84

JP85

JP87

»

12V

Closed

Open

N/A

5V

Open

Closed

pins 1 & 2 closed

Connected to hard drive

N/A

N/A

pins 2 & 3 closed