Processor

CX486S/80486SX/80486DX/80486DX2/80486DX4/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/50MHz

Chip Set

VIA

Max. Onboard DRAM

96MB

Cache

64/128/256KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN2

External battery

J13

AT keyboard connector

CN3

Turbo LED

J14

PS/2 mouse pin connector

CN4

Turbo switch

J15

Parallel port

CN8

Reset switch

J16

Floppy drive interface

CN9

Speaker

J17

IDE interface

CN10

Power LED & keylock

J18

Serial port 1

CN11

Hardware sleep

J19

Serial port 2

CN12

Green status LED

J20

IDE interface LED

J6

32-bit VESA local bus slot

S1

3.3V Daughterboard connector

J11

32-bit VESA local bus slot

S2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

J1

N/A

»

Monitor type select color

J2

Closed

Monitor type select monochrome, EGA & VGA

J2

Open

»

ISA master transfer rate for >5.7MB/sec.

J3

Closed

ISA master transfer rate for 5.0MB/sec.

J3

Open

»

CMOS memory normal operation

J7

Open

CMOS memory clear

J7

Closed

»

IDE interface enabled

J10

pins 1 & 2 closed

IDE interface disabled

J10

pins 2 & 3 closed

»

Factory configured - do not alter

J21

pins 1 & 2 closed

»

DX4 clock mode - 2X

JC6

pins 1 & 2 closed

DX4 clock mode - 2.5X

JC6

pins 2 & 3 closed

DX4 clock mode - 3X

JC6

Open

»

Factory configured - do not alter

JF

pins 1 & 2 closed

»

Factory configured - do not alter

JP1

N/A

»

Factory configured - do not alter

JP3

pins 1 & 2 closed

»

Pentium Overdrive write-back cache

JT1

pins 1 & 2 closed

Pentium Overdrive write-through cache

JT1

pins 2 & 3 closed

»

Factory configured - do not alter

JX1

pins 1 & 2 closed

LOCAL ACTIVITY JUMPER CONFIGURATION

Setting

JV4

JV5

»

VGA or local IDE disabled

pins 1 & 2 closed

pins 1 & 2 closed

SL13 enabled

pins 2 & 3 closed

N/A

SL14 enabled

N/A

pins 2 & 3 closed

PARALLEL PORT DIRECTION CONFIGURATION

Direction

JG

JH

Output

pins 1 & 2 closed

pins 2 & 3 closed

Input

pins 1 & 2 closed

pins 1 & 2 closed

Bi-directional

pins 2 & 3 closed

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

1MB

(4) 256K x 9

NONE

NONE

1MB

NONE

(1) 1M x 36

NONE

1MB

NONE

NONE

(1) 1M x 36

2MB

(4) 256K x 9

(1) 1M x 36

NONE

2MB

NONE

(1) 1M x 36

(1) 1M x 36

2MB

(4) 256K x 9

NONE

(1) 1M x 36

3MB

(4) 256K x 9

(1) 1M x 36

(1) 1M x 36

4MB

(4) 1M x 9

NONE

NONE

4MB

NONE

(1) 1M x 36

NONE

4MB

NONE

NONE

(1) 1M x 36

5MB

(4) 256K x 9

(1) 4M x 36

NONE

5MB

(4) 256K x 9

NONE

(1) 4M x 36

5MB

(4) 1M x 9

(1) 4M x 36

NONE

5MB

(4) 1M x 9

NONE

(1) 1M x 36

5MB

NONE

(1) 1M x 36

(1) 4M x 36

5MB

NONE

(1) 4M x 36

(1) 1M x 36

6MB

(4) 256K x 9

(1) 4M x 36

(1) 1M x 36

6MB

(4) 256K x 9

(1) 1M x 36

(1) 4M x 36

6MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

8MB

(4) 1M x 9

(1) 4M x 36

NONE

8MB

(4) 1M x 9

NONE

(1) 4M x 36

8MB

NONE

(1) 4M x 36

(1) 4M x 36

9MB

(4) 256K x 9

(1) 4M x 36

(1) 4M x 36

9MB

(4) 1M x 9

(1) 1M x 36

(1) 4M x 36

9MB

(4) 1M x 9

(1) 4M x 36

(1) 1M x 36

12MB

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

16MB

(4) 4M x 9

NONE

NONE

16MB

NONE

(1) 16M x 36

NONE

16MB

NONE

NONE

(1) 16M x 36

17MB

(4) 256K x 9

(1) 16M x 36

NONE

17MB

(4) 256K x 9

NONE

(1) 16M x 36

17MB

NONE

(1) 1M x 36

(1) 16M x 36

17MB

NONE

(1) 16M x 36

(1) 1M x 36

17MB

(4) 4M x 9

(1) 1M x 36

NONE

17MB

(4) 4M x 9

NONE

(1) 1M x 36

18MB

(4) 256K x 9

(1) 1M x 36

(1) 16M x 36

18MB

(4) 256K x 9

(1) 16M x 36

(1) 1M x 36

18MB

(4) 4M x 9

(1) 1M x 36

(1) 1M x 36

20MB

(4) 1M x 9

(1) 16M x 36

NONE

20MB

(4) 1M x 9

NONE

(1) 16M x 36

20MB

(4) 4M x 9

(1) 4M x 36

NONE

20MB

(4) 4M x 9

NONE

(1) 4M x 36

20MB

NONE

(1) 4M x 36

(1) 16M x 36

20MB

NONE

(1) 16M x 36

(1) 4M x 36

DRAM CONFIGURATION (CONT.)

Size

Bank 0

Bank 1

Bank 2

21MB

(4) 256K x 9

(4) 4M x 9

(1) 16M x 36

21MB

(4) 256K x 9

(1) 16M x 36

(4) 4M x 9

21MB

(4) 1M x 9

(1) 1M x 36

(1) 16M x 36

21MB

(4) 1M x 9

(1) 16M x 36

(1) 1M x 36

21MB

(4) 4M x 9

(1) 1M x 36

(4) 4M x 9

21MB

(4) 4M x 9

(4) 4M x 9

(1) 1M x 36

24MB

(4) 1M x 9

(1) 4M x 36

(1) 16M x 36

24MB

(4) 1M x 9

(1) 16M x 36

(1) 4M x 36

24MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

32MB

(4) 4M x 9

(1) 16M x 36

NONE

32MB

(4) 4M x 9

NONE

(1) 16M x 36

32MB

NONE

(1) 16M x 36

(1) 16M x 36

32MB

NONE

(1) 32M x 36

NONE

32MB

NONE

NONE

(1) 16M x 36

33MB

(4) 256K x 9

(1) 16M x 36

(1) 16M x 36

33MB

(4) 4M x 9

(1) 1M x 36

(1) 16M x 36

33MB

(4) 4M x 9

(1) 16M x 36

(1) 1M x 36

36MB

(4) 1M x 9

(1) 16M x 36

(1) 16M x 36

36MB

(4) 4M x 9

(1) 4M x 36

(1) 16M x 36

36MB

(4) 4M x 9

(1) 16M x 36

(1) 4M x 36

48MB

(4) 4M x 9

(1) 16M x 36

(1) 16M x 36

64MB

(4) 16M x 9

NONE

NONE

64MB

NONE

(1) 32M x 36

(1) 32M x 36

65MB

(4) 16M x 9

(1) 1M x 36

NONE

65MB

(4) 16M x 9

NONE

(1) 1M x 36

66MB

(4) 16M x 9

(1) 1M x 36

(1) 1M x 36

68MB

(4) 16M x 9

(1) 4M x 36

NONE

68MB

(4) 16M x 9

NONE

(1) 4M x 36

69MB

(4) 16M x 9

(1) 1M x 36

(1) 4M x 36

69MB

(4) 16M x 9

(1) 4M x 36

(1) 1M x 36

72MB

(4) 16M x 9

(1) 4M x 36

(1) 4M x 36

80MB

(4) 16M x 9

(1) 16M x 36

NONE

80MB

(4) 16M x 9

NONE

(1) 16M x 36

81MB

(4) 16M x 9

(1) 1M x 36

(1) 16M x 36

81MB

(4) 16M x 9

(1) 16M x 36

(1) 1M x 36

84MB

(4) 16M x 9

(1) 4M x 36

(1) 16M x 36

84MB

(4) 16M x 9

(1) 16M x 36

(1) 4M x 36

96MB

(4) 16M x 9

(1) 16M x 36

(1) 16M x 36

IDE CONFIGURATION

Setting

J4

J5

Pin 27 link to IOCHRDY signal

Closed

Closed

Pin 27 open

Open

Open

KEYBOARD CONTROLLER SELECTION

Type

JX3

JX4

RN4

RN5

RN7

RN8

Internal w/ PS/2 mouse

2 & 3

2 & 3

Not installed

Not installed

Not installed

Installed

Internal w/out PS/2

2 & 3

1 & 2

Not installed

Installed

Not installed

Not installed

External

1 & 2

1 & 2

Installed

Not installed

Installed

Not installed

Note:Pins designated should be in the closed position.

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

JS1

JS2

JS3

64KB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

128KB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

256KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JC1

JC2

JC3

JC4

JC5

JC7

RN20

RN21

RN22

CX486S

2 & 3

2 & 3

Open

1 & 2

Open

Open

Closed

Open

Open

CX486S & CX487S

1 & 2

1 & 2

Open

1 & 2

N/A

Open

N/A

N/A

N/A

CX486DX

1 & 2

1 & 2

Open

1 & 2

Open

Open

Closed

Open

Open

80486SX

2 & 3

2 & 3

Open

1 & 2

Open

Closed

Open

Open

Open

80486DX

1 & 2

1 & 2

Open

1 & 2

Open

Closed

Closed

Open

Open

80486DX2

1 & 2

1 & 2

Open

1 & 2

Open

Closed

Closed

Open

Open

AMD486DXL

1 & 2

1 & 2

Open

1 & 2

Open

Closed

Open

Open

Closed

80486DX4

1 & 2

1 & 2

Open

1 & 2

Closed

Closed

Open

Open

Closed

Pentium Overdrive

1 & 2

1 & 2

Closed

2 & 3

Closed

Closed

Open

Open

Open

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONT.)

Type

JCX1

JCX2

JP2

JX2

Intel

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

Cyrix

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

Any other

N/A

N/A

pins 1 & 2 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JK1

JK2

JK3

JK4

25MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

33MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

40MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

50iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

50MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

LOCAL IDE SPEED CONFIGURATION

Speed

J8

J9

Normal

pins 2 & 3 closed

pins 2 & 3 closed

Medium

pins 1 & 2 closed

pins 2 & 3 closed

Fast

pins 1 & 2 closed

pins 1 & 2 closed

VESA WAIT STATE/BUS SPEED CONFIGURATION

Speed

Wait states

JV2

JV3

£ 33MHz

0 wait states

pins 2 & 3 closed

pins 2 & 3 closed

> 33MHz

1 wait state

pins 1 & 2 closed

pins 1 & 2 closed