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ADVANTAGE! (94) 486 (202601-XXX)

AST RESEARCH, INC.

ADVANTAGE! (94) 486 (202601-XXX)

Processor

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

Processor Speed

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

Chip Set

AST

Max. Onboard DRAM

32MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

PS/2 mouse port, floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN1

Power LED & keylock (not used)

E12

Serial port 2

CN2

IDE interface LED (not used)

E13

Serial port 1

CN3

IDE interface

J22

Parallel port

CN4

Floppy drive interface

J24

VGA port

CN5

Chassis fan power

J28

Reset switch (not used)

E11

Riser card

SL1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Parallel port IRQ select IRQ7

E1

pins 1 & 2 closed

 

Parallel port IRQ select IRQ5

E1

pins 2 & 3 closed

On board video enabled

E3

Closed

 

On board video disabled

E3

Open

Monitor type select color

E4

Open

 

Monitor type select monochrome

E4

Closed

CMOS memory normal operation

E5

Open

 

CMOS memory clear

E5

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(1) 512K x 36

(1) 512K x 36

4MB

(1) 1M x 36

NONE

5MB

(1) 1M x 36

(1) 256K x 36

6MB

(1) 1M x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

9MB

(1) 2M x 36

(1) 256K x 36

10MB

(1) 2M x 36

(1) 512K x 36

12MB

(1) 2M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

17MB

(1) 4M x 36

(1) 256K 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) 4M x 36

(1) 4M x 36

CPU SPEED CONFIGURATION

Speed

E2

25MHz

Closed

33MHz

Open

50iMHz

Closed

66IMHz

Open

CPU TYPE CONFIGURATION

Type

E6

E7

E8

E9

E10

80486SX (PQFP)

1 & 2

Closed

2 & 3

1 & 2

2 & 3

80486SX (PGA)

1 & 2

Open

1 & 2

2 & 3

1 & 2

80487SX, ODP

1 & 2

Closed

2 & 3

1 & 2

2 & 3

80486DX,DX2,ODPR

1 & 2

Closed

1 & 2

2 & 3

2 & 3

Pentium Overdrive

2 & 3

Closed

2 & 3

1 & 2

2 & 3

Note: Pins designated should be in the closed position.