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ADVANTAGE PLUS! SERIES 486 (MT)

AST RESEARCH, INC.

ADVANTAGE PLUS! SERIES 486 (MT)

(202528-101)

Processor

80486SX/80487SX/ODP486/ODPR486/80486DX/80486DX2/P24T

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

64/256KB

BIOS

AST

Dimensions

355mm x 305mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), 8514 video pass through connector, VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

VGA port

CN1

Reset switch

E3

Serial port

CN2

IDE interface LED

E4

Serial port

CN3

8514 video pass through connector

J19

PS/2 mouse port

CN4

IDE interface

J22

Parallel port

CN5

Floppy drive interface

J24

Power LED

E1

Chassis fan power

J28

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

»

CMOS memory normal operation

E5

Open

 

CMOS memory clear

E5

Closed

»

Factory configured - do not alter

E14

Pins 1 & 2 closed

»

Parallel port IRQ select IRQ7

E15

Pins 1 & 2 closed

 

Parallel port IRQ select IRQ5

E15

Pins 2 & 3 closed

»

Factory configured - do not alter

E800

Pins 2 & 3 closed

»

Factory configured - do not alter

E801

Pins 1 & 2 closed

»

Monitor power conservation disabled

E802

Pins 2 & 3 closed

 

Monitor power conservation enabled

E802

Pins 1 & 2 closed

»

Factory configured - do not alter

E803

Pins 1 & 2 closed

»

Factory configured - do not alter

E804

Pins 1 & 2 closed

»

On board video enabled

SW1/1

Off

 

On board video disabled

SW1/1

On

»

Factory configured - do not alter

SW1/2

Off

»

Flash BIOS normal operation

SW1/3

Off

 

Flash BIOS force update at boot

SW1/3

On

»

Password enabled

SW1/4

Off

 

Password disabled

SW1/4

On

»

Monitor type select color

SW1/5

On

 

Monitor type select monochrome

SW1/5

Off

»

Factory configured - do not alter

SW1/6

Off

»

Factory configured - do not alter

SW1/7

Off

»

Setup access enabled

SW1/8

Off

 

Setup access disabled

SW1/8

On

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

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

None

4MB

(1) 1M x 36

None

None

None

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

(1) 1M x 36

(1) 256K x 36

None

None

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

None

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

None

None

9MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

None

10MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

13MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

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

17MB

(1) 4M x 36

(1) 256K x 36

None

None

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

None

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

None

None

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

None

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

None

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

None

None

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

None

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

None

37MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

49MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

52MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(8) 8K x 8

(1) 8K x 9

256KB

(8) 32K x 8

(1) 32K x 9

CACHE JUMPER CONFIGURATION

Size

E6

E7

E8

None

Pins 1 & 2 closed

Open

Open

64KB

Pins 1 & 2 closed

Open

Open

256KB

Pins 2 & 3 closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

E9

E10

E11

E12

E13

80486SX

Open

2 & 3

1 & 2

Open

2 & 3

80487SX

1 & 2

1 & 2

2 & 3

Closed

2 & 3

ODP486

1 & 2

1 & 2

2 & 3

Closed

2 & 3

ODPR486

2 & 3

1 & 2

1 & 2

Closed

2 & 3

80486DX

2 & 3

1 & 2

1 & 2

Closed

2 & 3

80486DX2

2 & 3

1 & 2

1 & 2

Closed

2 & 3

P24T

1 & 2

1 & 2

2 & 3

Closed

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

E16

25MHz

Open

33MHz

Closed

50iMHz

Open

66iMHz

Closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

512KB

(1) 256K x 16

None

None

1MB

(1) 256K x 16

(1) 256K x 16

None

2MB

(1) 256K x 16

(1) 256K x 16

(2) 256K x 16

Note: Bank 0 is factory installed and is not configurable.

MISCELLANEOUS TECHNICAL NOTE

Note: The location of pin 1 is unidentified.