AST RESEARCH, INC.

ADVANTAGE! PRO 486 (202560-000, 102)

Processor

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

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

64/256KB

BIOS

Unidentified

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

IDE interface

J22

Parallel port

CN2

Floppy drive interface

J24

Serial port

CN3

Speaker

J27

Serial port

CN4

Chassis fan power

J28

PS/2 mouse port

CN5

Front panel connector

J29

8514 video pass through connector

J19

   

Note: The location of J27 is unidentified.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

E4

Closed

 

Monitor type select monochrome

E4

Open

»

On board video enabled

E5

Closed

 

On board video disabled

E5

Open

»

Password enabled

E6

Open

 

Password disabled

E6

Closed

»

Parallel port IRQ select IRQ7

E12

pins 1 & 2 closed

 

Parallel port IRQ select IRQ5

E12

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 32

NONE

NONE

NONE

2MB

(1) 256K x 32

(1) 256K x 32

NONE

NONE

3MB

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

NONE

4MB

(1) 1M x 32

NONE

NONE

NONE

4MB

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

5MB

(1) 1M x 32

(1) 256K x 32

NONE

NONE

6MB

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

NONE

7MB

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

8MB

(1) 1M x 32

(1) 1M x 32

NONE

NONE

9MB

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

NONE

10MB

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

12MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

NONE

13MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

16MB

(1) 4M x 32

NONE

NONE

NONE

16MB

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

17MB

(1) 4M x 32

(1) 256K x 32

NONE

NONE

18MB

(1) 4M x 32

(1) 256K x 32

(1) 256K x 32

NONE

19MB

(1) 4M x 32

(1) 256K x 32

(1) 256K x 32

(1) 256K x 32

20MB

(1) 4M x 32

(1) 1M x 32

NONE

NONE

21MB

(1) 4M x 32

(1) 1M x 32

(1) 256K x 32

NONE

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

22MB

(1) 4M x 32

(1) 1M x 32

(1) 256K x 32

(1) 256K x 32

24MB

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

NONE

25MB

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

(1) 256K x 32

28MB

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

(1) 1M x 32

32MB

(1) 4M x 32

(1) 4M x 32

NONE

NONE

33MB

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

NONE

34MB

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

(1) 256K x 32

36MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

NONE

37MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

(1) 256K x 32

40MB

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

(1) 1M x 32

48MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

NONE

49MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 256K x 32

52MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 1M x 32

64MB

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

(1) 4M x 32

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

E1

E2

E3

None

Open

Open

Open

64KB

Open

Open

Open

256KB

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

E11

E13

E14

E15

E16

E17

80486SX(PQFP)

Open

Open

1 & 2

1 & 2

1 & 2

1 & 2

80486SX(PGA)

Closed

Open

1 & 2

1 & 2

1 & 2

1 & 2

80487SX

Closed

Closed

1 & 2

1 & 2

2 & 3

1 & 2

ODP486SX

Closed

Closed

1 & 2

1 & 2

2 & 3

1 & 2

80486DX

Closed

Closed

2 & 3

1 & 2

2 & 3

1 & 2

80486DX2

Closed

Closed

2 & 3

1 & 2

2 & 3

1 & 2

P24T

Closed

Closed

2 & 3

2 & 3

2 & 3

Open

Note: Pins designated should be in the closed position. The location of the PQFP is unidentified.

CPU SPEED CONFIGURATION

Speed

E9

E10

25MHz

Closed

Closed

33MHz

Open

Closed

50iMHz

Closed

Closed

66iMHz

Open

Closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

(4) 256K x 4

NONE

1MB

(4) 256K x 4

(4) 256K x 4