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ADVANTAGE! 4000 SERIES 486 (234068-001)

AST RESEARCH, INC.

ADVANTAGE! 4000 SERIES 486 (234068-001)

Processor

80486SX/SL80486SX/ODP486/80486DX/SL80486DX/CX486DX2SL/ AM486DX2SL/80486DX2

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

36MB

Cache

None

BIOS

AST

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, serial port, riser slot, power to hard drive, power to floppy drive, power to CD-ROM, data/fax modem cabled

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

C20 (2-pin)

Power to hard drive connector

1245

Front panel LEDís

C20 (4-pin)

Floppy drive interface

1250

Power to CD-ROM power connector

CD-ROM PWR

IDE interface

1251

Serial port

CN1

Alternate power connector

1252

Parallel port

CN2

Front panel LED connector

1351

Power to floppy drive connector

FDD PWR

Cable to data/fax modem

1604

Chassis fan power

J28

Riser slot

SL1

Note: The locations of 1245, 1604, J28, FDD PWR & CD-ROM power are unidentified.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Ľ

Factory configured - do not alter

1101

N/A

Ľ

Factory configured - do not alter

1254

N/A

Ľ

Factory configured - do not alter

1604

N/A

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

4MB

4MB

None

None

8MB

4MB

(1) 1M x 32

None

12MB

4MB

(1) 1M x 32

(1) 1M x 32

20MB

4MB

(1) 4M x 32

(1) 4M x 32

36MB

4MB

(1) 4M x 32

(1) 4M x 32

Note: Bank 0 is factory installed and is not configurable. The location is unidentified.

CPU TYPE CONFIGURATION

Type

1201

1202

1203

1204

1205

80486SX

Open

2 & 3

Open

Open

Open

SL80486SX

Open

2 & 3

Closed

Closed

Open

ODP486

Open

1 & 2

Open

Open

Open

80486DX

Closed

1 & 2

Open

Open

Open

SL80486DX

Closed

1 & 2

Closed

Closed

Open

CX486DX2SL

Closed

1 & 2

Open

Open

Open

AM486DX2SL

Closed

1 & 2

Open

Open

Open

80486DX2

Closed

1 & 2

Open

Open

Open

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

1206

1207

1208

1209

1210

80486SX

Open

Open

Open

Open

Open

SL80486SX

Open

Closed

2 & 3

Open

Open

ODP486

1 & 2

Open

Open

Open

Open

80486DX

2 & 3

Open

Open

Open

Open

SL80486DX

2 & 3

Closed

2 & 3

Open

Open

CX486DX2SL

2 & 3

Open

2 & 3

Open

Open

AM486DX2SL

2 & 3

Open

1 & 2

Closed

Closed

80486DX2

2 & 3

Open

Open

Open

Open

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION (CONíT)

Type

1211

1212

1213

1301

1302

80486SX

Open

Open

Open

1 & 2

1 & 2

SL80486SX

Open

Open

Open

1 & 2

1 & 2

ODP486

Open

Open

Open

1 & 2

1 & 2

80486DX

Open

Open

Open

1 & 2

1 & 2

SL80486DX

Open

Open

Open

1 & 2

1 & 2

CX486DX2SL

Open

Closed

Closed

2 & 3

2 & 3

AM486DX2SL

Closed

Open

Open

2 & 3

2 & 3

80486DX2

Open

Open

Open

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

1171

1172

1173

25MHz

Open

Open

Closed

33MHz

Closed

Closed

Closed

50iMHz

Open

Open

Closed

66iMHz

Closed

Closed

Closed

CPU VOLTAGE CONFIGURATION

Voltage

1214

1215

1216

1217

 

3.3v

Open

Closed

Pins 2 & 3 closed

Closed

Ľ

5v

Closed

Open

Pins 2 & 3 closed

Open