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486US

ADVANCED INTEGRATION RESEARCH, INC.

486US

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33/50MHz

Chip Set

UMC

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI/Phoenix

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Turbo switch

J6

Power LED & keylock

J3

Turbo LED

J7

Speaker

J4

32-bit external memory card

JME1

Reset switch

J5

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP10

Closed

 

Monitor type select monochrome

JP10

Open

CMOS memory normal operation

JP19

pins 1 & 2 closed

 

CMOS memory clear

JP19

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

64KB

(4) 8K x 8

(4) 8K x 8

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP13

JP14

JP16

JP17

JP18

64KB

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

128KB

2 & 3

1 & 2

2 & 3

2 & 3

1 & 2

256KB

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP3

JP8

80486SX

Open

pins 2 & 3 closed

pins 3 & 4 closed

Open

80487SX

Closed

pins 1 & 2 closed

pins 2 & 3 closed

Open

80486DX

Closed

pins 1 & 2 closed

pins 1 & 2 closed

Open