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486LC

ADVANCED INTEGRATION RESEARCH, INC.

486LC

Processor

80486DX

Processor Speed

25/33MHz

Chip Set

UMC

Max. Onboard DRAM

16MB

Cache

128/256KB

BIOS

AMI/Award/Phoenix

Dimensions

355mm x 304mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Turbo LED

J6

Speaker

J4

External 6V battery

JB2

Reset switch

J5

   

Note:No internal battery is provided, an external battery must be used.

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

CPU speed select high

J3

pins 1 & 2 closed

 

CPU speed select low

J3

pins 2 & 3 closed

Factory configured - do not alter

SW1/1

N/A

UNIX operating system not installed

SW1/2

Off

 

UNIX operating system installed

SW1/2

On

External cache memory disabled

SW1/3

Off

 

External cache memory enabled

SW1/3

On

Memory range 00C00000-00FFFFFF (12-16MB) cacheable

SW1/4

Off

 

Memory range 00C00000-00FFFFFF (12-16MB) non-cacheable

SW1/4

On

Monitor type select color

SW1/5

On

 

Monitor type select monochrome

SW1/5

Off

Onboard DRAM enabled

SW1/6

On

 

Onboard DRAM disabled

SW1/6

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

3MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

NONE

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

NONE

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

DRAM JUMPER CONFIGURATION

Size

JP1

JP2

JP3

1MB

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

2MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

3MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

4MB

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

4MB

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

8MB

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

12MB

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

16MB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

Note:Model 486LC may be equipped with 4 DIP sockets for a maximum of 128KB cache.

MEMORY CHIP SPEED JUMPER CONFIGURATION

25MHz

33MHz

JP4

80ns

60ns

pins 1 & 2 closed

100ns

80ns

pins 2 & 3 closed

BIOS CONFIGURATION

Size

JB1

SW1/7

27256

pins 1 & 2 closed

Off

27512

pins 2 & 3 closed

On