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EISA-486SI Motherboard Settings and Configuration







ASUS COMPUTER INTERNATIONAL

EISA-486SI

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

20/25/33/50/66(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

128MB

Cache

64/128/256KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

CON1

Speaker

CON4

Turbo switch

CON2

Power LED & keylock

CON5

Turbo LED

CON3

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

Closed

Factory configured - do not alter

JP2

pins 1 & 2 closed

Factory configured - do not alter

JP3

pins 2 & 3 closed

Factory configured - do not alter

JP4

pins 2 & 3 closed

Factory configured - do not alter

JP5

pins 2 & 3 closed

Factory configured - do not alter

JP6

pins 1 & 2 closed

Factory configured - do not alter

JP7

pins 2 & 3 closed

Factory configured - do not alter

JP8

pins 2 & 3 closed

CPU speed select <= 33MHz (internal)

JP9

pins 1 & 2 closed

 

CPU speed select 50MHz (internal)

JP9

pins 2 & 3 closed

Note: Jumpers JP1 - JP8 are absent from revisions 1.2 and later.

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

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

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U39)

TAG (U40)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

NONE

128KB

(4) 32K x 8

NONE

(1) 8K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

(1) 8K x 8

(1) 8K x 8

CACHE RESISTOR CONFIGURATION

Size

RP1/row 1

RP1/row 2

RP1/row 3

64KB

Installed

Not installed

Not installed

128KB

Not installed

Installed

Not installed

256KB

Not installed

Not installed

Installed

CPU TYPE CONFIGURATION

Type

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

80486SX

Off

Off

Off

Off

On

On

80487SX

Off

On

On

On

Off

On

80486DX

On

On

On

Off

Off

On

80486DX2

On

On

On

Off

Off

On










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