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GA-486PA

GIGA-BYTE TECHNOLOGY CO., LTD.

GA-486PA

Processor

80486SX/80486DX/80486DX2

Processor Speed

16/20/25/33/50(internal)/50/66(internal)MHz

Chip Set

OPTi

Max. Onboard DRAM

32MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J1

Turbo switch

J4

Reset switch

J2

Turbo LED

J5

Speaker

J3

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

J23

Closed

 

Monitor type select monochrome

J23

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(2) 32K x 1

128KB

(4) 32K x 8

NONE

(2) 32K x 1

256KB

(4) 32K x 8

(4) 32K x 8

(2) 32K x 1

512KB

(4) 128K x 8

NONE

(2) 32K x 1

CACHE JUMPER CONFIGURATION

Size

JP8

JP17

JP18

JP19

64KB

pins 2 & 3 closed

Open

Open

Open

128KB

pins 1 & 2 closed

Closed

Open

Open

256KB

pins 2 & 3 closed

Closed

Closed

Open

512KB

pins 1 & 2 closed

Closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

J7

80486SX

pins 1 & 2 closed

80486DX

pins 2 & 3 closed

80486DX2

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

J6

16MHz

Closed

20MHz

Closed

25MHz

Open

33MHz

Open

50iMHz

Open

50MHz

Open

66iMHz

Open