...because we can't all be on the bleeding edge...





486DX/SX BOARD

SOYO COMPUTER CO., LTD.

486DX/SX BOARD

Processor

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

Processor Speed

20/25/33/40(internal)/50(internal)/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

64MB

Cache

None

BIOS

Award

Dimensions

330mm x 220mm

I/O Options

None

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J17

External battery

J20

Speaker

J18

Turbo switch

J21

Reset switch

J19

Turbo LED

J22

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

JP3

Open

 

Monitor type select color

JP3

Closed

CMOS memory normal operation

JP5

pins 1 & 2 closed

 

CMOS memory clear

JP5

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) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

CPU CONFIGURATION

Type

JP101

JP102

JP103

JP104

80486SX

Open

pins 2 & 3 closed

Open

pins 2 & 3 closed

80487SX

Closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

ODP486SX

Closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX

Closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX2

Closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

Note:Board may be factory configured with a surface mounted 80486SX.