CHICONY, INC.

CH-486S-16/20/25/33H, CH-486-25/33H

Processor

80486SX/80487SX/80486DX

Processor Speed

16/20/25/33MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80487SX

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

CR1

Power LED & keylock

J20

External battery

J4

Turbo switch

JP6

Speaker

J15

Reset switch

SW1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

JP3

Closed

 

Monitor type select monochrome

JP3

Open

»

CMOS memory normal operation

JP5

pins 2 & 3 closed

 

CMOS memory clear

JP5

pins 1 & 2 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 TYPE CONFIGURATION

Type

JP1

JP2

JP4

80486SX

pins 2 & 3 closed

Open

Open

80487SX

pins 1 & 2 closed

Closed

pins 1 & 2 closed

80486DX

pins 1 & 2 closed

Closed

pins 2 & 3 closed