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





CH-486S-20B/25, CH-486-33G, CH-486-50G

CHICONY, INC.

CH-486S-20B/25, CH-486-33G, CH-486-50G

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J11

Turbo LED

JP11

Speaker

J21

Reset switch

SW1

Power LED & keylock

J22

Turbo switch

SW2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP1

pins 2 & 3 closed

 

CMOS memory clear

JP1

pins 1 & 2 closed

Monitor type select color

JP2

Closed

 

Monitor type select monochrome

JP2

Open

Factory configured - do not alter

JP7

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

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0-

TAG (U33)

TAG (U34)

64KB

(8) 8K x 8

(1) 64K x 1

(1) 8K x 8

256KB

(8) 32K x 8

(1) 64K x 1

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP9

JP10

JP12

64KB

pins 2 & 3 closed

Open

Open

256KB

pins 1 & 2 closed

Closed

Closed

CPU TYPE CONFIGURATION

Type

JP3

JP4

JP5

80486SX

pins 1 & 2 closed

Closed

pins 1 & 2 closed

80487SX

Open

Open

pins 2 & 3 closed

80486DX

pins 2 & 3 closed

Closed

pins 1 & 2 closed