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CH-486

CHICONY, INC.

CH-486

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33/50MHz

Chip Set

OPTI

Maximum Onboard Memory

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

None

CONNECTIONS

Function

Label

Function

Label

External battery

J1

Power LED & keylock

JP18

Speaker

J17

Reset switch

sw1

Turbo LED

JP11

Turbo switch

SW2

USER CONFIGURABLE SETTINGS

Setting

Label

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

Jumper information unavailable

JP5

N/A

DRAM

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) 1M x 9

(4) 4M x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE SIZE

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER

Size

JP3

JP4

JP6

JP7

64KB

Pins 2 & 3 closed

Open

Open

Open

128KB

Pins 1 & 2 closed

Closed

Closed

Open

256KB

Pins 2 & 3 closed

Closed

Closed

Closed

CPU TYPE

Setting

JP8

JP9

JP10

80486SX

Pins 1 & 2 closed

Closed

Pins 1 & 2 closed

80487SX

Pins 2 & 3 closed

Open

Open

80486DX

Pins 1 & 2 closed

Closed

Pins 2 & 3 closed

CPU SPEED

Setting

JP12

20MHz

Pins 2 & 3 closed

25MHz

Pins 2 & 3 closed

33MHz

Pins 2 & 3 closed

50MHz

Pins 1 & 2 closed