CHICONY, INC.

CH-48633C

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED & keylock

J3

External battery

J11

Speaker

J4

Turbo LED

JP1

Turbo switch

J5

Reset switch

S6

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

JP1

Closed

 

Monitor type select monochrome

JP1

Open

»

Factory configured - do not alter

JP9

Open

»

CPU speed select iOSC/2

JP10

pins 2 & 3 closed

 

CPU speed select iOSC/1

JP10

pins 1 & 2 closed

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

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U34,U36)

TAG (U40)

TAG (U41)

64KB

(4) 8K x 8

(4) 8K x 8

(2) 64K x 1

(1) 8K x 8

NONE

128KB

(4) 32K x 8

NONE

(2) 64K x 1

(1) 8K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

(2) 64K x 1

(1) 8K x 8

(1) 8K x 8

CACHE JUMPER CONFIGURATION

Size

JP2

JP4

JP5

JP7

JP8

64KB

Open

Open

2 & 3

Open

Open

128KB

Closed

Open

1 & 2

Open

Closed

256KB

Closed

Closed

2 & 3

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP11

JP12

JP13

80486SX

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

80487SX

pins 2 & 3 closed

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

80486DX

pins 1 & 2 closed

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Type

JP14

JP15

25MHz

Open

Open

33MHz

Closed

Open