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CH-48633C

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