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CH-471A (VER. 3)

CHICONY, INC.

CH-471A (VER. 3)

Processor

CX486S/80486SX/SL80486SX/80486SX2/SL80486SX2/UMCU5S/ CX486DX/AM486DX/80486DX/SL80486DX/CX486DX2/CX486DX2V/ AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4/P24D/ P24T/CXM9

Processor Speed

20/25/33/40/50(internal)/50/66(internal)/75(internal)/83(internal)/ 100(internal)MHz

Chip Set

SIS

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

32/64/128/256/512/1024KB

BIOS

Award

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connectors (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J3

Speaker

J8

Green PC connector

J4

External battery

JP19

Turbo switch

J5

Green PC connector

JP38

Turbo LED

J6

Green PC connector

JP39

Power LED & keylock

J7

32-bit VESA local bus slots

PC1 - PC3

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Clock down control by STOPCLK control (80486DX4)

JP6

Pins 1 & 2 closed

 

Clock down control by SMOUT0 control (all other CPUs)

JP6

Pins 2 & 3 closed

CMOS memory normal operation

JP7

Pins 1 & 2 closed

 

CMOS memory clear

JP7

Pins 2 & 3 closed

 

Monitor type select color

JP45

Closed

 

Monitor type select monochrome

JP45

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

None

None

None

2MB

(1) 512K x 36

None

None

None

2MB

(1) 256K x 36

(1) 256K x 36

None

None

4MB

(1) 1M x 36

None

None

None

4MB

(1) 512K x 36

(1) 512K x 36

None

None

5MB

(1) 256K x 36

(1) 1M x 36

None

None

6MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

None

6MB

(1) 512K x 36

(1) 1M x 36

None

None

8MB

(1) 256K x 36

(1) 256K x 36

(1) 512K x 36

(1) 1M x 36

8MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

8MB

(1) 2M x 36

None

None

None

10MB

(1) 256K x 36

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

18MB

(1) 256K x 36

(1) 256K x 36

(1) 4M x 36

None

12MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 4M x 36

None

None

None

17MB

(1) 256K x 36

(1) 4M x 36

None

None

18MB

(1) 512K x 36

(1) 4M x 36

None

None

20MB

(1) 512K x 36

(1) 512K x 36

(1) 4M x 36

None

20MB

(1) 1M x 36

(1) 4M x 36

None

None

24MB

(1) 512K x 36

(1) 512K x 36

(1) 1M x 36

(1) 4M x 36

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

None

DRAM CONFIGURATION (CONT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 8M x 36

None

None

None

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

None

36MB

(1) 1M x 36

(1) 8M x 36

None

None

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

40MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

48MB

(1) 4M x 36

(1) 8M x 36

None

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

None

64MB

(1) 16M x 36

None

None

None

64MB

(1) 8M x 36

(1) 8M x 36

None

None

68MB

(1) 1M x 36

(1) 16M x 36

None

None

68MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

None

72MB

(1) 1M x 36

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

72MB

(1) 1M x 36

(1) 1M x 36

(1) 16M x 36

None

80MB

(1) 4M x 36

(1) 16M x 36

None

None

80MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

None

96MB

(1) 4M x 36

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

None

96MB

(1) 4M x 36

(1) 4M x 36

(1) 16M x 36

None

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 16M x 36

(1) 16M x 36

None

None

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

32KB

(4) 8K x 8

None

(1) 8K x 8

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) 16K x 8

512KB

(4) 128K x 8

None

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 64K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

JP4

JP5

JP14

JP16

32KB

1 & 2, 3 & 4

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

64KB

2 & 3, 4 & 5

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

128KB

1 & 2, 3 & 4

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

256KB

2 & 3, 4 & 5

1 & 2

2 & 3

2 & 3

2 & 3

1 & 2

2 & 3

512KB

1 & 2, 3 & 4

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

1MB

2 & 3, 4 & 5

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION

Speed

JP8

JP12

JP13

JP17

20MHz

Open

Open

Open

Pins 1 & 2 closed

25MHz

Open

Open

Closed

Pins 1 & 2 closed

33MHz

Closed

Closed

Closed

Pins 1 & 2 closed

40MHz

Open

Closed

Closed

Pins 1 & 2 closed

50iMHz

Open

Open

Closed

Pins 1 & 2 closed

50MHz

Closed

Open

Open

Pins 2 & 3 closed

66iMHz

Closed

Closed

Closed

Pins 1 & 2 closed

75iMHz

Open

Open

Closed

Pins 1 & 2 closed

83iMHz

Closed

Closed

Closed

Pins 1 & 2 closed

100iMHz

Closed

Closed

Closed

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

JP10

JP11

JP18

CX486S

2 & 3

1 & 2

Open

80486SX

1 & 2

2 & 3

Open

SL80486SX

1 & 2

2 & 3

Open

80486SX2

1 & 2

2 & 3

Open

SL80486SX2

1 & 2

2 & 3

Open

UMC U5S

2 & 3

1 & 2

1 & 2, 3 & 4, 5 & 6

CX486DX

2 & 3

1 & 2

Open

AM486DX

1 & 2

2 & 3

Open

80486DX

1 & 2

2 & 3

Open

SL80486DX

1 & 2

2 & 3

Open

CX486DX2

2 & 3

1 & 2

Open

CX486DX2-V

2 & 3

1 & 2

Open

AM486DX2

1 & 2

2 & 3

Open

80486DX2

1 & 2

2 & 3

Open

SL80486DX2

1 & 2

2 & 3

Open

AM486DX4

1 & 2

2 & 3

Open

80486DX4

1 & 2

2 & 3

Open

P24D

1 & 2

1 & 2

Open

P24T

1 & 2

1 & 2

Open

CX M9

2 & 3

1 & 2

Open

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CONT)

Type

JP20

JP25

CX486S

Open

Open

80486SX

Open

Open

SL80486SX

Open

1 & 2, 3 & 4, 9 & 10, 11 & 12

80486SX2

Open

Open

SL80486SX2

Open

1 & 2, 3 & 4, 9 & 10, 11 & 12

UMC U5S

Open

Open

CX486DX

1 & 2

Open

AM486DX

1 & 2

Open

80486DX

1 & 2

Open

SL80486DX

1 & 2

1 & 2, 3 & 4, 9 & 10, 11 & 12

CX486DX2

1 & 2

Open

CX486DX2-V

1 & 2

Open

AM486DX2

1 & 2

Open

80486DX2

1 & 2

Open

SL80486DX2

1 & 2

1 & 2, 3 & 4, 9 & 10, 11 & 12

AM486DX4

1 & 2

Open

80486DX4

1 & 2

1 & 2, 3 & 4, 9 & 10, 11 & 12

P24D

1 & 2

1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 13 & 14, 15 & 16

P24T

1 & 2

1 & 2, 3 & 4, 9 & 10

CX M9

1 & 2

1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 15 & 16

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CONT)

Type

JP37

JP41

CX486S

1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10 11 & 12

2 & 3

80486SX

Open

2 & 3

SL80486SX

Open

2 & 3

80486SX2

Open

2 & 3

SL80486SX2

Open

2 & 3

UMC U5S

Open

2 & 3

CX486DX

1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12

1 & 2, 3 & 4

AM486DX

Open

1 & 2, 3 & 4

80486DX

Open

1 & 2, 3 & 4

SL80486DX

Open

1 & 2, 3 & 4

CX486DX2

1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12

1 & 2, 3 & 4

CX486DX2-V

1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12

1 & 2, 3 & 4

AM486DX2

Open

1 & 2, 3 & 4

80486DX2

Open

1 & 2, 3 & 4

SL80486DX2

Open

1 & 2, 3 & 4

CPU TYPE SELECTION (CONT)

Type

JP37

JP41

AM486DX4

Open

1 & 2, 3 & 4

80486DX4

Open

1 & 2, 3 & 4

P24D

Open

1 & 2, 3 & 4

P24T

Open

1 & 2, 3 & 4

CX M9

5 & 6

1 & 2, 3 & 4

Note: Pins designated should be in the closed position.

CPU MULTIPLIER SELECTION (DX4 & CX M9 ONLY)

Multiplier

JP21

2x

Pins 2 & 3 closed

2.5x

Pins 1 & 2 closed

3x

Open

CPU VOLTAGE SELECTION

Voltage

JP26

JP32

3.15v

Pins 1 & 2 closed

Pins 1 & 2, 4 & 5, 7 & 8 closed

3.3v

Pins 3 & 4 closed

Pins 1 & 2, 4 & 5, 7 & 8 closed

3.45v

Pins 5 & 6 closed

Pins 1 & 2, 4 & 5, 7 & 8 closed

3.6v

Pins 7 & 8 closed

Pins 1 & 2, 4 & 5, 7 & 8 closed

4v

Pins 9 & 10 closed

Pins 1 & 2, 4 & 5, 7 & 8 closed

5v

N/A

Pins 2 & 3, 5 & 6, 8 & 9 closed

VL BUS WAIT STATE SELECTION

Setting

JP44

0

Pins 1 & 2 closed

1

Pins 2 & 3 closed

VL BUS SPEED SELECTION

Speed

JP47

<= 33MHz

Pins 1 & 2 closed

>33 MHz

Pins 2 & 3 closed