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





CK-491K

CHICONY, INC.

CK-491K

Processor

CX486S/80486SX/80487SX/CX486DX/80486DX/CX486DX2/80486DX2/ 80486DX4/Pentium Overdrive

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

64MB

Cache

32/64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J3

Speaker

J7

Reset switch

J4

Power LED & keylock

J8

Turbo switch

J5

32-bit VESA local bus slots

SL1 - SL3

Turbo LED

J6

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Battery type select internal

J3

pins 2 & 3 closed

 

Battery type select external

J3

Closed

»

CMOS memory normal operation

JP1

Open

 

CMOS memory clear

JP1

Closed

»

Address strobe delay disabled

JP7

pins 1 & 2 closed

 

Address strobe delay enabled

JP7

pins 2 & 3 closed

»

VESA card type select normal

JP19

pins 1 & 2 closed

 

VESA card type select Weitek Power 9000 only

JP19

pins 2 & 3 closed

»

Cyrix C6 not installed

JP20

Open

 

Cyrix C6 installed

JP20

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

2MB

(1) 512K x 36

NONE

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 512K x 36

(1) 512K x 36

NONE

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 256K x 36

(1) 1M x 36

NONE

NONE

6MB

(1) 512K x 36

(1) 1M x 36

NONE

NONE

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

NONE

7MB

(1) 256K x 36

(1) 512K x 36

(1) 1M x 36

NONE

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

9MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

NONE

9MB

(1) 2M x 36

(1) 256K x 36

NONE

NONE

10MB

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

13MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 256K x 36

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) 4M x 36

(1) 256K x 36

NONE

NONE

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

NONE

18MB

(1) 4M x 36

(1) 512K x 36

NONE

NONE

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

NONE

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

(1) 8M x 36

NONE

NONE

NONE

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

NONE

33MB

(1) 8M x 36

(1) 256K x 36

NONE

NONE

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

34MB

(1) 8M x 36

(1) 512K x 36

NONE

NONE

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

36MB

(1) 8M x 36

(1) 1M x 36

NONE

NONE

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

NONE

NONE

64MB

(1) 16M x 36

NONE

NONE

NONE

DRAM JUMPER CONFIGURATION

Size

JP21

JP22

Double sided SIMM

pins 1 & 2 closed

pins 1 & 2 closed

16MB x 36 SIMM

pins 2 & 3 closed

pins 2 & 3 closed

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 or (1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP2

JP3

JP4

JP5

JP6

32KB

2 & 3

2 & 3

Open

Open

Open

64KB

1 & 2

1 & 2

Open

Open

Closed

128KB

2 & 3

2 & 3

Open

Closed

Closed

256KB

1 & 2

1 & 2

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP15

JP16

JP17

CX486S

pins 2 & 3 closed

Open

Open

80486SX

pins 2 & 3 closed

Open

Open

80487SX

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Open

CX486DX

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Open

80486DX

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Open

CX486DX2

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Closed

80486DX2

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Open

80486DX4

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Open

Pentium Overdrive

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Open

CPU SPEED CONFIGURATION

Speed

JP8

JP9

JP10

20MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

25MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

33MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

40MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

50iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

50MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

66iMHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

75iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

100iMHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION (80486DX4 ONLY)

Speed

JP18

2x

pins 2 & 3 closed

2.5x

pins 1 & 2 closed

3x

Open

CPU VOLTAGE CONFIGURATION

Voltage

P1

P2

P3

3.3v

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

5v

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

VESA WAIT STATE CONFIGURATION

Wait states

JP13

1 wait state

Closed

2 wait states

Open

BUS SPEED CONFIGURATION

CPU speed

JP14

<= 33MHz

Open

> 33MHz

Closed