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J-571B Motherboard Settings and Configuration






J-MARK COMPUTER CORPORATION

J-571B

Device Type

Mainboard

Processor

CX 6X86/IBM 6X86/CX 686MX/AM K5/AM K6/Pentium

Processor Speed

75/90/100/120/133/150/166/200/233/266/300MHz

Chip Set

SIS

Video Chip Set

None

Maximum Onboard Memory

256MB (EDO & SDRAM supported)

Maximum Video Memory

None

Cache

512KB

BIOS

Award

Dimensions

220mm x 220mm

I/O Options

32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connectors (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

C1

PS/2 mouse interface

J4

Reset switch

C2

Serial port 1

J6

Turbo LED

C3

Parallel port

J7

IDE interface LED

C4

Serial port 2

J8

Power LED & keylock

C5

USB connector 1

JP1

Turbo switch/green PC connector

C6

USB connector 2

JP2

IDE interface 2

CN1

Floppy drive interface

JP4

IDE interface 1

CN2

CPU fan power

JP14

IR connector

IR1

32-bit PCI slots

PC1 PC3

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Green PC connector

C6

Pins 1 & 2 closed

 

Turbo switch

C6

Pins 2 & 3 closed

 

Flash BIOS voltage select 12v

JP3

Pins 2 & 3 closed

 

Flash BIOS voltage select 5v

JP3

Pins 1 & 2 closed

CMOS memory normal operation

JP7

Pins 1 & 2 closed

 

CMOS memory clear

JP7

Pins 2 & 3 closed

SIMM CONFIGURATION

Size

Bank 0

8MB

(2) 1M x 36

16MB

(2) 2M x 36

32MB

(2) 4M x 36

64MB

(2) 8M x 36

128MB

(2) 16M x 36

256MB

(2) 32M x 36

Note: Board accepts EDO memory.

DIMM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(1) 1M x 64

None

16MB

(1) 2M x 64

None

16MB

(1) 1M x 64

(1) 1M x 64

24MB

(1) 2M x 64

(1) 1M x 64

32MB

(1) 4M x 64

None

32MB

(1) 2M x 64

(1) 2M x 64

40MB

(1) 4M x 64

(1) 1M x 64

48MB

(1) 4M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

64MB

(1) 4M x 64

(1) 4M x 64

72MB

(1) 8M x 64

(1) 1M x 64

80MB

(1) 8M x 64

(1) 2M x 64

96MB

(1) 8M x 64

(1) 4M x 64

128MB

(1) 16M x 64

None

128MB

(1) 8M x 64

(1) 8M x 64

136MB

(1) 16M x 64

(1) 1M x 64

144MB

(1) 16M x 64

(1) 2M x 64

160MB

(1) 16M x 64

(1) 4M x 64

192MB

(1) 16M x 64

(1) 8M x 64

256MB

(1) 16M x 64

(1) 16M x 64

Note: Board accepts SDRAM memory.

CACHE CONFIGURATION

Size

Bank 0

TAG

512KB

(1) 64K x 64

(1) 32K x 32

CPU SPEED SELECTION (CX 6X86)

CPU speed

Clock speed

Multiplier

JP9/1

JP9/2

JP9/3

JP9/4

JP9/5

JP9/6

120MHz

50MHz

2x

On

Off

Off

On

On

On

133MHz

55MHz

2x

On

Off

Off

Off

On

On

150MHz

60MHz

2x

On

Off

Off

On

On

Off

166MHz

66MHz

2x

On

Off

Off

On

Off

On

200MHz

75MHz

2x

On

Off

Off

Off

On

Off

CPU SPEED SELECTION (IBM 6X86)

CPU speed

Clock speed

Multiplier

JP9/1

JP9/2

JP9/3

JP9/4

JP9/5

JP9/6

120MHz

50MHz

2x

On

Off

Off

On

On

On

133MHz

55MHz

2x

On

Off

Off

Off

On

On

150MHz

60MHz

2x

On

Off

Off

On

On

Off

166MHz

66MHz

2x

On

Off

Off

On

Off

On

200MHz

75MHz

2x

On

Off

Off

Off

On

Off

CPU SPEED SELECTION (CX 6X86MX)

CPU speed

Clock speed

Multiplier

JP9/1

JP9/2

JP9/3

JP9/4

JP9/5

JP9/6

166MHz

60MHz

2.5x

On

On

Off

On

On

Off

166MHz

66MHz

2.5x

On

On

Off

On

Off

On

200MHz

75MHz

2x

On

Off

Off

Off

On

Off

233MHz

66MHz

3x

Off

On

Off

On

Off

On

CPU SPEED SELECTION (AM K5)

CPU speed

Clock speed

Multiplier

JP9/1

JP9/2

JP9/3

JP9/4

JP9/5

JP9/6

90MHz

60MHz

1.5x

Off

Off

Off

On

On

Off

100MHz

66MHz

1.5x

Off

Off

Off

On

Off

On

133MHz

66MHz

1.5x

Off

Off

Off

On

Off

On

166MHz

66MHz

2.5x

On

On

Off

On

Off

On

CPU SPEED SELECTION (AM K6)

CPU speed

Clock speed

Multiplier

JP9/1

JP9/2

JP9/3

JP9/4

JP9/5

JP9/6

166MHz

66MHz

2.5x

On

On

Off

On

Off

On

200MHz

66MHz

3x

Off

On

Off

On

Off

On

266MHz

66MHz

4x

On

Off

On

On

Off

On

300MHz

66MHz

4.5x

On

On

On

On

Off

On

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

JP9/1

JP9/2

JP9/3

JP9/4

JP9/5

JP9/6

75MHz

50MHz

1.5x

Off

Off

Off

On

On

On

90MHz

60MHz

1.5x

Off

Off

Off

On

On

Off

100MHz

66MHz

1.5x

Off

Off

Off

On

Off

On

120MHz

60MHz

2x

On

Off

Off

On

On

Off

133MHz

66MHz

2x

On

Off

Off

On

Off

On

150MHz

60MHz

2.5x

On

On

Off

On

On

Off

166MHz

66MHz

2.5x

On

On

Off

On

Off

On

200MHz

66MHz

3x

Off

On

Off

On

Off

On

CPU SPEED SELECTION (INTEL MMX)

CPU speed

Clock speed

Multiplier

JP9/1

JP9/2

JP9/3

JP9/4

JP9/5

JP9/6

166MHz

66MHz

2.5x

On

On

Off

On

Off

On

200MHz

66MHz

3x

Off

On

Off

On

Off

On

233MHz

66MHz

3.5x

Off

Off

Off

On

Off

On

CPU VOLTAGE SELECTION (SINGLE)

Voltage

JP13

3.3v

Pins 1 & 2 closed

 

3.45v

Pins 3 & 4 closed

CPU VOLTAGE SELECTION (DUAL)

Voltage

JP11/pins 1 & 2

JP11/pins 3 & 4

JP11/pins 5 & 6

JP11/pins 7 & 8

JP11/pins 9 & 10

JP11/pins 11 & 12

JP11/pins 13 & 14

2.1v

Open

Open

Open

Open

Open

Open

Closed

2.8v

Open

Open

Open

Open

Open

Closed

Open

2.9v

Open

Open

Open

Open

Closed

Open

Open

3.2v

Open

Open

Open

Closed

Open

Open

Open

3.3v

Open

Open

Closed

Open

Open

Open

Open

3.45v

Open

Closed

Open

Open

Open

Open

Open

3.52v

Closed

Open

Open

Open

Open

Open

Open








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