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J-TX98 R2 Motherboard Settings and Configuration






J-MARK COMPUTER CORPORATION

J-TX98 R2

Device Type

Mainboard

Processor

CX 6X86/IBM 6X86/CX 686MX/IBM 6X86MX/AM K5/

AM K6/Pentium/Pentium MMX

Processor Speed

75/90/100/120/133/150/166/180/200/233/266/300MHz

Chip Set

SIS 5598

Video Chip Set

SIS

Maximum Onboard Memory

384MB (EDO & SDRAM supported) Unified Memory Architecture (UMA)

Cache

256/512KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

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

CONNECTIONS

Purpose

Location

Purpose

Location

ATX power connector

ATX

Floppy drive interface

CN3

Turbo LED

C1

Parallel port

CN4

Reset switch

C2

IDE interface 2

CN5

Speaker

C3

IDE interface 1

CN6

Turbo switch

C4

IR connector

IR1

Power LED & keylock

C5

PS/2 mouse interface

J1

IDE interface LED

C6

VGA interface

J5

Soft off power supply

C7

CPU fan power

J9

Serial port 1

CN1

32-bit PCI slots

PC1 – PC3

Serial port 2

CN2

USB connector

USB

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

JP11

Unidentified

»

Factory configured - do not alter

JP12

Unidentified

»

Factory configured - do not alter

JP14

Unidentified

»

CMOS memory normal operation

JP17

Pins 1 & 2 closed

 

CMOS memory clear

JP17

Pins 2 & 3 closed

 

Flash BIOS voltage select 12v

JP19

Pins 1 & 2 closed

 

Flash BIOS voltage select 5v

JP19

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

Note: Board accepts EDO memory.

DIMM CONFIGURATION

Size

Bank 1

Bank 2

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

DIMM CONFIGURATION (CON’T)

Size

Bank 1

Bank 2

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

256KB

(1) 32K x 64

(1) 32K x 8

512KB

(1) 64K x 64

(1) 32K x 8

CPU SPEED SELECTION (CX 6X86)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

120MHz

50MHz

2x

On

On

On

On

Off

Off

133MHz

55MHz

2x

On

On

Off

On

Off

Off

150MHz

60MHz

2x

Off

On

On

On

Off

Off

166MHz

66MHz

2x

On

Off

On

On

Off

Off

CPU SPEED SELECTION (IBM 6X86)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

120MHz

50MHz

2x

On

On

On

On

Off

Off

133MHz

55MHz

2x

On

On

Off

On

Off

Off

150MHz

60MHz

2x

Off

On

On

On

Off

Off

166MHz

66MHz

2x

On

Off

On

On

Off

Off

CPU SPEED SELECTION (CX 6X86MX)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

166MHz

60MHz

2.5x

Off

On

On

On

On

Off

166MHz

66MHz

2.5x

On

Off

On

On

On

Off

233MHz

66MHz

3x

On

Off

On

Off

On

Off

CPU SPEED SELECTION (IBM 6X86MX)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

166MHz

60MHz

2.5x

Off

On

On

On

On

Off

166MHz

66MHz

2.5x

On

Off

On

On

On

Off

233MHz

66MHz

3x

On

Off

On

Off

On

Off

CPU SPEED SELECTION (IDT C6)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

150MHz

50MHz

3x

On

On

On

Off

On

Off

180MHz

60MHz

3x

Off

On

On

Off

On

Off

200MHz

66MHz

3x

On

Off

On

Off

On

Off

CPU SPEED SELECTION (AM K5)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

75MHz

50MHz

1.5x

On

On

On

Off

Off

Off

90MHz

60MHz

1.5x

Off

On

On

Off

Off

Off

100MHz

66MHz

1.5x

On

Off

On

Off

Off

Off

133MHz

66MHz

1.5x

On

Off

On

Off

Off

Off

166MHz

66MHz

2.5x

On

Off

On

On

On

Off

CPU SPEED SELECTION (AM K6)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

166MHz

66MHz

2.5x

On

Off

On

On

On

Off

200MHz

66MHz

3x

On

Off

On

Off

On

Off

233MHz

66MHz

3.5x

On

Off

On

Off

Off

Off

266MHz

66MHz

4x

On

Off

On

On

Off

On

300MHz

66MHz

4.5x

On

Off

On

On

On

On

CPU SPEED SELECTION (INTEL)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

75MHz

50MHz

1.5x

On

On

On

Off

Off

Off

90MHz

60MHz

1.5x

Off

On

On

Off

Off

Off

100MHz

66MHz

1.5x

On

Off

On

Off

Off

Off

120MHz

60MHz

2x

Off

On

On

On

Off

Off

133MHz

66MHz

2x

On

Off

On

On

Off

Off

150MHz

60MHz

2.5x

Off

On

On

On

On

Off

166MHz

66MHz

2.5x

On

Off

On

On

On

Off

200MHz

66MHz

3x

On

Off

On

Off

On

Off

CPU SPEED SELECTION (INTEL MMX)

CPU speed

Clock speed

Multiplier

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

166MHz

66MHz

2.5x

On

Off

On

On

On

Off

200MHz

66MHz

3x

On

Off

On

Off

On

Off

233MHz

66MHz

3.5x

On

Off

On

Off

Off

Off

CPU VOLTAGE SELECTION

Voltage

JP15/pins 1 & 2

JP15/pins 3 & 4

JP15/pins 5 & 6

JP15/pins 7 & 8

2.2v

Open

Closed

Open

Open

2.8v

Open

Open

Open

Closed

2.9v

Closed

Open

Open

Closed

3.2v

Open

Open

Closed

Closed

3.45v

Open

Closed

Closed

Closed

3.52v

Closed

Closed

Closed

Closed

ON BOARD VIDEO SELECTION

Setting

JP1

JP2

JP10

Enabled

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Disabled

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed








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