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J-7LXA, J-7LXA/L

J-MARK COMPUTER CORPORATION

J-7LXA, J-7LXA/L

Processor

Pentium II

Processor Speed

200/233/266/300MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

1GB (EDO & SDRAM supported)

Maximum Video Memory

None

Cache

256/512KB (located on Pentium II CPU)

BIOS

Award

Dimensions

305mm x 244mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), IR connector, USB connectors (2), ATX power connector, AGP slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

ATX power connector

ATX

IDE interface 1

CN6

AGP slot

AGP

IDE interface 2

CN7

Turbo switch

C1

Floppy drive interface

CN8

Power LED & keylock

C2

Serial port 2

CN9

Turbo LED

C3

CPU fan power

FAN

Reset switch

C4

Chassis fan power

FAN1

Speaker

C5

Chassis fan power

FAN2

Serial port 1

CN1

IDE interface LED

FRNT2/pins 1 & 3

Parallel port

CN2

Green PC connector

FRNT2/pins 2 & 4

PS/2 mouse port

CN3

Soft off power supply

FRNT3

USB connector 1

CN4

IR connector

IR1

USB connector 2

CN5

32-bit PCI slots

PC1 PC4

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Flash BIOS voltage select 12v

JERP1

Pins 1 & 2 closed

 

Flash BIOS voltage select 5v

JERP1

Pins 2 & 3 closed

CMOS memory normal operation

RTC1

Pins 2 & 3 closed

 

CMOS memory clear

RTC1

Pins 3 & 4 closed

DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

16MB

(1) 2M x 64

None

None

None

32MB

(1) 2M x 64

(1) 2M x 64

None

None

32MB

(1) 4M x 64

None

None

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 4M x 64

(1) 4M x 64

None

None

64MB

(1) 8M x 64

None

None

None

128MB

(1) 16M x 64

None

None

None

128MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

None

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

None

256MB

(1) 16M x 64

(1) 16M x 64

None

None

256MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

256MB

(1) 32M x 64

None

None

None

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

None

512MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

512MB

(1) 32M x 64

(1) 32M x 64

None

None

768MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

None

1024MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

Note: Board accepts EDO & SDRAM memory.

CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU.

CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

JP1/1

JP1/2

JP1/3

JP1/4

200MHz

66MHz

3.5x

On

On

On

Off

233MHz

66MHz

4x

On

On

Off

Off

266MHz

66MHz

4.5x

On

Off

On

On

300MHz

66MHz

5x

On

Off

Off

On