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

[Image]

                                CONNECTIONS

  Purpose               Location      Purpose                Location

  ATX power               ATX         IDE interface 1           CN6
  connector

  AGP slot                AGP         IDE interface 2           CN7

  Turbo switch             C1         Floppy drive              CN8
                                      interface

  Power LED &              C2         Serial port 2             CN9
  keylock

  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             FRNT2/pins 2 &
                                      connector                  4

  PS/2 mouse port         CN3         Soft off power           FRNT3
                                      supply

  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       None           None           None
                      64

     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     (1) 16M x        None           None
                      64            64

     256MB        (1) 8M x 64   (1) 8M x 64    (1) 8M x 64   (1) 8M x 64

     256MB         (1) 32M x       None           None           None
                      64

     384MB         (1) 16M x     (1) 16M x      (1) 16M x        None
                      64            64             64

     512MB         (1) 16M x     (1) 16M x      (1) 16M x    (1) 16M x 64
                      64            64             64

     512MB         (1) 32M x     (1) 32M x        None           None
                      64            64

     768MB         (1) 32M x     (1) 32M x      (1) 32M x        None
                      64            64             64

     1024MB        (1) 32M x     (1) 32M x      (1) 32M x    (1) 32M x 64
                      64            64             64

            Note: Board accepts EDO & SDRAM memory.

                     CACHE CONFIGURATION

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

                            CPU SPEED SELECTION

    CPU       Clock    Multiplier     JP1/1    JP1/2     JP1/3     JP1/4
   speed     speed

  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