
A-TREND TECHNOLOGY CORPORATION

ATC-6120 (VER. 1.00)

Device Type                Mainboard
Processor                  Pentium II
Processor Speed            233/266/300MHz
Chip Set                   Intel 440LX
Maximum Onboard Memory     768MB (EDO & SDRAM supported)
Cache                      256/512KB (located on the Pentium II CPU)
BIOS                       Award
Dimensions                 305mm x 210mm
I/O Options                32-bit PCI slots (3), floppy drive interface,
                           IDE interfaces (2), parallel port, PS/2 mouse
                           port, serial ports (2), IR connector, USB
                           connector (2), ATX power connector, AGP slot

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  AGP slot                  AGP        CPU fan power            FAN3

  ATX power                 ATX        Chassis fan power        FAN2
  connector

  IR connector              CN1        Reset switch         JP1/pins 1 &
                                                                 2

  IDE interface 1           CN2        Soft off power       JP1/pins 4 &
                                       supply                    5

  IDE interface 2           CN3        Turbo LED            JP1/pins 7 &
                                                                 8

  Parallel port             CN5        IDE interface LED    JP1/pins 10 &
                                                                 11

  Floppy drive              CN4        Speaker              JP1/pins 13 -
  interface                                                      16

  Serial port 2             CN6        Power LED &          JP1/pins 19 -
                                       keylock                   22

  PS/2 mouse port           CN7        PS on connector      JP1/pins 23 &
                                                                 24

  USB connectors            CN8        32-bit PCI slots      PC1 - PC4

  CPU fan power            FAN1

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     CMOS memory normal operation          JP2        Pins 1 & 2 closed

      CMOS memory clear                     JP2        Pins 2 & 3 closed

     Factory configured - do not           JP3        Pins 1 & 2 closed
      alter

     Factory configured - do not           JP4        Pins 2 & 3 closed
      alter

     Factory configured - do not           JP5          Unidentified
      alter

                        DIMM CONFIGURATION

         Size             Bank 0         Bank 1         Bank 2

         8MB            (1) 1M x 64       None           None

         16MB           (1) 2M x 64       None           None

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

         24MB           (1) 2M x 64    (1) 1M x 64       None

         24MB           (1) 1M x 64    (1) 1M x 64    (1) 1M x 64

         32MB           (1) 4M x 64       None           None

         32MB           (1) 2M x 64    (1) 2M x 64       None

         32MB           (1) 2M x 64    (1) 1M x 64    (1) 1M x 64

         40MB           (1) 4M x 64    (1) 1M x 64       None

         48MB           (1) 4M x 64    (1) 2M x 64       None

         48MB           (1) 2M x 64    (1) 2M x 64    (1) 2M x 64

         48MB           (1) 4M x 64    (1) 1M x 64    (1) 1M x 64

                      DIMM CONFIGURATION (CONT)

         Size               Bank 0          Bank 1          Bank 2

         64MB             (1) 8M x 64        None            None

         64MB             (1) 4M x 64     (1) 4M x 64        None

         64MB             (1) 4M x 64     (1) 2M x 64    (1) 2M x 64

         72MB             (1) 8M x 64     (1) 1M x 64        None

         80MB             (1) 8M x 64     (1) 2M x 64        None

         80MB             (1) 8M x 64     (1) 1M x 64    (1) 1M x 64

         96MB             (1) 8M x 64     (1) 4M x 64        None

         96MB             (1) 4M x 64     (1) 4M x 64    (1) 4M x 64

         96MB             (1) 8M x 64     (1) 2M x 64    (1) 2M x 64

         128MB           (1) 16M x 64        None            None

         128MB            (1) 8M x 64     (1) 8M x 64        None

         128MB            (1) 8M x 64     (1) 4M x 64    (1) 4M x 64

         136MB           (1) 16M x 64     (1) 1M x 64        None

         144MB           (1) 16M x 64     (1) 2M x 64        None

         144MB           (1) 16M x 64     (1) 1M x 64    (1) 1M x 64

         160MB           (1) 16M x 64     (1) 4M x 64        None

         160MB           (1) 16M x 64     (1) 2M x 64    (1) 2M x 64

         192MB           (1) 16M x 64     (1) 8M x 64        None

         192MB            (1) 8M x 64     (1) 8M x 64    (1) 8M x 64

         192MB           (1) 16M x 64     (1) 4M x 64    (1) 4M x 64

         256MB           (1) 16M x 64     (1) 16M x 64       None

         256MB           (1) 16M x 64     (1) 8M x 64    (1) 8M x 64

         256MB           (1) 32M x 64        None            None

         264MB           (1) 32M x 64     (1) 1M x 64    (1) 1M x 64

         272MB           (1) 32M x 64     (1) 2M x 64        None

         272MB           (1) 32M x 64     (1) 1M x 64        None

         288MB           (1) 32M x 64     (1) 4M x 64        None

         288MB           (1) 32M x 64     (1) 2M x 64    (1) 2M x 64

         320MB           (1) 32M x 64     (1) 8M x 64        None

         320MB           (1) 32M x 64     (1) 4M x 64    (1) 4M x 64

         384MB           (1) 16M x 64     (1) 16M x 64   (1) 16M x 64

         384MB           (1) 32M x 64     (1) 8M x 64    (1) 8M x 64

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

         768MB           (1) 32M x 64     (1) 32M x 64   (1) 32M x 64

  Note: Board supports 768MB EDO DRAM or 384MB SDRAM.

                      CACHE CONFIGURATION

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

                            CPU SPEED SELECTION

    CPU       Clock    Multiplier     SW1/1    SW1/2     SW1/3     SW1/4
   speed     speed

  233MHz     66MHz        3.5x         On        On       On        Off

  266MHz     66MHz         4x          Off      Off       Off       Off

  300MHz     66MHz        4.5x         Off      Off       On        Off

