
A-TREND TECHNOLOGY CORPORATION

ATC-1020+

Processor         CX M1/AM K5/AM K6/Pentium
Processor Speed   75/90/100/120/133/150/166/180/200/233MHz
Chip Set          Intel
Video Chip Set    None
Maximum Onboard   128MB (EDO supported)
Memory
Maximum Video     None
Memory
Cache             256/512KB
BIOS              Award
Dimensions        280mm x 220mm
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), USB connector, IR connector
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  Floppy drive              CN1        Reset switch         J1/pins 1 & 2
  interface

  Parallel port             CN2        Green PC connector   J1/pins 4 & 5

  Serial port 1             CN3        Turbo LED            J1/pins 7 & 8

  Serial port 2             CN4        IDE interface LED     J1/pins 10 &
                                                                 11

  USB connector             CN5        Speaker               J1/pins 12 -
                                                                 15

  IDE interface 1           CN6        Power LED             J1/pins 17 -
                                                                 19

  IDE interface 2           CN7        Chassis fan power         J2

  PS/2 mouse port           CN8        32-bit PCI slots       PC1  PC4

  IR connector              CN9        Cache slot                SL1

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP8              Open

      CMOS memory clear                       JP8             Closed

     Flash BIOS update disabled              JP19          Pins 2 & 3
                                                              closed

      Flash BIOS update enabled               JP19          Pins 1 & 2
                                                              closed

                      DRAM CONFIGURATION

        Size                Bank 0               Bank 1

         8MB             (2) 1M x 36              None

        16MB             (2) 2M x 36              None

        16MB             (2) 1M x 36          (2) 1M x 36

        24MB             (2) 2M x 36          (2) 1M x 36

        32MB             (2) 4M x 36              None

        32MB             (2) 2M x 36          (2) 2M x 36

        40MB             (2) 4M x 36          (2) 1M x 36

        48MB             (2) 4M x 36          (2) 2M x 36

        64MB             (2) 8M x 36              None

        64MB             (2) 4M x 36          (2) 4M x 36

        72MB             (2) 8M x 36          (2) 1M x 36

        80MB             (2) 8M x 36          (2) 2M x 36

        96MB             (2) 8M x 36          (2) 4M x 36

        128MB            (2) 8M x 36          (2) 8M x 36

  Note: Board accepts EDO memory. Banks are interchangeable.

                   DIMM CONFIGURATION

            Size                       Bank 2

            8MB                      (1) 1M x 64

            16MB                     (1) 2M x 64

            32MB                     (1) 4M x 64

            64MB                     (1) 8M x 64

  Note: Do not install SIMMs & DIMMS at the same time.

                            CACHE CONFIGURATION

      Size           Bank 0              SL1                  TAG

      256KB        (2) 32K x 8      Not installed       (1) 16K/32K x 8

      256KB           None           256KB module       (1) 16K/32K x 8
                                      installed

      512KB        (2) 64K x 32     Not installed       (1) 16K/32K x 8

      512KB           None           512KB module       (1) 16K/32K x 8
                                      installed

  CACHE TAG CONFIGURATION

   Setting         JP17

   Enabled        Closed

   Disabled        Open

                          CPU SPEED SELECTION (CYRIX)

   CPU     Clock   Multiplier    JP4      JP5      JP6      JP7     JP9   JP10
  speed    speed

  120MHz   50MHz       2x       Closed    Open     Open    Open     1 &   2 &
                                                                    2      3

  133MHz   55MHz       2x       Closed   Closed   Closed    N/A     1 &   2 &
                                                                    2      3

  150MHz   60MHz       2x       Closed   Closed    Open    Closed   1 &   2 &
                                                                    2      3

  166MHz   66MHz       2x       Closed    Open    Closed   Closed   1 &   2 &
                                                                    2      3

  200MHz   75MHz       2x        Open    Closed   Closed    N/A     1 &   2 &
                                                                    2      3

  Note: Pins designated should be in the closed position.

                         CPU SPEED SELECTION (AMD K5)

   CPU     Clock   Multiplier    JP4      JP5      JP6      JP7     JP9   JP10
  speed    speed

  75MHz    50MHz      1.5x      Closed    Open     Open    Open     1 &   1 &
                                                                    2      2

  90MHz    60MHz      1.5x      Closed   Closed    Open    Closed   1 &   1 &
                                                                    2      2

  100MHz   66MHz      1.5x      Closed    Open    Closed   Closed   1 &   1 &
                                                                    2      2

  120MHz   60MHz      1.5x      Closed   Closed    Open    Closed   1 &   1 &
                                                                    2      2

  133MHz   66MHz      1.5x      Closed    Open    Closed   Closed   1 &   1 &
                                                                    2      2

  150MHz   60MHz      1.5x      Closed   Closed    Open    Closed   1 &   1 &
                                                                    2      2

  166MHz   66MHz      2.5x      Closed    Open    Closed   Closed   2 &   2 &
                                                                    3      3

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AMD K6)

   CPU     Clock   Multiplier    JP4     JP5     JP6      JP7     JP9   JP10
  speed    speed

  166MHz   66MHz      2.5x      Closed   Open   Closed   Closed   2 &   2 &
                                                                  3      3

  200MHz   66MHz       3x       Closed   Open   Closed   Closed   2 &   1 &
                                                                  3      2

  233MHz   66MHz      3.5x      Closed   Open   Closed   Closed   1 &   1 &
                                                                  2      2

  Note: Pins designated should be in the closed position.

                          CPU SPEED SELECTION (INTEL)

   CPU     Clock   Multiplier    JP4      JP5      JP6      JP7     JP9   JP10
  speed    speed

  75MHz    50MHz      1.5x      Closed    Open     Open    Open     1 &   1 &
                                                                    2      2

  90MHz    60MHz      1.5x      Closed   Closed    Open    Closed   1 &   1 &
                                                                    2      2

  100MHz   66MHz      1.5x      Closed    Open    Closed   Closed   1 &   1 &
                                                                    2      2

  120MHz   60MHz       2x       Closed   Closed    Open    Closed   1 &   2 &
                                                                    2      3

  133MHz   66MHz       2x       Closed    Open    Closed   Closed   1 &   2 &
                                                                    2      3

  150MHz   60MHz      2.5x      Closed   Closed    Open    Closed   2 &   2 &
                                                                    3      3

  166MHz   66MHz      2.5x      Closed    Open    Closed   Closed   2 &   2 &
                                                                    3      3

  180MHz   60MHz       3x       Closed   Closed    Open    Closed   2 &   1 &
                                                                    3      2

  200MHz   66MHz       3x       Closed    Open    Closed   Closed   2 &   1 &
                                                                    3      2

  233MHz   66MHz      3.5x      Closed    Open    Closed   Closed   1 &   1 &
                                                                    2      2

  Note: Pins designated should be in the closed position.

           CPU VOLTAGE SELECTION

       Voltage                JP11

         2.8v          Pins 9 & 10 closed

         2.9v           Pins 7 & 8 closed

         3.2v           Pins 5 & 6 closed

         3.3v           Pins 3 & 4 closed

         3.5v           Pins 1 & 2 closed

