
A-TREND TECHNOLOGY CORPORATION

ATC-1020

Processor           CX M1/AM K5/Pentium
Processor Speed     75/90/100/120/133/150/166/180/200MHz
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), cache slot, IR connector,
                    USB 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

  IDE interface 1          CN5         Speaker               J1 pins 12 -
                                                                 15

  IDE interface 2          CN6         Power LED &           J1 pins 17 -
                                       keylock                   21

  PS/2 mouse port          CN7         32-bit PCI slots       PC1  PC4

  Chassis fan power        FAN         Cache slot                SL1

  IR connector              IR         USB connector             USB

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP8              Open

      CMOS memory clear                       JP8             Closed

     Flash BIOS write protect enabled        JP19          Pins 2 & 3
                                                              closed

      Flash BIOS write protect disabled       JP19          Pins 1 & 2
                                                              closed

                   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 DIMM and SIMM at the same time.

             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

                  DRAM CONFIGURATION (CONT)

        Size                Bank 0               Bank 1

        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

        128MB            (2) 16M x 36             None

  Note: Board accepts EDO memory. Banks are interchangeable.

                            CACHE CONFIGURATION

      Size           Bank 0             Bank 1                TAG

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

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

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

  Note: The location of the TAG is unidentified.

  CACHE TAG CONFIGURATION

   Setting         JP17

   Enabled        Closed

   Disabled        Open

                        CPU SPEED SELECTION (CYRIX)

    CPU     Clock    Multiplier    JP5       JP6      JP7     JP9   JP10
  speed     speed

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

  133MHz    55MHz      50MHz      Closed    Closed    N/A     1 &   2 & 3
                                                               2

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

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

  Note: Pins designated should be in the closed position.

                         CPU SPEED SELECTION (AMD)

    CPU     Clock    Multiplier    JP5       JP6      JP7     JP9   JP10
  speed     speed

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

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

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

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

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

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

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

    CPU     Clock    Multiplier    JP5       JP6      JP7     JP9   JP10
  speed     speed

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

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

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

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

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

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

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

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

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

  Note: Pins designated should be in the closed position.

                      CPU TYPE SELECTION

        Type                 JP11                 JP14

       CX6X86          Pins 1 & 2 closed   Pins 1 & 2 closed

       CX6X86L         Pins 2 & 3 closed   Pins 7 & 8 closed

        AM K5          Pins 1 & 2 closed   Pins 1 & 2 closed

      P54C STD         Pins 1 & 2 closed   Pins 3 & 4 closed

      P54C VRE         Pins 1 & 2 closed   Pins 1 & 2 closed

        P55C           Pins 2 & 3 closed   Pins 1 & 2 closed

     CPU VOLTAGE SELECTION (P55C ONLY)

       Voltage                JP14

         2.7v          Pins 9 & 10 closed

         2.8v           Pins 7 & 8 closed

         2.9v           Pins 5 & 6 closed

         3.3v           Pins 3 & 4 closed

         3.5v           Pins 1 & 2 closed

