
AMPTRON INTERNATIONAL, INC.

PM-7900

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          260mm x 220mm
I/O Options         32-bit PCI slots (3), floppy drive interface, green PC
                    connector, IDE interfaces (2), parallel port, serial
                    ports (2), cache slot, VRM connector
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port 1              CN1       External battery            J7

  Serial port 2              CN2       Power LED & keylock         J8

  Parallel port              CN3       Speaker                     J9

  Floppy drive interface     CN4       Green PC connector         JP6

  IDE interface 2            CN5       32-bit PCI slots         PC1 - PC3

  IDE interface 1            CN6       Cache slot                 SL1

  IDE interface LED           J5       VRM connector              VRM

  Reset switch                J6

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Battery type select internal            J7            Pins 2 & 3
                                                              closed

      Battery type select external            J7              Closed

      CMOS memory clear                       J7            Pins 3 & 4
                                                              closed

      Flash BIOS voltage select 12v           JP4             Closed

      Flash BIOS voltage select 5v            JP4              Open

      Green PC mode enabled                   JP6           Pins 1 & 2
                                                              closed

      Green PC mode disabled                  JP6              Open

                  DIMM/DRAM CONFIGURATION

     Size          Bank 0         Bank 1        Bank 2

      8MB       (2) 1M x 36        None          None

      8MB           None           None       (1) 1M x 64

     16MB       (2) 2M x 36        None          None

     16MB       (2) 1M x 36    (2) 1M x 36       None

     16MB           None           None       (1) 2M x 64

     16MB           None       (2) 1M x 36    (1) 1M x 64

     24MB       (2) 1M x 36    (2) 2M x 36       None

     24MB           None       (2) 2M x 36    (1) 1M x 64

     24MB           None       (2) 1M x 36    (1) 2M x 64

     32MB       (2) 4M x 36        None          None

     32MB       (2) 2M x 36    (2) 2M x 36       None

     32MB           None           None       (1) 4M x 64

     32MB           None       (2) 2M x 36    (1) 2M x 64

     40MB       (2) 1M x 36    (2) 4M x 36       None

     40MB           None       (2) 4M x 36    (1) 1M x 64

     40MB           None       (2) 1M x 36    (1) 4M x 64

     48MB       (2) 4M x 36    (2) 2M x 36       None

     48MB           None       (2) 4M x 36    (1) 2M x 64

     48MB           None       (2) 2M x 36    (1) 4M x 64

     64MB       (2) 8M x 36        None          None

     64MB       (2) 4M x 36    (2) 4M x 36       None

              DIMM/DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1        Bank 2

     64MB           None           None       (1) 8M x 64

     64MB           None       (2) 4M x 36    (1) 4M x 64

     72MB       (2) 8M x 36    (2) 1M x 36       None

     72MB           None       (2) 8M x 36    (1) 1M x 64

     72MB           None       (2) 1M x 36    (1) 8M x 64

     80MB       (2) 2M x 36    (2) 8M x 36       None

     80MB           None       (2) 8M x 36    (1) 2M x 64

     80MB           None       (2) 2M x 36    (1) 8M x 64

     96MB       (2) 8M x 36    (2) 4M x 36       None

     96MB           None       (2) 8M x 36    (1) 4M x 64

     96MB           None       (2) 4M x 36    (1) 8M x 64

     128MB      (2) 8M x 36    (2) 8M x 36       None

     128MB          None       (2) 8M x 36    (1) 8M x 64

  Note: Board accepts EDO memory.

                        DIMM VOLTAGE CONFIGURATION

     Voltage              JP7               JP8                JP9

       3.3v            Pins 2 & 3        Pins 2 & 3         Pins 2 & 3
                        closed             closed             closed

        5v             Pins 1 & 2        Pins 1 & 2         Pins 1 & 2
                        closed             closed             closed

                            CACHE CONFIGURATION

         Size                     SL1                       TAG

         256KB          256KB module installed      (1) 8K/16K/32K x 8

         512KB          512KB module installed        (1) 16K/32K x 8

                        CPU SPEED SELECTION (CYRIX)

   CPU      Clock    Multiplier   JP5    JP10     JP11      JP12    JP13
  speed    speed

  100MHz   50MHz        2x        2 &   Closed    Closed   Closed   Open
                                   3

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

  Note: Pins designated should be in the closed position.

                         CPU SPEED SELECTION (AMD)

    CPU      Clock    Multiplier   JP5     JP10     JP11    JP12    JP13
  speed     speed

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

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

   CPU     Clock    Multiplier   JP5    JP10     JP11     JP12     JP13
  speed    speed

  75MHz    50MHz       1.5x      2 &   Closed   Closed    Open     Open
                                  3

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

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

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

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

  150MHz   60MHz       2.5x      1 &    Open    Closed    Closed   Closed
                                  2

  166MHz   66MHz       2.5x      1 &   Closed    Open     Closed   Closed
                                  2

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

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

  Note: Pins designated should be in the closed position.

                           CPU VOLTAGE SELECTION

               Voltage                                JP14

                   3.3v                         Pins 2 & 3 closed

                  3.5v                         Pins 1 & 2 closed

