AXIOM TECHNOLOGY, INC.

SBC8257

Processor            CX M1/AM K5/Pentium
Processor Speed      75/90/100/120/133/150/166/200MHz
Chip Set             Unidentified
Video Chip Set       Unidentified
Maximum Onboard      128MB (EDO supported)
Memory
Maximum Video Memory 1MB
Cache                256/512KB
BIOS                 Award
Dimensions           185mm x 122mm
I/O Options          Floppy drive interface, green PC connector, IDE
                     interfaces (2), parallel port, PS/2 mouse
                     port/keyboard, serial ports (2), VGA port, flat panel
                     connector, PC104 connectors (2)
NPU Options          None

[Image]

                                CONNECTIONS

  Purpose                   Location     Purpose               Location

  Serial port 1                CN1       Auxiliarty              EXKB
                                         keyboard connector

  VGA port                     CN2       Green PC connector       GRN

  Serial port 2                CN3       IDE interface LED        HDL

  Parallel port                CN4       Reset switch             JP8

  Floppy drive interface       CN5       Power LED &              KBL
                                         keylock

  IDE interface 1              CN6       Speaker                  SPK

  IDE interface 2              CN7       Turbo LED                TBL

  Flat panel connector         CN8       PC104 connector         104AB

  PS/2 mouse                   CN9       PC104 connector         104CD
  port/keyboard

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       1MB        (1) 256K x 36         None

       2MB        (1) 256K x 36    (1) 256K x 36

       2MB        (1) 512K x 36         None

       3MB        (1) 256K x 36    (1) 512K x 36

       4MB        (1) 512K x 36    (1) 512K x 36

       4MB         (1) 1M x 36          None

       5MB        (1) 256K x 36     (1) 1M x 36

       6MB        (1) 512K x 36     (1) 1M x 36

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

       8MB         (1) 2M x 36          None

      10MB        (1) 512K x 36     (1) 2M x 36

      12MB         (1) 1M x 36      (1) 2M x 36

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

      20MB         (1) 1M x 36      (1) 4M x 36

      24MB         (1) 2M x 36      (1) 4M x 36

      32MB         (1) 4M x 36      (1) 4M x 36

      32MB         (1) 8M x 36          None

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

      40MB         (1) 2M x 36      (1) 8M x 36

      48MB         (1) 4M x 36      (1) 8M x 36

      64MB         (1) 8M x 36      (1) 8M x 36

      96MB         (1) 8M x 36      (1) 16M x 36

      128MB        (1) 16M x 36     (1) 16M x 36

  Note: Board accepts EDO memory.

                 CACHE CONFIGURATION

  Note: The location of the cache is unidentified.

                      VIDEO MEMORY CONFIGURATION

  Note: 1MB video memory is factory installed and not configurable.

                        CPU SPEED SELECTION (CYRIX)

    CPU       Clock     Multiplier      JP2      JP3       JP4       JP6
   speed      speed

  120MHz      50MHz         2x         Open     Open     Closed      3 &
                                                                     5, 4
                                                                     & 6

  150MHz      60MHz         2x         Open     Open     Closed      1 &
                                                                     3, 4
                                                                     & 6

  166MHz      66MHz         2x         Open     Open     Closed      2 &
                                                                     4, 3
                                                                     & 5

  Note: Pins designated should be in the closed position.

            CPU SPEED SELECTION (AMD)

  Note: AMD CPU configuration is unidentified.

                        CPU SPEED SELECTION (INTEL)

    CPU       Clock    Multiplier      JP2        JP3       JP4     JP6
   speed     speed

   75MHz     50MHz        1.5x         Open       Open     Open    3 & 5,
                                                                   4 & 6

   90MHz     60MHz        1.5x         Open       Open     Open    1 & 3,
                                                                   4 & 6

  100MHz     66MHz        1.5x         Open       Open     Open    2 & 4,
                                                                   3 & 5

  120MHz     60MHz         2x         Closed      Open     Open    1 & 3,
                                                                   4 & 6

  133MHz     66MHz         2x         Closed      Open     Open    2 & 4,
                                                                   3 & 5

  150MHz     50MHz        2.5x         Open      Closed    Open    3 & 5,
                                                                   4 & 6

  166MHz     66MHz        2.5x        Closed     Closed    Open    2 & 4,
                                                                   3 & 5

  200MHz     66MHz         3x          Open      Closed    Open    2 & 4,
                                                                   3 & 5

  Note: Pins designated should be in the closed position.

          CPU VOLTAGE SELECTION

       Voltage               JP5

        2.5v          Pins 5 & 6 closed

        2.7v          Pins 7 & 8 closed

        3.3v          Pins 1 & 2 closed

        3.52v         Pins 3 & 4 closed

                          SERIAL PORT 2 SELECTION

          Setting                                JP7

  »          RS-232                             1 & 2

             RS-422           1 & 3, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 17 &
                                    18, 19 & 20, 21 & 22, 23 & 24

             RS-485           1 & 3, 4 & 6, 7 & 8, 9 & 10, 11 & 12, 13 &
                             14, 15 & 16, 17 & 18, 19 & 20, 21 & 22, 23 &
                                                  24

  Note: Pins designated should be in the closed position.

                         KYEBOARD/MOUSE SELECTION

         Setting                    JP9                     JP10

   CN8 used as keyboard      Pins 2 & 3 closed        Pins 2 & 3 closed

  CN8 used as PS/2 mouse     Pins 1 & 2 closed        Pins 1 & 2 closed