
GEMLIGHT COMPUTER, LTD.

GMB-P56SPC (VER. 1.10)

Device Type       Mainboard
Processor         CX 6X86/AM K5/ Pentium/Pentium MMX
Processor Speed   75/90/100/110/120/133/150/166/180/200MHz
Chip Set          SIS 5596
Video Chip Set    Unidentified
Maximum Onboard   512MB (EDO & SDRAM supported)
Memory
Maximum Video     Unidentified
Memory
Cache             256KB
BIOS              Award/AMI
Dimensions        220mm x 270mm
I/O Options       32-bit PCI slots (4), floppy drive interface, game port,
                  IDE interface, parallel port, PS/2 mouse port, serial
                  ports (2), VGA connector

[Image]

                                CONNECTIONS

  Purpose                       Location    Purpose             Location

  Reset switch                     J1       IDE interface 2       J18

  Suspend LED                      J2       Serial port 1         J19

  Green PC connector               J3       Serial port 2         J20

  Speaker                          J4       VGA connector         J21

  IDE interface LED                J5       Audio extension       J22
                                            card connector

  Power LED & keylock              J6       Game port             J23

  IR connector                    J12       PS/2 mouse            J28
                                            interface

  Audio in - CD-ROM               J13       AT power              J29
  (Mitsumi/Panasonic)                       connector

  Audio in - CD-ROM (Sony)        J14       PS/2 mouse port       J30

  Floppy drive interface          J15       IR connector          J33

  Parallel port                   J16       32-bit PCI slots   PC1 - PC4

  IDE interface 1                 J17

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     CMOS memory normal operation            JP0           Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP0           Pins 2 & 3
                                                              closed

     Flash BIOS voltage select 5v            JP5           Pins 2 & 3
                                                              closed

      Flash BIOS voltage select 12v           JP5           Pins 1 & 2
                                                              closed

     Linear burst mode (Cyrix 6x86           JP7             Closed
      only) enabled

      Linear burst mode (Cyrix 6x86           JP7              Open
      only) disabled

     Onboard sound enabled                   JP13            Closed

      Onboard sound disabled                  JP13             Open

             CACHE CONFIGURATION

     Size          Bank 0         TAG RAM

     256K       (2) 32K x 32    8/16/32K x 8

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       8MB         (2) 1MB x 36         None

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

      16MB         (2) 2MB x 36         None

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

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

      32MB         (2) 4MB x 36         None

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

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

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

      64MB         (2) 8MB x 36         None

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

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

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

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

      128MB       (2) 16MB x 36         None

      136MB       (2) 16MB x 36     (2) 1MB x 36

      144MB       (2) 16MB x 36     (2) 2MB x 36

      160MB       (2) 16MB x 36     (2) 4MB x 36

      192MB       (2) 16MB x 36     (2) 8MB x 36

      256MB       (2) 16MB x 36    (2) 16MB x 36

      256MB       (2) 32MB x 36         None

      264MB       (2) 32MB x 36     (2) 1MB x 36

      272MB       (2) 32MB x 36     (2) 2MB x 36

      288MB       (2) 32MB x 36     (2) 4MB x 36

      320MB       (2) 32MB x 36     (2) 8MB x 36

      384MB       (2) 32MB x 36    (2) 16MB x 36

      512MB       (2) 32MB x 36    (2) 32MB x 36

                        CPU SPEED SELECTION (INTEL)

  Speed     Clock    Multiplier    JP2    JP3     S4        S5       S6
            speed

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

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

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

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

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

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

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

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

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

  Note: Designated pins are in the closed position.

                      CPU SPEED SELECTION (INTEL MMX)

  Speed      Clock    Multiplier    JP2    JP3     S4       S5       S6
            speed

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

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

  Note: Designated pins are in the closed position.

                       CPU SPEED SELECTION (CX 6X86)

  Speed     Clock    Multiplier    JP2   JP3     S4        S5       S6
           speed

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

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

  150MHz   60MHz        2.5x       1 &   2 &    Closed    Open     Open
                                   2      3

  166MHz   66MHz        2.5x       1 &   2 &    Open     Closed    Open
                                   2      3

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

  Note: Designated pins are in the closed position.

                        CPU SPEED SELECTION (AM K5)

  Speed     Clock    Multiplier    JP2    JP3     S4        S5       S6
            speed

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

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

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

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

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

  150MHz    60MHz       2.5x       1 &    2 &   Closed     Open     Open
                                    2      3

  166MHz    66MHz       2.5x       1 &    2 &    Open     Closed    Open
                                    2      3

[Image]

                     AUDIO EXTENSION CARD CONNECTIONS

  Purpose                 Location     Purpose                 Location

  Audio extension card      CN1        Line in                    J3
  connector

  Speaker out                J1        Microphone                 J4

  Line out                   J2        VGA connector              J7

                      CPU VOLTAGE SELECTION (SINGLE)

  Voltage           Q4            JP1        S1         S2         S3

    3.4V       2 Transistors    Closed     Closed     Closed     Closed
                installed

    3.5V       2 Transistors     Open      Closed     Closed     Closed
                installed

    3.4V       1 Transistor     Closed       N/A        N/A        N/A
                installed

    3.5V       1 Transistor     Closed       N/A        N/A        N/A
                installed

                       CPU VOLTAGE SELECTION (DUAL)

  V (I/O)    V Core         Q4           JP1       S1       S2       S3

   3.4V      2.8V      2 Transistors    Closed    Open     Open     Open
                        installed

