
GEMLIGHT COMPUTER, LTD.

GMB-P55IPS (VER. 1.52)

Processor           CX M1/AM K5/AM K6/Pentium
Processor Speed     75/90/100/120/133/150/166/200/233MHz
Chip Set            Intel
Video Chip Set      None
Maximum Onboard     256MB (EDO supported)
Memory
Maximum Video       None
Memory
Cache               256/512B
BIOS                Award
Dimensions          265mm x 220mm
I/O Options         32-bit PCI slots (4), floppy drive interface, green PC
                    connector, IDE interfaces (2), parallel port, PS/2
                    mouse interface, serial ports (2), IR connector, USB
                    connectors (2)
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  IR connector                J1       Parallel port              J11

  Power LED & keylock         J2       Serial port 2              J12

  Speaker                     J4       Serial port 1              J13

  IDE interface LED           J5       PS/2 mouse interface       J16

  IDE interface 1             J6       Turbo LED                  J19

  IDE interface 2             J7       Green PC connector         JP8

  Floppy drive interface      J8       Reset switch               JP11

  USB connector 1             J9       32-bit PCI slots         PC1  PC4

  USB connector 2            J10

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J3           Unidentified
      alter

     CMOS memory normal operation         JP13              Open

      CMOS memory clear                    JP13             Closed

      Flash BIOS voltage select 12v        JP20        Pins 1 & 2 closed

      Flash BIOS voltage select 5v         JP20        Pins 2 & 3 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

        128MB              (2) 16M x 36              None

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

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

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

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

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

  Note: Board accepts EDO memory. Board also accepts x 32 SIMMs.

                            CACHE CONFIGURATION

       Size              Bank 0            Bank 1              TAG

       256KB          (2) 32K x 32          None            (1) 8K x 8

       512KB          (2) 32K x 32      (2) 32K x 32     (1) 16K/32K x 8

       512KB          (2) 64K x 32          None         (1) 16K/32K x 8

  Note: The location of banks 0 & 1 is unidentified.

                        CPU SPEED SELECTION (CYRIX)

  CPU speed     Clock       Multiplier        JP1        JP2       JP18
                speed

   120MHz       50MHz           2x          Closed      Open      1 & 2,
                                                                  3 & 4

   133MHz       55MHz           2x          Closed      Open       Open

   150MHz       60MHz           2x          Closed      Open      3 & 4

   166MHz       66MHz           2x          Closed      Open      1 & 2

   200MHz       75MHz           2x          Closed      Open      5 & 6

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K5)

  CPU speed     Clock      Multiplier       JP1         JP2        JP18
               speed

   75MHz       50MHz          1.5x          Open        Open       1 & 2,
                                                                   3 & 4

   90MHz       60MHz          1.5x          Open        Open       3 & 4

   100MHz      66MHz          1.5x          Open        Open       1 & 2

   120MHz      60MHz          1.5x          Open        Open       3 & 4

   133MHz      66MHz           2x          Closed       Open       1 & 2

   150MHz      60MHz          1.5x          Open        Open       1 & 2

   166MHz      66MHz          2.5x         Closed      Closed      1 & 2

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (AM K6)

  CPU speed     Clock      Multiplier       JP1         JP2        JP18
                speed

   166MHz       66MHz         2.5x        Closed       Closed      1 & 2

   200MHz       66MHz          3x          Open        Closed      1 & 2

   233MHz       66MHz         3.5x         Open         Open       1 & 2

  Note: Pins designated should be in the closed position.

                        CPU SPEED SELECTION (INTEL)

  CPU speed     Clock      Multiplier       JP1         JP2        JP18
               speed

   75MHz       50MHz          1.5x          Open        Open       1 & 2,
                                                                   3 & 4

   90MHz       60MHz          1.5x          Open        Open       3 & 4

   100MHz      66MHz          1.5x          Open        Open       1 & 2

   120MHz      60MHz           2x          Closed       Open       3 & 4

   133MHz      66MHz           2x          Closed       Open       1 & 2

   150MHz      60MHz          2.5x         Closed      Closed      3 & 4

   166MHz      66MHz          2.5x         Closed      Closed      1 & 2

   200MHz      66MHz           3x           Open       Closed      1 & 2

   233MHz      66MHz          3.5x          Open        Open       1 & 2

  Note: Pins designated should be in the closed position.

                      CPU VOLTAGE SELECTION (SINGLE)

   Voltage        JP9         JP10        JP12        JP14         JP16

     3.3v         Open       Closed       Open      1 & 2, 3 &     Open
                                                   4, 5 & 6, 7
                                                       & 8

     3.5v        Closed       Open        Open      1 & 2, 3 &     Open
                                                   4, 5 & 6, 7
                                                       & 8

  Note: Pins designated should be in the closed position.

                       CPU VOLTAGE SELECTION (DUAL)

  Voltage    V core      JP9       JP10       JP12      JP14       JP16

   3.3v       2.8v       Open     Closed     Closed     Open       Open

   3.3v       2.9v       Open     Closed      Open      Open      Closed

   3.3v       3.2v       Open     Closed      Open      Open       Open

