
MICROMODULE SYSTEMS, INC.

GEMINI (REV. 2.0)

Processor              Pentium
Processor Speed        120/133/150MHz
Chip Set               Pico
Video Chip Set         None
Maximum Onboard Memory 256MB
Maximum Video Memory   None
Cache                  256KB
BIOS                   IBM/SystemSoft/Phoenix
Dimensions             330mm x 218mm
I/O Options            32-bit PCI slots (3)
NPU Options            None

[Image]

              CONNECTIONS

      Purpose            Location

  32-bit PCI slots       PC1  PC3

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

      Test/monitor header                   JP1          Unidentified

      Test/monitor header                   JP2          Unidentified

      Test/monitor header                   JP3          Unidentified

      Test/monitor header                   JP4          Unidentified

      Test/monitor header                   JP5          Unidentified

      Test/monitor header                   JP6          Unidentified

     PCI voltage select 5v                 JP7        Pins 1 & 2 closed

      PCI voltage select 3v                 JP7        Pins 2 & 3 closed

      Test/monitor header                   JP9          Unidentified

      Test/monitor header                  JP13          Unidentified

     Factory configured - do not          JP17          Unidentified
      alter

     Factory configured - do not          JP18          Unidentified
      alter

     Speaker enabled                      JP21             Closed

      Speaker disabled                     JP21              Open

     CMOS memory normal operation         JP22              Open

      CMOS memory clear                    JP22             Closed

     VPP power disabled                   JP23              Open

      VPP power enabled                    JP23             Closed

     ROM write disabled                   JP24              Open

      ROM write enabled                    JP24             Closed

     Data rate select pin 6               JP27              Open

      Data rate select pin 6 & 27          JP27             Closed

      Test/monitor header                  JP28          Unidentified

     H8 clock select PLL clock            JP29        Pins 1 & 2 closed
      generator

      H8 clock select crystal              JP29        Pins 2 & 3 closed
      oscillator

      Test/monitor header                  JP501         Unidentified

      Test/monitor header                  JP502         Unidentified

  Note: The location of the test/monitor headers is unidentified.

             SIMM 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

          SIMM 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

     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

                        SIMM MODULE POWER SELECTION

                Setting                                JP19

                  Enabled                Pins 1 & 2, 3 & 4, 5 & 6 closed

                  Disabled                             Open

                        SIMM POWER SUPPLY SELECTION

                Setting                                JP20

                  Enabled                Pins 1 & 2, 3 & 4, 5 & 6 closed

                  Disabled                             Open

                 CACHE CONFIGURATION

  Note: The location of the cache is unidentified.

          CPU SPEED SELECTION

  Speed      JP10     JP11      JP12

  32MHz      Open    Closed    Closed

  40MHz      Open     Open     Closed

  50MHz     Closed   Closed     Open

  60MHz     Closed    Open     Closed

  66MHz      Open    Closed     Open

  75MHz     Closed   Closed    Closed

  80MHz     Closed    Open      Open

            CPU TYPE SELECTION

        Type                 JP8

        P54C          Pins 1 & 2 closed

        P55C          Pins 2 & 3 closed

                          SERIAL PORT 2 SELECTION

        Setting          JP36/pins 1 &    JP36/pins 3 &    JP36/pins 5 &
                              2                 4                6

        Used as H8          Closed           Closed            Open

        Used as IR          Open             Open            Closed
         connector

                           PCI REQ/INT SELECTION

            Setting                    JP34                  JP35

        Normal operation              Open                  Open

             Test mode                Closed                Closed

                           CLOCK SKEW SELECTION

      Skew              JP14               JP15               JP16

        0             Pins 1 & 2        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

       .55            Pins 1 & 2        Pins 1 & 2      Pins 2 & 3 closed
                       closed             closed

      1.10            Pins 1 & 2        Pins 2 & 3      Pins 1 & 2 closed
                       closed             closed

      1.65            Pins 1 & 2        Pins 2 & 3      Pins 2 & 3 closed
                       closed             closed

      -2.20           Pins 2 & 3        Pins 1 & 2      Pins 1 & 2 closed
                       closed             closed

      -1.65           Pins 2 & 3        Pins 1 & 2      Pins 2 & 3 closed
                       closed             closed

      -1.10           Pins 2 & 3        Pins 2 & 3      Pins 1 & 2 closed
                       closed             closed

      -.55            Pins 2 & 3        Pins 2 & 3      Pins 2 & 3 closed
                       closed             closed

