
ADVANCED INTEGRATION RESEARCH, INC.

54CMI REV. 1.0

Processor             Pentium Overdrive/Pentium
Processor Speed       75/90/100MHz
Chip Set              OPTI
Max. Onboard DRAM     128MB
Cache                 256/512/1024KB
BIOS                  AMI
Dimensions            330mm x 218mm
I/O Options           32-bit PCI bus slots (3), 32-bit VESA local bus slots
                      (2), floppy drive interface (2),

                      IDE interface, parallel port, serial ports (2), green
                      PC connector
NPU Options           None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Serial port 1              CN1       Reset switch                J3

  Serial port 2              CN2       External battery            J4

  IDE interface              CN3       Turbo switch                J5

  Parallel port              CN4       Turbo LED                   J6

  Floppy drive               CN5       IDE interface LED           J7
  interface 2

  Floppy drive               CN6       Green PC feature           JP15
  interface 1                          connector

  Power LED & keylock         J1       32-bit PCI bus slots     P1 - P3

  Speaker                     J2       32-bit VESA Local bus   SL1 & SL2
                                       slots

                        USER CONFIGURABLE SETTINGS

                 Function                     Jumper         Position

     Turbo mode enabled/flash BIOS             J5            Closed
      programming disabled

      Turbo mode disabled/flash BIOS            J5             Open
      programming enabled

     CMOS memory normal operation             JP14          Pins 2 & 3
                                                              closed

      CMOS memory clear                        JP14          Pins 1 & 2
                                                              closed

     Parallel port IRQ select IRQ7            JP32          Pins 1 & 2
                                                              closed

      Parallel port IRQ select IRQ5            JP32          Pins 2 & 3
                                                              closed

     On board PCI IDE enabled                 JP35            Open

      On board PCI IDE disabled                JP35           Closed

                DRAM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         NONE

       4MB        (2) 256K x 36    (2) 256K x 36

       4MB        (2) 512K x 36         NONE

       6MB        (2) 256K x 36    (2) 512K x 36

       8MB        (2) 512K x 36    (2) 512K x 36

       8MB         (2) 1M x 36          NONE

      10MB        (2) 256K x 36     (2) 1M x 36

      12MB        (2) 512K x 36     (2) 1M x 36

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

      16MB         (2) 2M x 36          NONE

      18MB        (2) 256K x 36     (2) 2M x 36

      20MB        (2) 512K x 36     (2) 2M x 36

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

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

      32MB         (2) 4M x 36          NONE

      34MB        (2) 256K x 36     (2) 4M x 36

      36MB        (2) 512K x 36     (2) 4M x 36

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

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

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

      64MB         (2) 8M x 36          NONE

      66MB        (2) 256K x 36     (2) 8M x 36

      68MB        (2) 512K x 36     (2) 8M x 36

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

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

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

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

      CACHE CONFIGURATION

      Size          Bank 0

     256KB        (8) 32K x 8

     512KB        (8) 64K x 8

      1MB        (8) 128K x 8

  CACHE JUMPER CONFIGURATION

   Size      JP4        JP5

  256KB      Open      Open

  512KB      Open     Closed

   1MB      Closed    Closed

         CPU SPEED CONFIGURATION

  Speed      JO1        JO2       JO3

  75MHz      Open      Open     Closed

  90MHz      Open     Closed     Open

  100MHz    Closed    Closed     Open

                      FOUR FLOPPY DRIVE CONFIGURATION

    All drives     ECP mode enabled      JP29         JP30        JP31
     enabled

       Yes                No             Open         Open        Open

        No          Yes, use DMA 3      Closed        1 & 2       1 & 2

        No          Yes, use DMA 1      Closed        2 & 3       2 & 3

  Note: Pins designated should be in the closed position.

                          GREEN PC CONFIGURATION

                        Description                              JP15

  Can be used to control video card VSYNC. Connect to pin       Pin 1
               12 on VGA feature connector.

  Can be used to control video card HSYNC. Connect to pin       Pin 2
               11 on VGA feature connector.

   Enables or disables video signals. Connect this to pin       Pin 3
               18 on VGA feature connector.

