
DIAMOND FLOWER, INC.

G586OPB (REV. 0+)

Device Type            Mainboard
Processor              Pentium
Processor Speed        75/90/100/120/133/150MHz
Chip Set               OPTI
Video Chip Set         None
Maximum Onboard Memory 128MB
Maximum Video Memory   None
Cache                  256/512/1024KB
BIOS                   Award
Dimensions             330mm x 220mm
I/O Options            32-bit PCI slots (4), floppy drive interface, IDE
                       interfaces (2), parallel port, PS/2 mouse
                       interface, serial ports (2)
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  Parallel port              JP3       IDE interface LED          JP14

  IDE interface 2            JP4       Power LED & LED            JP15

  Floppy drive interface     JP5       Speaker                    JP16

  IDE interface 1            JP6       Reset switch               JP17

  Serial port 1              JP7       Green LED                  JP18

  Serial port 2              JP8       CPU fan power              JP22

  PS/2 mouse interface       JP9       32-bit PCI slots         PC1  PC4

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

     Factory configured - do not           J2         Pins 2 & 3 closed
      alter

     Factory configured - do not           J3         Pins 2 & 3 closed
      alter

     Factory configured - do not           J4         Pins 2 & 3 closed
      alter

     Factory configured - do not           J8           Unidentified
      alter

     Factory configured - do not           J11              Open
      alter

     Factory configured - do not           J12              Open
      alter

     Flash BIOS voltage select 5v          J16        Pins 1 & 2 closed

      Flash BIOS voltage select 12v         J16        Pins 2 & 3 closed

     PS/2 mouse IRQ12 enabled              J17             Closed

      PS/2 mouse IRQ12 disabled             J17              Open

     Monitor type select color             J18        Pins 2 & 3 closed

      Monitor type select monochrome        J18        Pins 1 & 2 closed

     Factory configured - do not           J19              Open
      alter

     Factory configured - do not           J20        Pins 2 & 3 closed
      alter

     Factory configured - do not           J21             Closed
      alter

     Factory configured - do not           J22             Closed
      alter

     Factory configured - do not           J23             Closed
      alter

     Factory configured - do not           J24             Closed
      alter

     Factory configured - do not           J25             Closed
      alter

     Factory configured - do not           J30        Pins 2 & 3 closed
      alter

     Factory configured - do not           J31             Closed
      alter

     Factory configured - do not           J34        Pins 2 & 3 closed
      alter

     Factory configured - do not           J50             Closed
      alter

     Factory configured - do not           J51             Closed
      alter

     Factory configured - do not           J52              Open
      alter

                SIMM CONFIGURATION

      Size            Bank 0           Bank 1

       2MB        (2) 256K x 36         None

       4MB        (2) 512K x 36         None

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

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

       8MB         (2) 1M x 36          None

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

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

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

      16MB         (2) 2M x 36          None

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

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

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

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

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

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

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

      64MB         (2) 8M x 36          None

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

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

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

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

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

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

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

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     256KB        (8) 32K x 8    (1) 32K x 8

     512KB        (8) 64K x 8    (1) 32K x 8

      1MB         (8) 128K x 8   (1) 32K x 8

  CACHE JUMPER CONFIGURATION

   Size       J6        J7

  256KB      Open      Open

  512KB      Open     Closed

   1MB      Closed    Closed

                          CACHE VOLTAGE SELECTION

           Voltage                    JP1                    JP2

              3.3v             Pins 1 & 2 closed      Pins 1 & 2 closed

         Mixed voltage        Pins 2 & 3 closed      Pins 2 & 3 closed

                            CPU SPEED SELECTION

  CPU speed     Clock     Multiplier       J9          J10         J13
               speed

   75MHz       50MHz         1.5x         Open        Open        Open

   90MHz       60MHz         1.5x        Closed      Closed       Open

   100MHz      66MHz         1.5x         Open       Closed       Open

   100MHz      50MHz          2x          Open        Open       Closed

   120MHz      60MHz          2x         Closed      Closed      Closed

   133MHz      66MHz          2x          Open       Closed      Closed

                           DMA CHANNEL SELECTION

         Channel                   JP11                     JP13

             1             Pins 2 & 3 closed        Pins 2 & 3 closed

              3             Pins 1 & 2 closed        Pins 1 & 2 closed

