
DIAMOND FLOWER, INC.

G586OPA (REV. 0+)

Device Type              Mainboard
Processor                Pentium
Processor Speed          75/90/100/120/133MHz
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 alter        J2           Pins 2 & 3
                                                              closed

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

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

     Factory configured - do not alter        J8             Closed

     Factory configured - do not alter       J11             Closed

     Factory configured - do not alter       J12             Closed

     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 alter       J19              Open

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

     Factory configured - do not alter       J21             Closed

     Factory configured - do not alter       J22             Closed

     Factory configured - do not alter       J23             Closed

     Factory configured - do not alter       J24             Closed

     Factory configured - do not alter       J25             Closed

     Factory configured - do not alter       J50              Open

     Factory configured - do not alter       J51           Pins 2 & 3
                                                              closed

     Factory configured - do not alter       J56           Pins 2 & 3
                                                              closed

                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

