
DIAMOND FLOWER, INC.

G486VPB (Rev. 0+)

Device     Mainboard
Type
Processor  80486SX/80486DX/CX486DX/80486DX2/CX486DX2/

           AM486DX2(SV8B)/AM486DX2(NV8T)/ST486DX2/80486DX4/

           80486DX4OverDrive/CX486DX4/AM486DX4(SV8B)/AM486DX4(NV8T)/AM5X86/AM5X86-P75/CX5X86/P24T
Processor  25/33/40/50/63(internal)/66(internal)/80(internal)/83(internal)/
Speed
           100(internal)/120(internal)/133(internal)MHz
Chip Set   VIA
Maximum    128MB DRAM (EDO supported)
Onboard
Memory
Cache      128/256/512KB
BIOS       Award
I/O        32-bit PCI slots (4), floppy drive interface, IDE interface (2), parallel port, serial
Options    ports (2), PS/2 mouse connector, green PC connector
Dimensions 220mm x 220mm

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Serial port 1              J1        Keylock                    J10

  Serial port 2              J2        Speaker                    J11

  External battery           J3        Reset switch               J12
  connector

  Floppy drive               J4        Turbo/green PC             J13
  interface                            connector

  Parallel port              J5        Turbo LED                  J14

  IDE interface 2            J6        Green PC LED               J15

  IDE interface 1            J7        32-bit PCI slots          PCI1-4

  IDE interface 2 LED        J8        PS/2 mouse connector       CN3

  IDE interface 1 LED        J9

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Battery type select external            JP3           Pins 1 & 2
                                                              closed

      Battery type select internal            JP3           Pins 2 & 3
                                                              closed

     12V flash EPROM 28F010                  JP5           Pins 1 & 2
                                                              closed

      5V flash EPROM 29F010 or EPROM          JP5           Pins 2 & 3
      27C010                                                  closed

     CMOS memory normal operation            JP22          Pins 1 & 2
                                                              closed

      CMOS memory clear                       JP22          Pins 2 & 3
                                                              closed

     Factory configured - do not alter      SW1/1          Pins 2 & 3
                                                              closed

             DRAM CONFIGURATION

   Size          Bank 0           Bank 1

    1MB      (1) 256K x 36         None

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

    2MB      (1) 512K x 36         None

    3MB      (1) 512K x 36     (1) 256K x 36

    4MB      (1) 512K x 36     (1) 512K x 36

    4MB       (1) 1M x 36          None

    5MB       (1) 1 M x 36     (1) 256K x 36

    6MB       (1) 1M x 36      (1) 512K x 36

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

    8MB       (1) 2M x 36          None

    9MB       (1) 2M x 36      (1) 256K x 36

   10MB       (1) 2M x 36      (1) 512K x 36

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

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

         DRAM CONFIGURATION (CONT.)

   Size          Bank 0           Bank 1

   16MB       (1) 4M x 36          None

   17MB       (1) 4M x 36      (1) 256K x 36

   18MB       (1) 4M x 36      (1) 512K x 36

   20MB       (1) 4M x 36      (1) 1M x 36

   24MB       (1) 4M x 36      (1) 2M x 36

   32MB       (1) 4M x 36      (1) 4M x 36

   32MB       (1) 8M x 36          None

   33MB       (1) 8M x 36      (1) 256K x 36

   34MB       (1) 8M x 36      (1) 512K x 36

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

   40MB       (1) 8M x 36      (1) 2M x 36

   48MB       (1) 8M x 36      (1) 4M x 36

   64MB       (1) 8M x 36      (1) 8M x 36

   64MB       (1) 16M x 36         None

   65MB       (1) 16M x 36     (1) 256K x 36

   66MB       (1) 16M x 36     (1) 512K x 36

   68MB       (1) 16M x 36     (1) 1M x 36

   72MB       (1) 16M x 36     (1) 2M x 36

   80MB       (1) 16M x 36     (1) 4M x 36

   96MB       (1) 16M x 36     (1) 8M x 36

   128MB      (1) 16M x 36     (1) 16M x 36

              CACHE CONFIGURATION

      Size          Bank 0           TAG

     128KB        (4) 32K x 8    (1) 16K x 8

     256KB        (4) 64K x 8    (1) 32K x 8

     512KB        (4) 128K x 8   (1) 32K x 8

                 CACHE JUMPER CONFIGURATION

    Size       J10       J11      J12       J13       J14

   128KB      2 & 3     1 & 2    1 & 2     1 & 2     1 & 2

   256KB      1 & 2     2 & 3    1 & 2     2 & 3     1 & 2

   512KB      1 & 2     1 & 2    2 & 3     2 & 3     2 & 3

  Note: Pins designated should be in the closed position.

                    CPU EXTERNAL CLOCK SPEED SELECTION

        Speed               JP15             JP17              JP19

        25MHz            Pins 2 & 3        Pins 1 & 2        Pins 2 & 3
                           closed           closed            closed

        33MHz            Pins 2 & 3        Pins 2 & 3        Pins 1 & 2
                           closed           closed            closed

        40MHz            Pins 1 & 2        Pins 1 & 2        Pins 2 & 3
                           closed           closed            closed

        50MHz            Pins 1 & 2        Pins 2 & 3        Pins 1 & 2
                           closed           closed            closed

       50iMHz            Pins 2 & 3        Pins 1 & 2        Pins 2 & 3
                           closed           closed            closed

       63iMHz            Pins 2 & 3        Pins 1 & 2        Pins 2 & 3
                           closed           closed            closed

       66iMHz            Pins 2 & 3        Pins 2 & 3        Pins 1 & 2
                           closed           closed            closed

       80iMHz            Pins 1 & 2        Pins 1 & 2        Pins 2 & 3
                           closed           closed            closed

       83iMHz            Pins 2 & 3        Pins 2 & 3        Pins 1 & 2
                           closed           closed            closed

       100iMHz           Pins 2 & 3        Pins 2 & 3        Pins 1 & 2
                           closed           closed            closed

       120iMHz           Pins 1 & 2        Pins 1 & 2        Pins 2 & 3
                           closed           closed            closed

       133iMHz           Pins 2 & 3        Pins 2 & 3        Pins 1 & 2
                           closed           closed            closed

                            CPU TYPE SELECTION

        Type           JP6     JP18     JP20     JP25     JP26      JP27

       80486SX        2 & 3    Open     Open     Open     2 & 3    2 & 3

     80486DX/DX2      2 & 3    Open     Open     1 & 2    1 & 2    1 & 2

      80486DX4        2 &3     2 & 3    Open     1 & 2    1 & 2    1 & 2

  80486DX4OverDrive   2 & 3    2 & 3    Open     2 & 3    1 & 2    1 & 2

  Pentium OverDrive   2 & 3    2 & 3    Open     2 & 3    1 & 2    1 & 2

    AM486DX2 SV8B     2 & 3    2 & 3    Open     1 & 2    1 & 2    1 & 2

    AM486DX2 NV8T     2 & 3    2 & 3    Open     1 & 2    1 & 2    1 & 2

    AM486DX4 SV8B     2 & 3    2 & 3    Open     1 & 2    1 & 2    1 & 2

    AM486DX4 NV8T     2 & 3    2 & 3    Open     1 & 2    1 & 2    1 & 2

       CX486DX        2 & 3    1 & 2    Open     1 & 2    1 & 2    1 & 2

      CX486DX2        2 & 3    1 & 2    Open     1 & 2    1 & 2    1 & 2

      CX486DX4        2 & 3    1 & 2    Open     1 & 2    1 & 2    1 & 2

      ST486DX2        2 & 3    1 & 2    Open     1 & 2    1 & 2    1 & 2

     AM5x86-P75       2 & 3    2 & 3    Open     1 & 2    1 & 2    1 & 2

       CX5x86         2 & 3    1 & 2    Open     1 & 2    1 & 2    1 & 2

  Note: Numbers designate pins that should be in the closed position.

                        CPU TYPE SELECTION (CONTW)

        Type            JP28       JP29       JRN1       JRN2       JRN3

       80486SX          Open       Open       Open      Closed      Open

     80486DX/DX2        Open       Open       Open      Closed      Open

      80486DX4          Open       Open       Open      Closed      Open

  80486DX4OverDrive     Open       Open       Open      Closed      Open

  Pentium OverDrive     Open       Open       Open      Closed      Open

    AM486DX2 SV8B      Closed      Open       Open      Closed      Open

    AM486DX2 NV8T       Open      Closed      Open      Closed      Open

    AM486DX4 SV8B       Open       Open       Open      Closed      Open

    AM486DX4 NV8T       Open       Open       Open      Closed      Open

       CX486DX          Open       Open      Closed      Open       Open

      CX486DX2          Open       Open      Closed      Open       Open

      CX486DX4          Open       Open      Closed      Open       Open

      ST486DX2          Open       Open      Closed      Open       Open

     AM5x86-P75        Closed      Open       Open      Closed      Open

       CX5x86           Open       Open       Open      Closed      Open

                           CPU VOLTAGE SELECTION

  Voltage          JP21                 JP23                  JP24

   3.45v     Pins 1 & 2 closed    Pins 2 & 3 closed    Pins 2 & 3 closed

   3.6v      Pins 3 & 4 closed    Pins 2 & 3 closed    Pins 2 & 3 closed

    4v       Pins 5 & 6 closed    Pins 2 & 3 closed    Pins 2 & 3 closed

    5v             Open           Pins 1 & 2 closed    Pins 1 & 2 closed

                          VL BUS SPEED SELECTION

           Speed                     JP4                     JP8

           <= 33MHz          Pins 1 & 2 closed       Pins 1 & 2 closed

            >33 MHz           Pins 2 & 3 closed       Pins 2 & 3 closed

                    DMA CHANNEL SELECTION

       Channel               JP1                  JP1

        None                 Open                 Open

          1            Pins 1 & 3 closed   Pins 2 & 4 closed

          3            Pins 3 & 5 closed   Pins 4 & 6 closed

                           PS/2 MOUSE SELECTION

           Setting                     JP2                   JP31

            Disabled           Pins 2 & 3 closed           Closed

             Enabled            Pins 1 & 2 closed            Open

