
DIAMOND FLOWER, INC.

486-OCV PLUS

Processor        80486SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/40/50(internal)/50/66(internal)/66MHz
Chip Set         Opti
Max. Onboard DRAM64MB
Cache            64/128/256KB
BIOS             AMI
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2)

[Image]

                                CONNECTIONS

  Purpose                   Location    Purpose                 Location

  Diagnostic LCD port          J1       Turbo switch               J7

  Keyboard connector           J2       Reset switch               J8

  Speaker                      J3       PS/2 mouse port            J9

  Power LED & keylock          J4       External battery          J10

  Turbo LED                    J5       32-bit VESA Local       SL1, SL2
                                        bus slots

  Reset switch                 J6

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation            J11        pins 1,2,3 open
      (External Battery)

      CMOS memory normal operation            J11           pins 1 & 2
      (Internal Battery)                                      closed

      CMOS memory clear                       J11           pins 2 & 3
                                                              closed

     Factory configured - do not             JP13             Open
      alter

     Factory configured - do not             JP14            Closed
      alter

     Factory configured - do not             JP26          pins 1 & 2
      alter                                                   closed

     Monitor type select color               JP29            Closed

      Monitor type select monochrome          JP29             Open

     Factory configured - do not             JP31          pins 1 & 2
      alter                                                   closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2          Bank 3

     1MB         (1) 256K x       NONE           NONE            NONE
                    36

     2MB         (1) 256K x     (1) 256K x       NONE            NONE
                    36             36

     2MB         (1) 512K x       NONE           NONE            NONE
                    36

     4MB        (1) 1M x 36       NONE           NONE            NONE

     5MB         (1) 256K x    (1) 1M x 36       NONE            NONE
                    36

     6MB        (1) 2M x 36     (1) 256K x    (1) 1M x 36        NONE
                                   36

     6MB         (1) 512K x       NONE        (1) 1M x 36        NONE
                    36

     8MB        (1) 1M x 36    (1) 1M x 36       NONE            NONE

     8MB        (4) 2M x 36       NONE           NONE            NONE

     9MB        (1) 1M x 36    (1) 1M x 36     (1) 256K x        NONE
                                                  36

     9MB        (4) 2M x 36       NONE         (1) 256K x        NONE
                                                  36

     12MB       (1) 1M x 36    (1) 1M x 36    (1) 1M x 36        NONE

     12MB       (4) 2M x 36       NONE        (1) 1M x 36        NONE

     13MB        (1) 256K x    (1) 1M x 36    (1) 1M x 36    (1) 1M x 36
                    36

     13MB        (1) 256K x    (1) 1M x 36    (1) 2M x 36        NONE
                    36

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

     16MB       (4) 4M x 36       NONE           NONE            NONE

     16MB       (4) 2M x 36       NONE        (1) 2M x 36        NONE

     18MB        (1) 256K x     (1) 256K x    (1) 4M x 36        NONE
                    36             36

     18MB        (1) 512K x       NONE        (1) 4M x 36        NONE
                    36

     20MB       (1) 1M x 36    (1) 4M x 36       NONE            NONE

     20MB       (1) 4M x 36    (1) 1M x 36       NONE            NONE

     24MB       (1) 1M x 36    (1) 1M x 36    (1) 4M x 36        NONE

     24MB       (1) 2M x 36       NONE        (1) 4M x 36        NONE

     24MB       (1) 1M x 36    (1) 4M x 36    (1) 4M x 36        NONE

     24MB       (1) 4M x 36    (1) 1M x 36    (1) 4M x 36        NONE

     28MB       (1) 1M x 36    (1) 1M x 36    (1) 4M x 36    (1) 1M x 36

     28MB       (1) 2M x 36       NONE        (1) 4M x 36    (1) 1M x 36

     28MB       (1) 1M x 36    (1) 4M x 36    (1) 1M x 36    (1) 1M x 36

     28MB       (1) 1M x 36    (1) 4M x 36    (1) 2M x 36        NONE

     28MB       (1) 4M x 36    (1) 1M x 36    (1) 1M x 36    (1) 1M x 36

     28MB       (1) 4M x 36    (1) 1M x 36    (4) 2M x 36        NONE

     32MB       (1) 4M x 36    (1) 4M x 36       NONE            NONE

                            DRAM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2         Bank 3

     32MB       (1) 8M x 36        NONE           NONE           NONE

     34MB        (1) 256K x     (1) 256K x     (1) 4M x 36   (1) 4M x 36
                    236            236

     34MB        (1) 512K x        NONE        (1) 8M x 36       NONE
                     36

     36MB       (1) 1M x 36    (1) 4M x 36     (1) 4M x 36       NONE

     36MB       (1) 4M x 36    (1) 1M x 36     (1) 4M x 36       NONE

     36MB       (1) 4M x 36    (1) 4M x 36     (1) 1M x 36       NONE

     36MB       (1) 8M x 36        NONE        (1) 1M x 36       NONE

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

     40MB       (4) 2M x 36        NONE        (1) 8M x 36       NONE

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

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

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

     40MB       (1) 8M x 36        NONE        (1) 2M x 36       NONE

     48MB       (1) 4M x 36    (1) 4M x 36     (1) 4M x 36       NONE

     48MB       (1) 8M x 36        NONE        (1) 4M x 36       NONE

     52MB       (1) 1M x 36    (1) 4M x 36     (1) 4M x 36   (1) 4M x 36

     52MB       (1) 1M x 36    (1) 4M x 36     (1) 8M x 36       NONE

     52MB       (1) 4M x 36    (1) 1M x 36     (1) 4M x 36   (1) 4M x 36

     52MB       (1) 4M x 36    (1) 1M x 36     (1) 8M x 36       NONE

     52MB       (1) 4M x 36    (1) 4M x 36     (1) 4M x 36   (1) 1M x 36

     52MB       (4) 8M x 36        NONE        (1) 4M x 36   (1) 1M x 36

     64MB       (1) 4M x 36    (1) 4M x 36     (1) 4M x 36   (1) 4M x 36

     64MB       (1) 8M x 36        NONE        (1) 8M x 36       NONE

                     CPU SPEED SELECTION

        Speed                JP12                 JP25

        25MHz                Open          pins 2 & 3 closed

        33MHz               Closed         pins 2 & 3 closed

       50iMHz                Open          pins 1 & 2 closed

        50MHz                Open          pins 2 & 3 closed

       66iMHz               Closed         pins 2 & 3 closed

                            CACHE CONFIGURATION

       Size              Bank 0            Bank 1              TAG

       64KB            (4) 8K x 8        (4) 8K x 8           8K x 8

       128KB          (4) 32K x 8           NONE              8K x 8

       256KB          (4) 32K x 8        (4) 32K x 8     16K x 8 or 32K x
                                                                8

                        CACHE JUMPER CONFIGURATION

    Size          JP6            JP7            JP8             JP9

    64KB         Open           Open         pins 2 & 3      pins 2 & 3
                                               closed          closed

   128KB        Closed          Open         pins 1 & 2      pins 1 & 2
                                               closed          closed

   256KB        Closed         Closed        pins 2 & 3      pins 2 & 3
                                               closed          closed

              VESA WAIT STATE/BUS SPEED CONFIGURATION

    CPU speed      Wait states          JP23            JP24

     < 33MHz      0 wait states         Open            Open

     > 33MHz       1 wait state        Closed          Closed

                            VESA CONFIGURATION

        Function                   JP18                     JP34

        No delay            pins 2 & 3 closed        pins 2 & 3 closed

      Delay 1 PLCK          pins 1 & 2 closed         pins 1 & 2,3 & 4
                                                           closed

  Note:If using a 80486DX 50mhz CPU, the recommended setting is for delay
  1 PLCK.

