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 DRAM 64MB                                         
   Cache             64/128/256KB                                 
   BIOS              AMI                                          
   Dimensions        330mm x 218mm                                
   I/O Options       32-bit VESA local bus slots (2)              

<gopher://bitreich.org/I/th99/m/C-D/31949-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose            | Location | Purpose         | Location |
   |--------------------+----------+-----------------+----------|
   | Diagnostic LCD     |    J1    | Turbo switch    |    J7    |
   | port               |          |                 |          |
   |--------------------+----------+-----------------+----------|
   | Keyboard connector |    J2    | Reset switch    |    J8    |
   |--------------------+----------+-----------------+----------|
   | Speaker            |    J3    | PS/2 mouse port |    J9    |
   |--------------------+----------+-----------------+----------|
   | Power LED &        |    J4    | External        |   J10    |
   | keylock            |          | battery         |          |
   |--------------------+----------+-----------------+----------|
   | Turbo LED          |    J5    | 32-bit VESA     | SL1, SL2 |
   |                    |          | Local bus slots |          |
   |--------------------+----------+-----------------+----------|
   | Reset switch       |    J6    |                 |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  J11   | pins 1,2,3 |
   |   | (External Battery)               |        |    open    |
   |---+----------------------------------+--------+------------|
   |   | 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 36 |    NONE     |    NONE    |   NONE   |
   |------+---------------+-------------+------------+----------|
   | 2MB  | (1) 256K x 36 | (1) 256K x  |    NONE    |   NONE   |
   |      |               |     36      |            |          |
   |------+---------------+-------------+------------+----------|
   | 2MB  | (1) 512K x 36 |    NONE     |    NONE    |   NONE   |
   |------+---------------+-------------+------------+----------|
   | 4MB  |  (1) 1M x 36  |    NONE     |    NONE    |   NONE   |
   |------+---------------+-------------+------------+----------|
   | 5MB  | (1) 256K x 36 | (1) 1M x 36 |    NONE    |   NONE   |
   |------+---------------+-------------+------------+----------|
   | 6MB  |  (1) 2M x 36  | (1) 256K x  |  (1) 1M x  |   NONE   |
   |      |               |     36      |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 6MB  | (1) 512K x 36 |    NONE     |  (1) 1M x  |   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  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 12MB |  (4) 2M x 36  |    NONE     |  (1) 1M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 13MB | (1) 256K x 36 | (1) 1M x 36 |  (1) 1M x  | (1) 1M x |
   |      |               |             |     36     |    36    |
   |------+---------------+-------------+------------+----------|
   | 13MB | (1) 256K x 36 | (1) 1M x 36 |  (1) 2M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 16MB |  (1) 1M x 36  | (1) 1M x 36 |  (1) 1M x  | (1) 1M x |
   |      |               |             |     36     |    36    |
   |------+---------------+-------------+------------+----------|
   | 16MB |  (4) 4M x 36  |    NONE     |    NONE    |   NONE   |
   |------+---------------+-------------+------------+----------|
   | 16MB |  (4) 2M x 36  |    NONE     |  (1) 2M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 18MB | (1) 256K x 36 | (1) 256K x  |  (1) 4M x  |   NONE   |
   |      |               |     36      |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 18MB | (1) 512K x 36 |    NONE     |  (1) 4M x  |   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  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 24MB |  (1) 2M x 36  |    NONE     |  (1) 4M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 24MB |  (1) 1M x 36  | (1) 4M x 36 |  (1) 4M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 24MB |  (1) 4M x 36  | (1) 1M x 36 |  (1) 4M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 28MB |  (1) 1M x 36  | (1) 1M x 36 |  (1) 4M x  | (1) 1M x |
   |      |               |             |     36     |    36    |
   |------+---------------+-------------+------------+----------|
   | 28MB |  (1) 2M x 36  |    NONE     |  (1) 4M x  | (1) 1M x |
   |      |               |             |     36     |    36    |
   |------+---------------+-------------+------------+----------|
   | 28MB |  (1) 1M x 36  | (1) 4M x 36 |  (1) 1M x  | (1) 1M x |
   |      |               |             |     36     |    36    |
   |------+---------------+-------------+------------+----------|
   | 28MB |  (1) 1M x 36  | (1) 4M x 36 |  (1) 2M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 28MB |  (1) 4M x 36  | (1) 1M x 36 |  (1) 1M x  | (1) 1M x |
   |      |               |             |     36     |    36    |
   |------+---------------+-------------+------------+----------|
   | 28MB |  (1) 4M x 36  | (1) 1M x 36 |  (4) 2M x  |   NONE   |
   |      |               |             |     36     |          |
   |------+---------------+-------------+------------+----------|
   | 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  |  (1) 4M x  |
   |      |     236     |     236     |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 34MB | (1) 512K x  |    NONE     |  (1) 8M x  |    NONE    |
   |      |     36      |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 36MB | (1) 1M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 36MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 36MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 36MB | (1) 8M x 36 |    NONE     |  (1) 1M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 40MB | (1) 1M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 4M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 40MB | (4) 2M x 36 |    NONE     |  (1) 8M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 40MB | (1) 1M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 40MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 40MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 1M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 40MB | (1) 8M x 36 |    NONE     |  (1) 2M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 48MB | (1) 8M x 36 |    NONE     |  (1) 4M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 52MB | (1) 1M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 52MB | (1) 1M x 36 | (1) 4M x 36 |  (1) 8M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 52MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 4M x  |  (1) 4M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 52MB | (1) 4M x 36 | (1) 1M x 36 |  (1) 8M x  |    NONE    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 52MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 52MB | (4) 8M x 36 |    NONE     |  (1) 4M x  |  (1) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 64MB | (1) 8M x 36 |    NONE     |  (1) 8M x  |    NONE    |
   |      |             |             |     36     |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    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.                                       |
   +------------------------------------------------------------+