
DIAMOND FLOWER, INC.

486-25/33UNB AIO, 486DX2-50UNB AIO

Processor           80486SX/80486DX/ODP486SX/80486DX2
Processor Speed     20/25/33/50(internal)MHz
Chip Set            UMC
Max. Onboard DRAM   16MB
Cache               None
BIOS                AMI
Dimensions          330mm x 218mm
I/O Options         Bus mouse port, floppy drive interface, IDE interface,
                    parallel port, serial port (2), VGA port
NPU Options         None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                 Location

  IDE interface              CN1       Turbo switch             J3 & J8

  Floppy drive               CN2       Reset switch             J4 & J9
  interface

  VGA feature                CN3       IDE interface LED          J5
  connector

  VGA port                   CN4       Power LED & keylock        J6

  Parallel port              CN5       Speaker                    J7

  Bus mouse port             CN6       External battery           J10

  Serial port 1              CN7       Serial port 2             JP31

  Alternate keyboard         J1        Riser card                 S1
  connector

  Turbo LED                  J2

                        USER CONFIGURABLE SETTINGS

             Function                   Jumper            Position

     Battery select internal            J11          Pins 2 & 3 closed

      Battery select external            J11          Pins 1 & 2 closed

     Speaker select internal            JP1               Closed

      Speaker select external            JP1                Open

     Onboard VGA local bus              JP2          Pins 2 & 3 closed
      enabled
                                         JP3               Closed

     Onboard VGA local bus              JP2          Pins 1 & 2 closed
      disabled
                                         JP3                Open

     Factory configured - do not        JP4               Closed
      alter

     Factory configured - do not        JP5         Pins 1 & 2 and 3 & 4
      alter                                                closed

     Factory configured - do not        JP6                Open
      alter

     Factory configured - do not        JP7                Open
      alter

     BIOS type select 27C256            JP8          Pins 2 & 3 closed
      (32KB)

      BIOS type select 27C512            JP8          Pins 1 & 2 closed
      (64KB)

     Factory configured - do not        JP10               Open
      alter

     Monitor type select color          JP11              Closed

      Monitor type select                JP11               Open
      monochrome

     VGA port (CN4) interrupt           JP12               Open
      select IRQ2

      VGA port (CN4) interrupt           JP12              Closed
      select none

     Factory configured - do not        JP13               Open
      alter

     Factory configured - do not        JP14              Closed
      alter

     Floppy interface enabled           JP20         Pins 1 & 2 closed

      Floppy interface disabled          JP20         Pins 2 & 3 closed

     Factory configured - do not        JP21         Pins 1 & 2 closed
      alter

     IDE interface enabled              JP22         Pins 1 & 2 closed

      IDE interface disabled             JP22         Pins 2 & 3 closed

                    PARALLEL PORT 1 (CN5) CONFIGURATION

      LPT       I/O Address     Interrupt      JP9       JP15      JP16

     LPT 1        3BC-3BEh        IRQ7        Pins 1    Pins 2     Pins 1
                                               & 2       & 3        & 2

     LPT 2        378-37Ah        IRQ7        Pins 1    Pins 1     Pins 1
                                               & 2       & 2        & 2

     LPT 3        278-27Ah        IRQ5        Pins 2    Pins 1     Pins 2
                                               & 3       & 2        & 3

   Disabled         N/A            N/A         N/A      Pins 2     Pins 2
                                                         & 3        & 3

  Note: Pins designated should be in the closed position.

                   SERIAL PORTS 1 &AMP; 2 CONFIGURATION

  Serial Port     Serial Port       JP17          JP18           JP19
       1              2

     COM1            COM2        Pins 1 & 2     Pins 1 & 2    Pins 1 & 2
                                   closed        closed         closed

     COM2            COM1        Pins 1 & 2     Pins 1 & 2    Pins 2 & 3
                                   closed        closed         closed

     COM1          Disabled      Pins 1 & 2     Pins 2 & 3    Pins 1 & 2
                                   closed        closed         closed

   Disabled          COM1        Pins 2 & 3     Pins 1 & 2    Pins 2 & 3
                                   closed        closed         closed

   Disabled          COM2        Pins 2 & 3     Pins 1 & 2    Pins 1 & 2
                                   closed        closed         closed

     COM2          Disabled      Pins 1 & 2     Pins 2 & 3    Pins 2 & 3
                                   closed        closed         closed

   Disabled        Disabled      Pins 2 & 3     Pins 2 & 3       Open
                                   closed        closed

               SERIAL PORT 1 (CN1) FORCED TRUE CONFIGURATION

        Mode               JP24              JP25              JP26

  Normal operation       Pins 1 & 2       Pins 1 & 2        Pins 1 & 2
                          closed            closed            closed

     Forced true         Pins 2 & 3       Pins 2 & 3        Pins 2 & 3
                          closed            closed            closed

              SERIAL PORT 2 (JP31) FORCED TRUE CONFIGURATION

        Mode               JP27              JP28              JP29

  Normal operation       Pins 1 & 2       Pins 1 & 2        Pins 1 & 2
                          closed            closed            closed

     Forced true         Pins 2 & 3       Pins 2 & 3        Pins 2 & 3
                          closed            closed            closed

                 SERIAL PORT 1 (CN7) DTE/DCE CONFIGURATION

          Function                               JP30

              DTE              Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, and 9 &
                                               10 closed

               DCE              Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, and 9 &
                                               10 closed

                SERIAL PORT 2 (JP31) DTE/DCE CONFIGURATION

          Function                               JP23

              DTE              Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, and 9 &
                                               10 closed

               DCE              Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, and 9 &
                                               10 closed

           VRAM CONFIGURATION

     Size         VRAM        Location

    512KB       (4) 44256      Bank 0

    1024KB      (8) 44256    Bank 0 & 1

                            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

     3MB         (1) 256K x    (1) 256K x     (1) 256K x        NONE
                    36             36             36

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

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

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

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

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

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

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

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

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

