DIAMOND FLOWER, INC.

RS-232C ADAPTER

Card Type          Serial interface
Chipset Controller Unidentified
I/O Options        Serial ports (2)
Maximum Dram       N/A

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  Serial port 1            J1       Serial port 2            J2

                         INTERRUPT SELECTION

   Port 1     Port 2      SW1/5       SW1/6       SW1/7      SW1/8

    IRQ4       IRQ3         On         Off         Off        On

    IRQ3       IRQ4        Off         On          On         Off

  Disabled    Disabled     Off         Off         Off        Off

                             ADDRESS SELECTION

    Port 1        Port 2        SW1/1      SW1/2      SW1/3       SW1/4

  3F8 (COM1:)   2F8 (COM2:)      On         Off         On         Off

  3F8 (COM1:)   2E8 (COM4:)      On         Off        Off         On

  3E8 (COM3:)   2F8 (COM2:)      Off         On         On         Off

  3E8 (COM3:)   2E8 (COM4:)      Off         On        Off         On

   Disabled      Disabled        Off        Off        Off         Off

                             CHIP INSTALLATION

               Chip                               Location

               8250                                 IC4

               1488                     IC2 (location unidentified)

               1489                      U9 (location unidentified)

  Note: These chips must be installed for the second serial port to be
  enabled.