BLACK BOX CORPORATION

PC422/485

Card Type               Serial card
Chip Set                Unidentified
Maximum Onboard Memory  None
I/O Options             Serial port
Data Bus                8-bit ISA
Floppy drives supported None

[Image]

                CONNECTIONS

       Function               Label

  25-pin serial port           J2

                        USER CONFIGURABLE SETTINGS

                  Function                     Label        Position

  Serial port select IRQ3 (COM2)                E1      Pins 1 & 2 closed

  Serial port select IRQ4 (COM4)                E1      Pins 2 & 3 closed

  Serial port driver RTS enabled                E2           Closed

  Serial port driver always enabled             E2            Open

  Serial port select XT-J8 slot                 E3           Closed

  Serial port select all other slots            E3            Open

                       SERIAL PORT ADDRESS SELECTION

  Address   S1/1    S1/2    S1/3    S1/4    S1/5    S1/6    S1/7    S1/8

   238h      On      Off     Off    Off     Off     Off     Off     Off

   2B8h      Off     On      Off    Off     Off     Off     Off     Off

   338h      Off     Off     On     Off     Off     Off     Off     Off

   3B8h      Off     Off     Off     On     Off     Off     Off     Off

   278h      Off     Off     Off    Off      On     Off     Off     Off

   2F8h      Off     Off     Off    Off     Off      On     Off     Off

   378h      Off     Off     Off    Off     Off     Off      On     Off

   3F8h      Off     Off     Off    Off     Off     Off     Off      On