HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

    INT 14,4 - Serial Port Extended Initialization (PS/2 & later systems)

       AH = 04
       AL = break setting
       BH = parity setting
       BL = stop bit setting
       CH = word length setting
       CL = baud rate setting
       DX = zero based serial port number (0-3)

                        --- Break Setting ---
                             1 = break
                             0 = no break

       ----- Parity Setting -----        --- Stop Bit Setting ---

          0 = no parity                   0 = one stop bit
          1 = odd parity                  1 = 2 stop bits
          2 = even parity                     1½ if register CH=0
          3 = stick parity odd                (5 bit word length)
          4 = stick parity even

       -- Word Length Setting --       ---- Baud rate Setting ----

              0 = 5 bits                 0 = 110       5 = 2400
              1 = 6 bits                 1 = 150       6 = 4800
              2 = 7 bits                 2 = 300       7 = 9600
              3 = 8 bits                 3 = 600       8 = 19200
                                         4 = 1200

       on return:
       AH = port status
       AL = modem status


       - for status bits see INT 14,STATUS

Esc or Alt-X to exit int 14,4 Home/PgUp/PgDn/End ←↑↓→