Int 14 Fn 00  - Fossil (fido/opus/seadog Standard Interface Level) - Init  [S]

   AH = 00h
   AL = initializing parameters
       7 - 6 - 5      4 - 3     2    1 - 0
       -BAUD RATE-    PARITY   STOP   WORD
                   BITS  LENGTH
       000 19200 bd   00 none  0: 1  00: 5
       001 38400 bd   01 odd   1: 2  01: 6
       010   300 bd   11 even    10: 7
       011   600 bd          11: 8
       100  1200 bd
       101  2400 bd
       110  4800 bd
       111  9600 bd (4800 on PCjr)
   DX = port number (0-3 or FFh if only performing non-I/O setup)

Return: AH = RS-232 status code bits
       bit 0: RDA - input data is available in buffer
       bit 1: OVRN - data has been lost
       bit 5: THRE - room is available in output buffer
       bit 6: TSRE - output buffer empty
   AL = modem status bits
       bit 3: always 1
       bit 7: DCD - carrier detect

See Also: AH=05h"FOSSIL",AH=81h"COMM-DRV",AH=82h"COURIERS"