Int 14 Fn 0F  - Fossil - Enable/disable Flow Control                       [S]

   AH = 0Fh
   AL = bit mask describing requested flow control (see #0266)
   DX = port number

Return: nothing

See Also: AH=09h"MBBIOS",AH=10h"FOSSIL"

Bitfields for FOSSIL requested flow control:
Bit(s) Description (Table 0266)
 0 XON/XOFF on transmit (watch for XOFF while sending)
 1 CTS/RTS (CTS on transmit/RTS on receive)
 2 reserved
 3 XON/XOFF on receive (send XOFF when buffer near full)
 4-7   all 1