Category: serial I/O

INT 14 - X00 FOSSIL - STUFF RECEIVE BUFFER

	AH = 21h
	AL = character
	DX = port number
Return: nothing
Notes:	the given character is inserted at the end of the receive buffer as if
	  it had just arrived from the serial port; all normal receive
	  processing (XON/XOFF, ^C/^K) is performed on the character
	fully re-entrant
SeeAlso: AH=20h"X00"