printer.def

来自「Welcome to PMOS. PMOS is a set of module」· DEF 代码 · 共 22 行

DEFINITION MODULE Printer;

	(********************************************************)
	(*							*)
	(*	    Device driver for the printer.		*)
	(*							*)
	(*	Author:		P. Moylan			*)
	(*	Last edited:	21 August 1989			*)
	(*							*)
	(*	Status:		Working.			*)
	(*							*)
	(********************************************************)

PROCEDURE PrintChar (ch: CHAR);

    (* Sends one character to the printer.  NOTE: Many printers have	*)
    (* an internal buffer which saves characters until a whole line of	*)
    (* characters has been received.  Thus, the printing of the current	*)
    (* character might be delayed until a carriage return is received.	*)

END Printer.