/ 
/ 
/                   FIRST PRINTING, FEBRUARY 1974
/ 
/ THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO 
/ CHANGE WITHOUT NOTICE AND SHOULD NOT BE CONSTRUED
/ AS A COMMITMENT BY DIGITAL EQUIPMENT CORPORATION.
/ DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPON-
/ SIBILITY FOR ANY ERRORS THAT MAY APPEAR IN THIS
/ DOCUMENT.
/ 
/ THE SOFTWARE DESCRIBED IN THIS DOCUMENT IS FUR-
/ NISHED TO THE PURCHASER UNDER A LICENSE FOR USE ON
/ A SINGLE COMPUTER SYSTEM AND CAN BE COPIED (WITH
/ INCLUSION OF DIGITAL'S COPYRIGHT NOTICE) ONLY FOR 
/ USE IN SUCH SYSTEM, EXCEPT AS MAY OTHERWISE BE PRO-
/ VIDED IN WRITING BY DIGITAL.
/ 
/ DIGITAL EQUIPMENT CORPORATION ASSUMES NO RESPONSIBILITY
/ FOR THE USE OR RELIABILITY OF ITS SOFTWARE ON EQUIP-
/ MENT THAT IS NOT SUPPLIED BY DIGITAL.
/ 
/ COPYRIGHT (C) 1974, BY DIGITAL EQUIPMENT CORPORATION
/ 
/ 
        .EJECT
/	EDIT #3
/
/ COPYRIGHT DIGITAL EQUIPMENT CORP., MAYNARD, MASS.
/
/			2/23/71	R. MCLEAN
/
/	CANCEL -- FORTRAN CALLABLE SUBROUTINE
/		TO CANCEL CLOCK QUEUE REQUEST'S.
/
/	CALLING SEQUENCE:
/	    CALL CANCEL (TN,IEV)
/	     TN=TASK NAME
/	     IEV=EVENT VARIABLE
/
/
	.GLOBL	CANCEL,.DAA,.FTSB
CANCEL	0
	JMS*	.DAA	/PICK UP THE CALLER'S ARGUMENTS
	JMP	ARGEND	/SKIP OVER ARGUMENTS
TSKNAM	0
EVNTY	0
ARGEND	LAC	EVNTY	/PUT EVENT VARIABLE ADDRESS
	DAC	REQEV	/IN REQUEST -- CLEAR ADDRESS
	DZM	EVNTY	/SINCE IT IS OPTIONAL
	JMS*	.FTSB	/CONVERT TASK NAME TO SIXBT
	TSKNAM
	REQNAM
	CAL	CANCPB	/ISSUE SCHEDULE REQUEST
	JMP*	CANCEL
CANCPB	4	/FUNCTION
REQEV	0	/EVENT VARIABLE REQUEST
REQNAM	0
	0
	.END	CANCEL
