.MCALL	.MODULE
.MODULE	ISDTTM,VERSION=04,COMMENT=<ISDTTM/SYSLIB>,IDENT=No,LIB=Yes

; Copyright (c) 1998 by Mentec, Inc., Nashua, NH.
; All rights reserved
;
; This software is furnished under a license for use only on a
; single computer system and  may  be  copied  only  with  the
; inclusion of the above copyright notice.  This software,  or
; any other copies thereof, may not be provided  or  otherwise
; made available to any other person except for  use  on  such
; system and to one who agrees to these license  terms.  Title
; to  and  ownership of the software shall at all times remain
; in Mentec, Inc.
;
; The information in this document is subject to change without
; notice and should not be construed as a commitment by Digital
; Equipment Corporation, or Mentec, Inc.
;
; Digital and Mentec  assume  no  responsibility for the use or
; reliability of its software on equipment which is not supplied
; by Digital  or Mentec,  and listed  in the  Software  Product
; Description.
	.SBTTL	Module Declaration

	.NLIST
	.ENABL	LC
	.DSABL	GBL
	.NLIST	CND
	.LIST
; ++
; FACILITY:
;
;    RT-11 System Subroutine Library
;
; CALLABLE ENTRIES:
;
;	ISDTTM
;
; ENVIRONMENT:
;
;    This routine can be used by any job running in a single-job
;    or multi-job environment.
;
;
; INCLUDE FILES:
;

	; SYSMAC.SML		; RT-11 system macro library.

	.MCALL	.SDTTM		; SDTTM	programmed request.

;
; EXTERNAL REFERENCES:
;

	.GLOBL	$ERRM0		; Entry point to EMT error conversion routine.
	.GLOBL	$SYSLB		; Include system library work area.
	.WEAK	$MSARG		; Trap code for missing argument 
	.SBTTL	ISDTTM - Fortran-callable Routine

; ++
; FUNCTIONAL DESCRIPTION:
;
;    The ISDDTM routine sets the system date and time.  An argument of -1
;    leaves a corresponding value unchanged.
;    
; CALLING SEQUENCE:
;
;    CALL ISDDTM( date, hitime, lotime )
;
; INPUT PARAMETERS:
;
;    R5      -	address of ISDTTM's argument block
;
;    0(R5)   -	argument count of ISDTTM call
;    2(R5)   -	address of new system date
;    4(R5)   -	address of high-order time of day, (in ticks past midnight)
;    6(R5)   -	address of low-order time of day, (in ticks past midnight)
;
; --
	.SBTTL	ISDTTM - Fortran-callable Routine

	.PSECT	SYS$I

SDTTM::
ISDTTM::			; Entry point to ISDTTM routine.
	CMPB	#3,@R5		; all arg present ?
	BNE	ERR		; no, then err
	ADD	#10,R5		; R5 -> past third argument
	MOV	SP,R1		; store stack pntr
	MOV	@-(R5),-(SP)	; Insrt new low-order time in SDTTM prmtr blk
	MOV	@-(R5),-(SP)	; Insrt new high-order time in SDTTM prmtr blk
	MOV	@-(R5),-(SP)	; Insrt new date in SDTTM prmt blk
	MOV	SP,R2		; R4 -> addr of three-word arg blk
	CMP	-(SP),-(SP)	; Allocate space for SDTTM's argument block.
	.SDTTM	SP,R2 
	MOV	R1,SP		; restore stack
	CALLR	$ERRM0		; Get and convert any errors (status in R0).

ERR:	TRAP	$MSARG		; Handle any missing arguments in call
	RETURN

	.END