.MACRO	HDRDEF,$GBL
;
; DEFINE THE STRUCTURE OF THE MESSAGE HEADER. 
;
; THIS IS STRUCTURE CAN BE USED TO FORM A RECORD THAT CAN BE READ 
; FROM THE QUEUE.  IE: CONCATENATE THIS STRUCTURE TO PROCEED
; THE ACTUAL DATA TO BE RETURNED ON A READ_Q.
; 
;
; DATE OF LAST UPDATE:  8/11/86
;
;		INLAND STEEL
;		PROCESS AUTOMATION DEPT.
;		3210 WATLING ST. MS 2-465
;		EAST CHICAGO, IN   46312
;		
	.SAVE_PSECT
	.PSECT	$$HDR,ABS
.=0
HDR$C_SNM:	.BLKB	6	; ASCII DECNET SOURCE NODE NAME
				; (FOR MESSAGES QUEUED WITHIN A NODE
				; THIS WILL BE BLANK)
HDR$C_DNM:	.BLKB	6	; DESTINATION DECNET NODE NAME
				; FOR MESSAGES QUEUED WITHIN A NODE,
				; THIS WILL BE BLANK).
HDR$Q_OFFQT:	.BLKQ	1	; OFF QUEUE TIME (FILLED IN DURING READ)
HDR$W_TYPE:	.BLKW	1	; TYPE OF MESSAGE 
;
	; 0= MESSAGE CAN BE DELETED WHEN QUEUE IS FULL AND THIS IS OLDEST
	; 1= MESSAGE IS NOT TO BE DELETED  EVEN IF QUEUE IS FULL
	; 2= IF REMOTE NODE QUEUE IS FULL, THEN DO NOT QUEUE ON REMOTE NODE
;
HDR$Q_ONQT:	.BLKQ	1	; ON QUEUE TIME (FILLED IN WHEN MESSAGE WAS
				; FIRST WRITTEN TO A QUEUE EITHER LOCALLY
				; OR ON THE REMOTE QUEUE (IT IS PRESERVED
				; WHEN REQUEUED ON TARGET NODE)
HDR$W_LEN:	.BLKW	1	; BYTE COUNT OF MESSAGE (DOES NOT INCLUDE HEADER)
HDR$W_QSEQ:	.BLKW	1	; ON QUEUE SEQUENCE NUMBER 
HDR$K_SIZ=.			; MINIMUM MESSAGE SIZE
HDR$K_MAXSEQ=9999		; MAXIMUM ON QUEUE SEQUENCE NUMBER
.=0
	.RESTORE_PSECT
	.ENDM