.TITLE	BYTMOV	MOVE A BYTE ARRAY
	.SBTTL	GENERAL INFORMATION
	.IDENT	/01/
	.LIST	ME

;+
; AUTHOR:	KERRY WYCKOFF
;-
 
;+
; CHANGES:	NONE
;-
 
;+
; MODULE FUNCTION:
;
;	THIS ROUTINE MOVES A SPECIFIED NUMBER OF BYTES
;	FROM A SOURCE ARRAY TO A TARGET ARRAY.
;
;-
 
;+
; ASSEMBLY INSTRUCTIONS:
;
;	MAC BYTMOV=BYTMOV
;
;-

;+
; CALL FORMAT:
;
;	CALL BYTMOV(LENGTH,SOURCE,TARGET)
;
;-

	.PAGE
	.SBTTL	SYMBOL, MACRO, DATA DEFINITIONS

;+
; LOCAL SYMBOL DEFINITIONS:	NONE
;-
 
;+
; LOCAL MACROS:	NONE
;-
 
;+
; LOCAL DATA BLOCKS:	NONE
;-
 
	.PAGE
	.SBTTL	FUNCTION DETAILS

;+
; FUNCTION DETAILS:
;
;
;	INPUTS:
;
;		R5 CONTAINS THE ADDRESS OF THE PARAMETER LIST
;		1) NUMBER OF PARAMETERS
;		2) WORD: ADDRESS OF TOTAL ARRAY LENGTH
;		3) BYTE: ADDRESS OF SOURCE ARRAY
;		4) BYTE: ADDRESS OF TARGET ARRAY
;
;	OUTPUTS:	NONE
;
;	SIDE EFFECTS:
;
;		R5 HAS BEEN ALTERED TO INCREASE SPEED
;
;-
 
	.PAGE
	.SBTTL	CODE SECTION
	.PSECT	W08COD
	.ENABL	LSB
BYTMOV::
	TST	(R5)+			; BUMP R5
	MOV	@(R5)+,R1		; R1=#BYTES TO MOVE
	BLE	99$			; IF LE 0, RETURN
	MOV	(R5)+,R2		; R2=ADDRESS OF SOURCE
	MOV	(R5),R3			; R3=ADDRESS OF TARGET
1$:
	MOVB	(R2)+,(R3)+		; MOVE A BYTE
	SOB	R1,1$			; LOOP UNTIL DONE
99$:
	RTS	PC			; RETURN
	.END