A user has proposed a new feature for the d52 disassembler, and even provided code patches to implement it (I love it when they do that!). I'd like to know how useful this would be to everyone. The feature is addition of a new control file directive (Z) that would output instruction cycle counts as in this example:

;
; Serial ISR
;
serisr:	push	psw		    ; 01e4   c0 d0      @P
	push	acc		    ; 01e6   c0 e0      @`
	mov	a,psw		    ; 01e8   e5 d0      eP
	anl	a,#0e7h		    ; 01ea   54 e7      Tg
	orl	a,#8		    ; 01ec   44 08      D.
	mov	psw,a		    ; 01ee   f5 d0      uP
	jnb	ri,serisrti	    ; 01f0   30 98 0b   0..
	cjne	r3,#8,serisr1	    ; 01f3   bb 08 02   ;..
	sjmp	serisr2		    ; 01f6   80 04      ..
;
serisr1:
	inc	r3		; 1 ; 01f8   0b         .
	mov	@r1,sbuf	; 2 ; 01f9   a7 99      '.
	inc	r1		; 1 ; 01fb   09         .
serisr2:
	clr	ri		; 1 ; 01fc   c2 98      B.
serisrti:
	jnb	ti,serisrx	; 2 ; 01fe   30 99 02   0..
	clr	ti		; 1 ; 0201   c2 99      B.
serisrx:
	pop	acc		; 2 ; 0203   d0 e0      P`
	pop	psw		; 2 ; 0205   d0 d0      PP
	setb	es		; 1 ; 0207   d2 ac      R,
	reti			; 2 ; 0209   32         2
;
; --- Cycle count 01f8-0209 = 15
;

The Z directive has been applied to addresses 01f8 to 0209 to show what it does.

It's somewhat problematic in that 8052 variants will have differing cycle counts for the same instructions, but there are ways to deal with that.

So, I'd like to know how many of you would use this feature and how important would it be to you.

Thanks for your feedback.