From c1f32e8cb34471aab2a6e3b3926bb31e76d6e956 Mon Sep 17 00:00:00 2001
From: Peter Ferrie <peter.ferrie@gmail.com>
Date: Sat, 1 Jun 2019 01:45:48 -0400
Subject: [PATCH] optimize the volume table generation code

---
 pt3_player/pt3_lib.s | 21 +++------------------
 1 file changed, 3 insertions(+), 18 deletions(-)

diff --git a/pt3_player/pt3_lib.s b/pt3_player/pt3_lib.s
index 77625158..e3f707f2 100644
--- a/pt3_player/pt3_lib.s
+++ b/pt3_player/pt3_lib.s
@@ -2282,34 +2282,19 @@ vol_outer:
 	pha			; save HL
 
 	clc			; add HL,DE
-	lda	z80_l
 	adc	z80_e
-	sta	z80_l
+	sta	z80_e
 	lda	z80_h
 	adc	z80_d
-	sta	z80_h		; carry is important
-
-	lda	z80_h		; ex de,hl             ; swap
-	pha
-	lda	z80_l
-	pha
-	lda	z80_d
-	sta	z80_h
-	lda	z80_e
-	sta	z80_l
-	pla
-	sta	z80_e
-	pla
-	sta	z80_d
+	sta	z80_d		; carry is important
 
 			; sbc hl,hl
+	lda	#$ff
 	bcs	vol_ffs
 vol_zeros:
 	lda	#0
-	beq	vol_write
 
 vol_ffs:
-	lda	#$ff
 vol_write:
 	sta	z80_h
 	sta	z80_l