From db97305119feae0996a279568e0cfd735def4c90 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Wed, 7 Dec 2022 16:43:45 -0800
Subject: [PATCH] tweak tweak

---
 dither4.s | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/dither4.s b/dither4.s
index e3cc121..5682f87 100644
--- a/dither4.s
+++ b/dither4.s
@@ -156,7 +156,7 @@ wait_loop:
 
 each_scanline:
     .macro audio_prep
-        ldy VCOUNT ; 4 cycles
+        ; Y is VCOUNT at entry
         lda (sample_ptr),y ; 5/6 cyc
         sta audiotemp ; 3 cyc
     .endmacro
@@ -225,9 +225,10 @@ each_scanline:
     inner_scanline
     audio_play_lo
     inner_scanline
-    audio_play_hi
+    ;audio_play_hi
 
     lda VCOUNT
+    tay ; save for audio lookup
     cmp #130 ;#130
     bne each_scanline
     audio_inc