From 48a91b96ef77379a3fccba6a981944565cf46aa0 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 8 Dec 2022 06:33:05 -0800
Subject: [PATCH] raw play sorta works

---
 dither4.s   | 11 +++++++++--
 pack-wav.js |  4 ++--
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/dither4.s b/dither4.s
index 713f048..276119b 100644
--- a/dither4.s
+++ b/dither4.s
@@ -158,6 +158,12 @@ wait_loop:
         sty COLPF2
     .endmacro
 
+    .macro audio_play_raw
+        ldy VCOUNT
+        lda (sample_ptr),y ; 5/6 cyc
+        sta AUDC1 ; 4 cyc
+    .endmacro
+
     .macro audio_play_lo
         lda audiotemp ; 3 cyc
         and #$0f ; 2 cyc
@@ -199,9 +205,10 @@ wait_loop:
     .macro run_frame palette1, palette2, palette3
     .scope
     each_scanline_pair:
-        audio_prep
+        ;audio_prep
         inner_scanline palette1, palette2, palette3
-        audio_play_lo
+        audio_play_raw
+        ;audio_play_lo
         inner_scanline palette1, palette2, palette3
         ;audio_play_hi ; too slow
 
diff --git a/pack-wav.js b/pack-wav.js
index 79f1ad0..1bc9cfd 100644
--- a/pack-wav.js
+++ b/pack-wav.js
@@ -24,6 +24,7 @@ function to4bit(val8) {
 
 function pack(audio) {
     let packed = [];
+    /*
     for (let i = 0; i < audio.length; i += 2) {
         // little-endian 4-bit samples
         let low = to4bit(audio[i]);
@@ -31,14 +32,13 @@ function pack(audio) {
         let byte = low | (high << 4);
         packed.push(byte);
     }
-    /*
+    */
     // raw push bytes
     for (let i = 0; i < audio.length; i += 2) {
         let val = to4bit(audio[i]);
         let byte = val | 0x10;
         packed.push(byte);
     }
-    */
     return packed;
 }