From d96040f5ac5eb47b5ba8204b3226223d34be09b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Magalh=C3=A3es?= <joamag@gmail.com>
Date: Sun, 21 May 2023 23:29:59 +0100
Subject: [PATCH] chore: add not used APU registers
---
src/apu.rs | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/apu.rs b/src/apu.rs
index fbb331b2..18190557 100644
--- a/src/apu.rs
+++ b/src/apu.rs
@@ -339,6 +339,8 @@ impl Apu {
| ((self.ch1_volume & 0x0f) << 4)
}
+ // 0xFF15 — Not used
+ 0xff15 => 0xff,
// 0xFF16 — NR21: Channel 2 length timer & duty cycle
0xff16 => (self.ch2_wave_duty & 0x03) << 6,
// 0xFF17 — NR22: Channel 2 volume & envelope
@@ -361,6 +363,8 @@ impl Apu {
// 0xFF1C — NR32: Channel 3 output level
0xff1c => (self.ch3_output_level & 0x03) << 5,
+ // 0xFF1F — Not used
+ 0xff1f => 0xff,
// 0xFF20 — NR41: Channel 4 length timer
0xff20 => 0x00,
// 0xFF21 — NR42: Channel 4 volume & envelope
@@ -436,6 +440,8 @@ impl Apu {
}
}
+ // 0xFF15 — Not used
+ 0xff15 => (),
// 0xFF16 — NR21: Channel 2 length timer & duty cycle
0xff16 => {
self.ch2_length_timer = value & 0x3f;
@@ -501,6 +507,8 @@ impl Apu {
}
}
+ // 0xFF1F — Not used
+ 0xff1f => (),
// 0xFF20 — NR41: Channel 4 length timer
0xff20 => {
self.ch4_length_timer = value & 0x3f;
--
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