From 7320f96ae76472e723f7962c8c96b476de029ffb Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Sat, 4 Dec 2021 18:02:43 -0500
Subject: [PATCH] Capture attachment flags.

---
 Machines/Amiga/Audio.cpp | 11 ++++++++++-
 Machines/Amiga/Audio.hpp |  4 ++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Machines/Amiga/Audio.cpp b/Machines/Amiga/Audio.cpp
index 3c2520911..08c9d0fbe 100644
--- a/Machines/Amiga/Audio.cpp
+++ b/Machines/Amiga/Audio.cpp
@@ -60,7 +60,16 @@ void Audio::set_channel_enables(uint16_t enables) {
 	channels_[3].dma_enabled = enables & 8;
 }
 
-void Audio::set_modulation_flags(uint16_t) {
+void Audio::set_modulation_flags(uint16_t flags) {
+	channels_[3].attach_period = flags & 0x80;
+	channels_[2].attach_period = flags & 0x40;
+	channels_[1].attach_period = flags & 0x20;
+	channels_[0].attach_period = flags & 0x10;
+
+	channels_[3].attach_volume = flags & 0x08;
+	channels_[2].attach_volume = flags & 0x04;
+	channels_[1].attach_volume = flags & 0x02;
+	channels_[0].attach_volume = flags & 0x01;
 }
 
 void Audio::set_interrupt_requests(uint16_t requests) {
diff --git a/Machines/Amiga/Audio.hpp b/Machines/Amiga/Audio.hpp
index 685ef48c0..e78872178 100644
--- a/Machines/Amiga/Audio.hpp
+++ b/Machines/Amiga/Audio.hpp
@@ -85,6 +85,10 @@ class Audio: public DMADevice<4> {
 			uint16_t period = 0;
 			uint16_t period_counter = 0;
 
+			// Modulation / attach flags.
+			bool attach_period = false;
+			bool attach_volume = false;
+
 			// Output volume, [0, 64].
 			uint8_t volume;