From cd2310f0a749499130cd148cafa2386c32491832 Mon Sep 17 00:00:00 2001
From: Lior Halphon <LIJI32@gmail.com>
Date: Fri, 20 Nov 2020 19:39:54 +0200
Subject: [PATCH] Wave RAM reads 0xFF while active on AGBs

---
 Core/apu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Core/apu.c b/Core/apu.c
index 7e7ab31..2b5dc3b 100644
--- a/Core/apu.c
+++ b/Core/apu.c
@@ -596,6 +596,9 @@ uint8_t GB_apu_read(GB_gameboy_t *gb, uint8_t reg)
         if (!GB_is_cgb(gb) && !gb->apu.wave_channel.wave_form_just_read) {
             return 0xFF;
         }
+        if (gb->model == GB_MODEL_AGB) {
+            return 0xFF;
+        }
         reg = GB_IO_WAV_START + gb->apu.wave_channel.current_sample_index / 2;
     }