diff --git a/Machines/Apple/AppleIIgs/Sound.cpp b/Machines/Apple/AppleIIgs/Sound.cpp
index 6e9b6e9d4..b7d51e7c5 100644
--- a/Machines/Apple/AppleIIgs/Sound.cpp
+++ b/Machines/Apple/AppleIIgs/Sound.cpp
@@ -15,7 +15,14 @@
 
 using namespace Apple::IIgs::Sound;
 
-GLU::GLU(Concurrency::DeferringAsyncTaskQueue &audio_queue) : audio_queue_(audio_queue) {}
+GLU::GLU(Concurrency::DeferringAsyncTaskQueue &audio_queue) : audio_queue_(audio_queue) {
+	// Reset all pending stores.
+	MemoryWrite disabled_write;
+	disabled_write.enabled = false;
+	for(int c = 0; c < StoreBufferSize; c++) {
+		pending_stores_[c].store(disabled_write);
+	}
+}
 
 void GLU::set_data(uint8_t data) {
 	if(local_.control & 0x40) {
diff --git a/Machines/Apple/AppleIIgs/Sound.hpp b/Machines/Apple/AppleIIgs/Sound.hpp
index 4ef9b0bef..609de9434 100644
--- a/Machines/Apple/AppleIIgs/Sound.hpp
+++ b/Machines/Apple/AppleIIgs/Sound.hpp
@@ -50,8 +50,6 @@ class GLU: public Outputs::Speaker::SampleSource {
 		// Assumed: on most modern architectures, an atomic 64-bit read or
 		// write can be achieved locklessly.
 		struct MemoryWrite {
-			MemoryWrite() : enabled(false) {}
-
 			uint32_t time;
 			uint16_t address;
 			uint8_t value;
diff --git a/Machines/Apple/AppleIIgs/Video.cpp b/Machines/Apple/AppleIIgs/Video.cpp
index 36bd6caa2..9614d2f4e 100644
--- a/Machines/Apple/AppleIIgs/Video.cpp
+++ b/Machines/Apple/AppleIIgs/Video.cpp
@@ -388,10 +388,10 @@ uint16_t *VideoBase::output_super_high_res(uint16_t *target, int start, int end,
 	if(line_control_ & 0x80) {
 		for(int c = start * 4; c < end * 4; c++) {
 			const uint8_t source = ram_[row_address + c];
-			target[0] =  palette_[0x8 + (source >> 6) & 0x3];
-			target[1] =  palette_[0xc + (source >> 4) & 0x3];
-			target[2] =  palette_[0x0 + (source >> 2) & 0x3];
-			target[3] =  palette_[0x4 + (source >> 0) & 0x3];
+			target[0] =  palette_[0x8 + ((source >> 6) & 0x3)];
+			target[1] =  palette_[0xc + ((source >> 4) & 0x3)];
+			target[2] =  palette_[0x0 + ((source >> 2) & 0x3)];
+			target[3] =  palette_[0x4 + ((source >> 0) & 0x3)];
 			target += 4;
 		}
 	} else {