diff --git a/OSBindings/Mac/Clock SignalTests/x86DecoderTests.mm b/OSBindings/Mac/Clock SignalTests/x86DecoderTests.mm
index 9e7857364..0bd6bf67b 100644
--- a/OSBindings/Mac/Clock SignalTests/x86DecoderTests.mm	
+++ b/OSBindings/Mac/Clock SignalTests/x86DecoderTests.mm	
@@ -38,22 +38,33 @@ namespace {
 - (void)decode:(const std::initializer_list<uint8_t> &)stream {
 	CPU::Decoder::x86::Decoder decoder(CPU::Decoder::x86::Model::i8086);
 
-	// Start with a very dumb implementation: post one byte at a time.
+	// TODO: test that byte-at-a-time decoding gives the same results, as a freebie.
+//	instructions.clear();
+//	for(auto item: stream) {
+//		const auto next = decoder.decode(&item, 1);
+//		if(next.size() > 0) {
+//			instructions.push_back(next);
+//		}
+//	}
+
 	instructions.clear();
-	for(auto item: stream) {
-		const auto next = decoder.decode(&item, 1);
-		if(next.size() > 0) {
-			instructions.push_back(next);
-		}
+	const uint8_t *byte = stream.begin();
+	while(byte != stream.end()) {
+		const auto next = decoder.decode(byte, stream.end() - byte);
+		if(next.size() <= 0) break;
+		instructions.push_back(next);
+		byte += next.size();
 	}
 }
 
 // MARK: - Tests
 
 - (void)testSequence1 {
+	// 0x6a 0x65 decodes as PUSH $65 in Online Disassembler; The 8086 Book doesn't seem to think that's
+	// valid. So I've manually omitted it below.
 	[self decode:{
 		0x2d, 0x77, 0xea, 0x72, 0xfc, 0x4b, 0xb5, 0x28, 0xc3, 0xca, 0x26, 0x48, 0x65, 0x6d, 0x7b, 0x9f,
-		0xc2, 0x65, 0x42, 0x4e, 0xef, 0x70, 0x20, 0x94, 0xc4, 0xd4, 0x93, 0x43, 0x3c, 0x8e, 0x6a, 0x65,
+		0xc2, 0x65, 0x42, 0x4e, 0xef, 0x70, 0x20, 0x94, 0xc4, 0xd4, 0x93, 0x43, 0x3c, 0x8e, /* 0x6a, 0x65, */
 		0x1a, 0x78, 0x45, 0x10, 0x7f, 0x3c, 0x19, 0x5a, 0x16, 0x31, 0x64, 0x2c, 0xe7, 0xc6, 0x7d, 0xb0,
 		0xb5, 0x49, 0x67, 0x61, 0xba, 0xc0, 0xcb, 0x14, 0x7e, 0x71, 0xd0, 0x50, 0x78, 0x3d, 0x03, 0x1d,
 		0xe5, 0xc9, 0x97, 0xc3, 0x9b, 0xe6, 0xd3, 0x6c, 0x58, 0x4d, 0x76, 0x80, 0x44, 0xd6, 0x9f, 0xa5,
@@ -63,7 +74,7 @@ namespace {
 	}];
 
 	// 68 instructions are expected.
-	XCTAssertEqual(instructions.size(), 68);
+	XCTAssertEqual(instructions.size(), 67);
 
 	// sub    $0xea77,%ax
 	// jb     0x00000001