diff --git a/OSBindings/Mac/Clock SignalTests/TIATests.mm b/OSBindings/Mac/Clock SignalTests/TIATests.mm
index 412f54a55..5ebaee5fe 100644
--- a/OSBindings/Mac/Clock SignalTests/TIATests.mm	
+++ b/OSBindings/Mac/Clock SignalTests/TIATests.mm	
@@ -29,6 +29,15 @@ static void receive_line(uint8_t *next_line)
 	std::function<void(uint8_t *)> function = receive_line;
 	_tia.reset(new Atari2600::TIA(function));
 	line = nullptr;
+
+	_tia->set_playfield(0, 0x00);
+	_tia->set_playfield(1, 0x00);
+	_tia->set_playfield(2, 0x00);
+	_tia->set_player_graphic(0, 0x00);
+	_tia->set_player_graphic(1, 0x00);
+	_tia->set_ball_enable(false);
+	_tia->set_missile_enable(0, false);
+	_tia->set_missile_enable(1, false);
 }
 
 - (void)testReflectedPlayfield
@@ -60,8 +69,8 @@ static void receive_line(uint8_t *next_line)
 	_tia->set_playfield(0, 0x10);
 	_tia->set_playfield(1, 0xf0);
 	_tia->set_playfield(2, 0x0e);
-	_tia->run_for_cycles(228);
 
+	_tia->run_for_cycles(228);
 	XCTAssert(line != nullptr, @"228 cycles should have ended the line");
 
 	uint8_t expected_line[] = {
@@ -75,4 +84,36 @@ static void receive_line(uint8_t *next_line)
 	XCTAssert(!memcmp(expected_line, line, sizeof(expected_line)));
 }
 
+- (void)testSinglePlayer
+{
+	// set a player graphic, reset position so that it'll appear from column 1
+	_tia->set_player_graphic(0, 0xff);
+	_tia->set_player_position(0);
+
+	_tia->run_for_cycles(228);
+	uint8_t first_expected_line[] = {
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+	};
+	XCTAssert(line != nullptr, @"228 cycles should have ended the line");
+	XCTAssert(!memcmp(first_expected_line, line, sizeof(first_expected_line)));
+	line = nullptr;
+
+	_tia->run_for_cycles(228);
+	uint8_t second_expected_line[] = {
+		0, 4, 4, 4,		4, 4, 4, 4,		4, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
+	};
+	XCTAssert(line != nullptr, @"228 cycles should have ended the line");
+	XCTAssert(!memcmp(second_expected_line, line, sizeof(second_expected_line)));
+}
+
 @end