diff --git a/MC6809/test/Board.cpp b/MC6809/test/Board.cpp
index f108057..37d5337 100644
--- a/MC6809/test/Board.cpp
+++ b/MC6809/test/Board.cpp
@@ -87,10 +87,10 @@ void Board::Bus_ReadingByte_Acia(EightBit::EventArgs&) {
 void Board::updateAciaPins(const EightBit::Chip::PinLevel rw) {
 	ACIA().RW() = rw;
 	ACIA().DATA() = DATA();
-	ADDRESS().word & EightBit::Chip::Bit0 ? ACIA().raise(ACIA().RS()) : ACIA().lower(ACIA().RS());
-	ADDRESS().word & EightBit::Chip::Bit15 ? ACIA().raise(ACIA().CS0()) : ACIA().lower(ACIA().CS0());
-	ADDRESS().word & EightBit::Chip::Bit13 ? ACIA().raise(ACIA().CS1()) : ACIA().lower(ACIA().CS1());
-	ADDRESS().word & EightBit::Chip::Bit14 ? ACIA().raise(ACIA().CS2()) : ACIA().lower(ACIA().CS2());
+	ACIA().match(ACIA().RS(), ADDRESS().word & EightBit::Chip::Bit0);
+	ACIA().match(ACIA().CS0(), ADDRESS().word & EightBit::Chip::Bit15);
+	ACIA().match(ACIA().CS1(), ADDRESS().word & EightBit::Chip::Bit13);
+	ACIA().match(ACIA().CS2(), ADDRESS().word & EightBit::Chip::Bit14);
 }
 
 void Board::Cpu_ExecutedInstruction_Terminator(EightBit::mc6809&) {
diff --git a/inc/Chip.h b/inc/Chip.h
index 5bf7dfe..36c868f 100644
--- a/inc/Chip.h
+++ b/inc/Chip.h
@@ -64,6 +64,8 @@ namespace EightBit {
 		static bool lowered(const PinLevel line) { return line == Low; }
 		static void lower(PinLevel& line) { line = Low; }
 
+		static void match(PinLevel& line, int value);
+
 		static int highNibble(const int value) { return value >> 4; }
 		static int lowNibble(const int value) { return value & Mask4; }
 
diff --git a/src/Chip.cpp b/src/Chip.cpp
index 0d9aa64..1cff8c7 100644
--- a/src/Chip.cpp
+++ b/src/Chip.cpp
@@ -3,4 +3,8 @@
 
 void EightBit::Chip::powerOn() {
 	raise(POWER());
-}
\ No newline at end of file
+}
+
+void EightBit::Chip::match(PinLevel& line, int value) {
+	value ? raise(line) : lower(line);
+}