thanks Hugh for these fixes

2 files changed, 2 insertions, 1 deletions

diff --git a/makefile b/makefile
index 60f7f65..b352f37 100644
--- a/makefile
+++ b/makefile
@@ -1,6 +1,7 @@
 SDL = -L/usr/lib -lSDL2
 
 interpreter:
+	mkdir build
 	gcc src/interpreter.c -o build/testing
 
 clean:
diff --git a/src/cpu/6502.c b/src/cpu/6502.c
index 5aaffef..672ead3 100644
--- a/src/cpu/6502.c
+++ b/src/cpu/6502.c
@@ -29,7 +29,7 @@ void flagClear(byte flag){
 //	Functions which perform reusable routines for finding if a specific flag should be set.
 
 void setFlagN(byte x){
-	if (x & flag_N == flag_N)
+	if ((x & flag_N) == flag_N)
 		setFlag(flag_N, 1);
 	else
 		setFlag(flag_N, 0);