diff --git a/bitwise/README.txt b/bitwise/README.txt
new file mode 100644
index 0000000..07597b7
--- /dev/null
+++ b/bitwise/README.txt
@@ -0,0 +1,4 @@
+bitwise
+=======
+
+Following along with [bitwise](https://github.com/pervognsen/bitwise).
\ No newline at end of file
diff --git a/bitwise/ion/Makefile b/bitwise/ion/Makefile
index 1c0c449..ce73c05 100644
--- a/bitwise/ion/Makefile
+++ b/bitwise/ion/Makefile
@@ -2,11 +2,15 @@ TARGET :=	ion
 OBJS :=		$(TARGET).o
 CFLAGS :=	-g -std=c99 -Wall -Werror
 
-all: $(TARGET)
+.PHONY: all run
+all: run
+	
+run:$(TARGET)
+	./$(TARGET)
 
 $(TARGET): $(OBJS)
 	$(CC) $(CFLAGS) -o $@ $(OBJS)
 
 .PHONY: clean
 clean:
-	rm -f $(OBJS) $(TARGET)
\ No newline at end of file
+	rm -f $(OBJS) $(TARGET)
diff --git a/bitwise/ion/ion.c b/bitwise/ion/ion.c
index 3fa915f..1dc7edb 100644
--- a/bitwise/ion/ion.c
+++ b/bitwise/ion/ion.c
@@ -1,4 +1,5 @@
 #include <assert.h>
+#include <ctype.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -62,7 +63,7 @@ buf_test(void)
 	printf("OK\n");
 }
 typedef enum TokenKind {
-	TOKEN_INT,
+	TOKEN_INT = 128,
 	TOKEN_NAME,
 	// ...
 } TokenKind;
@@ -72,6 +73,8 @@ typedef struct Token {
 	// ...
 } Token;
 
+const char *stream;
+
 Token token;
 void next_token(void) {
 	switch (*stream) {
@@ -91,14 +94,26 @@ void next_token(void) {
 		token.kind = TOKEN_INT;
 		break;
 	default:
-		token.kind = *stream;
+		token.kind = *stream++;
 		break;
 	}
 }
 
+void lex_test()
+{
+	char source[] = "+()123456+994";
+	stream = source;
+	next_token();
+	while (token.kind) {
+		printf("TOKEN: %d\n", token.kind);
+		next_token();
+	}
+}
+
 int
 main(int argc, char *argv[])
 {
 	buf_test();
+	lex_test();
 	return 0;
 }
\ No newline at end of file
diff --git a/bitwise/ion/notes.txt b/bitwise/ion/notes.txt
index 87f1038..b085c45 100644
--- a/bitwise/ion/notes.txt
+++ b/bitwise/ion/notes.txt
@@ -17,4 +17,4 @@ stretch buffers:
   + ex. '1234 (x+y)' translates to '1234' '(' 'x' '+' 'y' ')'
   + no semantics yet
   + simple hand-written approach
-  + mark: 1:06:11
\ No newline at end of file
+  + mark: 1:09:11
\ No newline at end of file