diff --git a/asm/creole.py b/asm/creole.py
index a614701..e323432 100644
--- a/asm/creole.py
+++ b/asm/creole.py
@@ -72,10 +72,10 @@ class Argument:
 class StringArgument(Argument):
 	def __init__(self, *args, **kwargs):
 		super().__init__(*args, **kwargs)
-	def __bytes__(self):
+	def __call__(self):
 		b = bytes()
 		for v in self.val:
-			b = b + Argument(ArgType.IMM, v)()
+			b = b + Argument(ArgType.IMM, int(v, base=16))()
 		return b
 
 class LabelArgument(Argument):
@@ -350,6 +350,19 @@ class Line:
 
 class InstructionNotFoundException(Exception):
 	pass
+
+def _term_sep(s):
+	""" Split up the arguments of an instruction.
+	OP arg1 arg2 [data,data,data,...]
+	"""
+
+	s = s.strip()
+	s_data = s.split('[')
+	if len(s_data) == 2:
+		return s_data[0].split() + [s_data[1].rstrip('] \t\n\r\v').split(',')]
+	else:
+		return s.split()
+
 class Program:
 	def _asm_push_line(self, ins, args):
 		l = Line(ins, args)
@@ -361,7 +374,7 @@ class Program:
 		:param line: String containing the line.
 		:raises InstructionNotFoundException:
 		"""
-		line = line.strip().split()
+		line = _term_sep(line)
 		line[0] = line[0].casefold()
 		if line[0][0] == '.':
 			self.asm.append(line[0])
diff --git a/asm/test.py b/asm/test.py
index 4ab05e6..e49d46d 100644
--- a/asm/test.py
+++ b/asm/test.py
@@ -433,6 +433,12 @@ class ProgramTest(unittest.TestCase):
 		self.range_test(0x7FFFF00, 0x8000000, sgn=True)
 		self.range_test(-100, 0, sgn=True)
 
+class DataTest(unittest.TestCase):
+	def test_parse_db(self):
+		p = Program()
+		p.parse_asm_line("db d0 [4d2,1234,0,5]")
+		self.assertEqual(p(), b'\x0b\xc0\x80\xe0\x93\x92\xf0\x81\x88\xb4\xc0\x80\xc0\x85\x00')
+
 class SCEnv(ffi.Environment):
 	def syscall(self, s):
 		self.s = s.value