Changed __repr__ of MPU objects to show flags in binary.

CHANGES.txt

@@ -10,6 +10,9 @@ Next Release
     in the monitor using the "registers" command with an argument of
     "p", such as "registers p=00".
 
+  - MPU objects now return a two-line string as their __repr__ with 
+    the processor status register displayed as binary for readability.  
+
 0.6 (2009-08-11)
 
   - Added monitor shortcut "a" for "assemble".

src/py65/devices/mpu6502.py

@@ -1,5 +1,6 @@
-from py65.utils.conversions import convert_to_bin, convert_to_bcd
+from py65.utils.conversions import convert_to_bin, convert_to_bcd, itoa
 from py65.utils.devices import make_instruction_decorator
+from os import linesep
 
 class MPU:
   # vectors
@@ -36,9 +37,14 @@ class MPU:
     self.reset()
 
   def __repr__(self):
-    out = '<%s: A=%02x, X=%02x, Y=%02x, Flags=%02x, SP=%02x, PC=%04x>'
-    return out % (self.name, self.a, self.x, self.y,
-                  self.flags, self.sp, self.pc)
+    flags  = itoa(self.flags, 2).rjust(8, '0')
+    indent = ' ' * (len(self.name) + 2)
+
+    out = "%s PC  AC XR YR SP NV-BDIZC" + linesep + \
+          "%s: %04x %02x %02x %02x %02x %s" 
+    
+    return out % (indent, self.name, 
+                  self.pc, self.a, self.x, self.y, self.pc, flags)
 
   def step(self):
     instructCode = self.ImmediateByte()

src/py65/tests/devices/test_mpu6502.py

@@ -4750,8 +4750,7 @@ class MPUTests(unittest.TestCase, Common6502Tests):
 
     def test_repr(self):
         mpu = self._make_mpu()
-        self.assertEquals('<6502: A=00, X=00, Y=00, Flags=20, SP=ff, PC=0000>',
-                           repr(mpu))
+        self.assert_("6502" in repr(mpu))
 
     def test_stz_not_supported(self):
         mpu = self._make_mpu(debug=True)

src/py65/tests/devices/test_mpu65c02.py

@@ -9,8 +9,7 @@ class MPUTests(unittest.TestCase, Common6502Tests):
 
     def test_repr(self):
         mpu = self._make_mpu()
-        self.assertEquals('<65C02: A=00, X=00, Y=00, Flags=20, SP=ff, PC=0000>',
-                          repr(mpu))
+        self.assert_('65C02' in repr(mpu))
 
     # ADC Zero Page, Indirect