Added a new "save" command to the monitor.

CHANGES.txt

@@ -29,6 +29,9 @@ Next Release
     Overflow (V) flag.  This fixes a failure in Rob Finch's test suite.
     Closes #6.
 
+  - A new "save" command has been added to the monitor that will save
+    a range of memory to a binary file.
+
 0.6 (2009-08-11)
 
   - Added monitor shortcut "a" for "assemble".

src/py65/monitor.py

@@ -62,6 +62,7 @@ class Monitor(cmd.Cmd):
                            'r':   'registers',
                            'ret': 'return',
                            'rad': 'radix',
+                           's':   'save',
                            'shl': 'show_labels',
                            'x':   'quit',
                            'z':   'step'}
@@ -410,6 +411,34 @@ class Monitor(cmd.Cmd):
             return
 
         self._fill(start, start, map(ord, bytes))
+
+    def do_save(self, args):
+        split = shlex.split(args)
+        if len(split) != 3:
+            self._output("Syntax error: %s" % args)
+            return
+        
+        filename = split[0]
+        start = self._address_parser.number(split[1])
+        end   = self._address_parser.number(split[2])
+        
+        bytes = self._mpu.memory[start:end+1]
+        try:
+            f = open(filename, 'wb')
+            for byte in bytes:
+                f.write(chr(byte))
+            f.close()
+        except (OSError, IOError), why:
+            msg = "Cannot save file: [%d] %s" % (why[0], why[1])
+            self._output(msg)
+            return
+        
+        self._output("Saved +%d bytes to %s" % (len(bytes), filename))    
+
+    def help_save(self):
+        self._output("save \"filename\" <start> <end>")
+        self._output("Save the specified memory range to disk as a binary file.")
+        self._output("Commodore-style load address bytes are not written.")
     
     def help_fill(self):
         self._output("fill <address_range> <data_list>")

src/py65/tests/test_monitor.py

@@ -2,6 +2,7 @@ import unittest
 import sys
 import re
 import os
+import tempfile
 from py65.monitor import Monitor
 from StringIO import StringIO
 
@@ -247,6 +248,34 @@ class MonitorTests(unittest.TestCase):
         out = stdout.getvalue()
         self.assertTrue(out.startswith("reset\t"))        
 
+    def test_save_with_less_than_three_args_syntax_error(self):
+        stdout = StringIO()
+        mon = Monitor(stdout=stdout)
+        mon.do_save('filename start')
+        out = stdout.getvalue()
+        self.assertTrue(out.startswith('Syntax error'))  
+        
+    def test_save(self):
+        stdout = StringIO()
+        mon = Monitor(stdout=stdout)
+        mon._mpu.memory[0:3] = [0xAA, 0xBB, 0xCC]
+
+        f = tempfile.NamedTemporaryFile()
+        mon.do_save("'%s' 0 2" % f.name)
+        f.seek(0)
+        self.assertEqual(chr(0xAA) + chr(0xBB) + chr(0xCC),
+                         f.read())
+        self.assertEqual('Saved +3 bytes to %s\n' % f.name, 
+                         stdout.getvalue())
+        f.close()                     
+
+    def test_help_save(self):
+        stdout = StringIO()
+        mon = Monitor(stdout=stdout)
+        mon.help_save()
+        out = stdout.getvalue()
+        self.assertTrue(out.startswith('save'))        
+
     # tilde
 
     def test_tilde_shortcut_with_space(self):