updated change log and documentation for RWP

Changes.txt

@@ -106,6 +106,10 @@
   * Added 'Cartridge.StartBank' ROM property, to force a ROM to use a
     specific bank for its reset vector.
 
+  * Improved snapshots when phosphor is enabled
+
+  * Added Developer setting, which breaks on reads from write ports
+
   * Added recently released 'Arkyology' prototype ROM to the database.
 
   * Fixed 'Street Racer' and 'Video Olympics' ROMs to use paddles in both

docs/index.html

@@ -2538,9 +2538,15 @@
       <td><pre>-&lt;plr.|dev.&gt;tiadriven &lt;1|0&gt;</pre></td>
       <td>Set unused TIA pins to be randomly driven high or low on a read/peek.
           If disabled, use the last databus value for those pins instead.</td>
+    </tr><tr>
+      <td><pre>-&lt;plr.|dev.&gt;rwportbreak &lt;1|0&gt;</pre></td>
+      <td>Since the 2600 has no dedicated R/W line, different addresses are used
+	    for RAM read or write access. If the code reads from such a write address, this causes
+		an unwanted, semi-random write to that address.
+		When this option is enabled, such reads interrupt emulation and the debugger is entered.</td>
     </tr><tr>
       <td><pre>-&lt;plr.|dev.&gt;thumb.trapfatal &lt;1|0&gt;</pre></td>
-      <td>The default of true allows the Thumb ARM emulation to
+      <td>When enabled, this allows the Thumb ARM emulation to
         throw an exception and enter the debugger on fatal errors. When disabled, such
         fatal errors are simply logged, and emulation continues. Do not use this
         unless you know exactly what you're doing, as it changes the behaviour as
@@ -3110,6 +3116,11 @@
           <tr><td>Randomize zero-page ...</td><td>When loading a ROM, randomize all RAM content instead of initializing with all zeroes (for 'Console' = 'Atari 2600' only)</td><td>-plr.ramrandom<br/>-dev.ramrandom</td></tr>
           <tr><td>Randomize CPU</td><td>When loading a ROM, randomize the content of the specified CPU registers</td><td>-plr.cpurandom<br/>-dev.cpurandom</td></tr>
           <tr><td>Drive unused TIA pins ...</td><td>Unused TIA pins are read random instead of the last databus values</td><td>-plr.tiadriven<br/>-dev.tiadriven</td></tr>
+          <tr>
+            <td>Break on reads from ...</td>
+            <td>A read from a write port interrupts emulation and the debugger is entered.</td>
+            <td><span style="white-space:nowrap">-plr.rwportbreak<br/>-dev.rwportbreak</span></td>
+          </tr>
           <tr>
             <td>Fatal ARM emulation ...</td>
             <td>Thumb ARM emulation throws an exception and enters the debugger on fatal errors</td>