reimplemented ystart (TODO: GameInfoDialog)

docs/index.html

@@ -1514,16 +1514,29 @@
 
     <tr>
       <td>Increase overscan in fullscreen mode</td>
+      <td>Shift + PageUp</td>
+      <td>Shift + PageUp</td>
+    </tr>
+
+    <tr>
+      <td>Decrease overscan in fullscreen mode</td>
+      <td>Shift + PageDown</td>
+      <td>Shift + PageDown</td>
+    </tr>
+
+    <tr>
+      <td>Move display <i>up</i> (uses "Display.YStart")</td>
       <td>Alt + PageUp</td>
       <td>Cmd + PageUp</td>
     </tr>
 
     <tr>
-      <td>Decrease overscan in fullscreen mode</td>
+      <td>Move display <i>down</i> (uses "Display.YStart")</td>
       <td>Alt + PageDown</td>
       <td>Cmd + PageDown</td>
     </tr>
 
+
     <tr>
       <td>Switch display format in <i>increasing</i> order (NTSC/PAL/SECAM etc.)</td>
       <td>Control + f</td>
@@ -3718,6 +3731,19 @@ Ms Pac-Man (Stella extended codes):
       <b>PAL60</b> or <b>SECAM60</b>.</td>
     </tr>
 
+      <td VALIGN="TOP"><i>Display.Format:</i></td>
+      <td>Indicates the television format the game was designed for. The value
+      must be <b>Auto</b>, <b>NTSC</b>, <b>PAL</b>, <b>SECAM</b>, <b>NTSC50</b>,
+      <b>PAL60</b> or <b>SECAM60</b>.</td>
+    </tr>
+
+    <tr>
+      <td VALIGN="TOP"><i>Display.YStart:</i></td>
+      <td>Indicates the scan-line to start displaying at.
+      The value must be <i>n</i> such that 0 &lt;= <i>n</i> &lt;= 64.
+      </td>
+    </tr>
+
     <tr>
       <td VALIGN="TOP"><i>Display.Phosphor:</i></td>
       <td>Indicates whether the phosphor effect should be emulated or not.

src/common/PKeyboardHandler.cxx

@@ -431,13 +431,15 @@ PhysicalKeyboardHandler::EventMappingArray PhysicalKeyboardHandler::DefaultCommo
 
   {Event::VidmodeDecrease,          KBDK_MINUS, MOD3},
   {Event::VidmodeIncrease,          KBDK_EQUALS, MOD3},
+  {Event::DecreaseYStart,           KBDK_PAGEUP, MOD3},
+  {Event::IncreaseYStart,           KBDK_PAGEDOWN, MOD3},
   {Event::VolumeDecrease,           KBDK_LEFTBRACKET, MOD3},
   {Event::VolumeIncrease,           KBDK_RIGHTBRACKET, MOD3},
   {Event::SoundToggle,              KBDK_RIGHTBRACKET, KBDM_CTRL},
 
   {Event::ToggleFullScreen,         KBDK_RETURN, MOD3},
-  {Event::DecreaseOverscan,         KBDK_PAGEDOWN, MOD3},
-  {Event::IncreaseOverScan,         KBDK_PAGEUP, MOD3},
+  {Event::DecreaseOverscan,         KBDK_PAGEDOWN, KBDM_SHIFT},
+  {Event::IncreaseOverScan,         KBDK_PAGEUP, KBDM_SHIFT},
   {Event::VidmodeStd,               KBDK_1, MOD3},
   {Event::VidmodeRGB,               KBDK_2, MOD3},
   {Event::VidmodeSVideo,            KBDK_3, MOD3},

src/emucore/Event.hxx

@@ -120,6 +120,8 @@ class Event
       CompuMateQuote, CompuMateBackspace, CompuMateEquals, CompuMatePlus,
       CompuMateSlash,
 
+      DecreaseYStart, IncreaseYStart,
+
       LastType
 
     };

src/emucore/EventHandler.cxx

@@ -419,6 +419,14 @@ void EventHandler::handleEvent(Event::Type event, Int32 value, bool repeated)
       if(pressed) myOSystem.frameBuffer().changeVidMode(+1);
       return;
 
+    case Event::DecreaseYStart:
+      if (pressed) myOSystem.console().changeYStart(-1); 
+      return;
+
+    case Event::IncreaseYStart:
+      if (pressed) myOSystem.console().changeYStart(+1);
+      return;
+
     case Event::ToggleFullScreen:
       if (pressed && !repeated) myOSystem.frameBuffer().toggleFullscreen();
       return;
@@ -1824,6 +1832,8 @@ EventHandler::EmulActionList EventHandler::ourEmulActionList = { {
   { Event::IncreaseOverScan,        "Increase overscan in fullscreen mode",  "" },
   { Event::DecreaseFormat,          "Decrease display format",               "" },
   { Event::IncreaseFormat,          "Increase display format",               "" },
+  { Event::DecreaseYStart,          "Move display up",                       "" },
+  { Event::IncreaseYStart,          "Move display down",                     "" },
   { Event::TogglePalette,           "Switch palette (Standard/Z26/User)",    "" },
 
   // TV effects:
@@ -1949,6 +1959,7 @@ const Event::EventSet EventHandler::AudioVideoEvents = {
   Event::ScanlinesDecrease, Event::ScanlinesIncrease,
   Event::DecreasePhosphor, Event::IncreasePhosphor, Event::TogglePhosphor,
   Event::DecreaseFormat, Event::IncreaseFormat,
+  Event::DecreaseYStart, Event::IncreaseYStart,
   Event::DecreaseOverscan, Event::IncreaseOverScan,
   Event::TogglePalette,
 };

src/emucore/EventHandler.hxx

@@ -464,7 +464,7 @@ class EventHandler
     #else
       PNG_SIZE             = 0,
     #endif
-      EMUL_ACTIONLIST_SIZE = 138 + PNG_SIZE + COMBO_SIZE,
+      EMUL_ACTIONLIST_SIZE = 140 + PNG_SIZE + COMBO_SIZE,
       MENU_ACTIONLIST_SIZE = 18
     ;