Default Keys
------------

All the keys below are fully configurable in the user interface. This list
shows the standard keyboard configuration.

Tab       Toggles the configuration menu.

~         Toggles the On Screen Display. When the on-screen display is
          visible, you can use the following keys to control it:

             Up - select previous parameter to modify
             Down - select next parameter to modify
             Enter - reset parameter value to its default

             Left - decrease the value of the selected parameter
             Control+Left - decrease the value by 10x
             Shift+Left - decrease the value by 0.1x
             Alt+Left - decrease the value by the smallest amount

             Right - increase the value of the selected parameter
             Control+Right - increase the value by 10x
             Shift+Right - increase the value by 0.1x
             Alt+Right - increase the value by the smallest amount

          If you are running with -debug, this key send a 'break'
          in emulation.

P         Pauses the game.

Shift+P   While paused, advances to next frame.

F2        Service Mode for games that support it.

F3        Resets the game.

Shift+F3  Performs a "hard reset", which tears everything down and re-
          creates it from scratch. This is a more thorough and complete
          reset than an F3.

LCtrl+F3  [SDL ONLY]
          Toggle Uneven stretch.

F4        Shows the game palette, decoded GFX, and any tilemaps. Use the
          Enter key to switch between the three modes (palette, graphics,
          and tilemaps). Press F4 again to turn off the display. The key
          controls in each mode vary slightly:

             * Palette/colortable mode:
                [ ] - switch between palette and colortable modes
                Up/Down - scroll up/down one line at a time
                Page Up/Page Down - scroll up/down one page at a time
                Home/End - move to top/bottom of list
                -/+ - increase/decrease the number of colors per row
                Enter - switch to graphics viewer

             * Graphics mode:
                [ ] - switch between different graphics sets
                Up/Down - scroll up/down one line at a time
                Page Up/Page Down - scroll up/down one page at a time
                Home/End - move to top/bottom of list
                Left/Right - change color displayed
                R - rotate tiles 90 degrees clockwise
                -/+ - increase/decrease the number of tiles per row
                Enter - switch to tilemap viewer

             * Tilemap mode:
                [ ] - switch between different tilemaps
                Up/Down/Left/Right - scroll 8 pixels at a time
                Shift+Up/Down/Left/Right - scroll 1 pixel at a time
                Control+Up/Down/Left/Right - scroll 64 pixels at a time
                R - rotate tilemap view 90 degrees clockwise
                -/+ - increase/decrease the zoom factor
                Enter - switch to palette/colortable mode

          Note: Not all games have decoded graphics and/or tilemaps.

LCtrl+F4  [SDL ONLY]
          Toggle Keepaspect ratio.

LCtrl+F5  [SDL ONLY]
          Toggle Filter.

Alt+Ctrl+F5  [WINDOWS ONLY. NON SDL]
          Toggle HLSL Post-Processing.

F6        Toggle cheat mode (if started with "-cheat").

LCtrl+F6  Decrease Prescaling.

F7        Load a save state. You will be requested to press a key to
          determine which save state you wish to load. Note that the save
          state feature is not supported for a large number of drivers. If
          support is not enabled for a given driver, you will receive a
          warning when attempting to save or load.

LCtrl+F7  Increase Prescaling.

Shift+F7  Create a save state. Requires an additional keypress to identify
          the state, similar to the load option above.

F8        Decrease frame skip on the fly.

F9        Increase frame skip on the fly.

F10       Toggle speed throttling.

F11       Toggles speed display.

Shift+F11 Toggles internal profiler display (if compiled in).

Alt+F11   Record HLSL Rendered Video.

F12       Saves a screen snapshot.

Alt+F12   Take HLSL Rendered Snapshot.

Insert    [WINDOW ONLY, NON SDL]
Page DN   [SDL ONLY]
          Fast forward. While held, runs the game with throttling disabled
          and with the maximum frameskip.

Alt+ENTER Toggles between full-screen and windowed mode.

Scroll Lock  Default mapping for the uimodekey.  This key allows user to
          disable and enable the emulated keyboard in machines that require
          it.  All emulations which require emulated keyboards will start in
          that mode and you can only access the internal UI (hitting TAB) by
          first hitting this key.  You can change the initial status of the
          emulated keyboard is presented upon start by using -ui_active trigger
          as detailed below.

Escape    Exits emulator.