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MAME Default Keys

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

Key
Action
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
* Left - decrease the value of the selected parameter
* Right - increase the value of the selected parameter
* Enter - reset parameter value to its default
* Control+Left - decrease the value by 10x
* Shift+Left - decrease the value by 0.1x
* Alt+Left - decrease the value by the smallest amount
* 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 sends a ‘break’ in emulation.
P
Pauses the game.
Shift+P
While paused, advances to next frame. If rewind is enabled, a new rewind save state is also captured.
Shift+~
While paused, loads the most recent rewind save state.
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 the reset
you get from hitting 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] - Toggles keeping aspect ratio.
LCtrl+F5
[SDL ONLY] - Toggle Filter.
Alt+Ctrl+F5
[NON SDL MS WINDOWS ONLY] - 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] Fast forward. While held, runs game with
throttling disabled and with the maximum frameskip.
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 users 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 as presented upon start by using
-ui_active as detailed below.
Escape
Exits emulator.

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