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DeSmuME
_________________________________________
Copyright (C) 2006 yopyop
Copyright (C) 2006-2015 DeSmuME team
Last Updated: March 28, 2015
Contents:
1) System Requirements ..................................................... 15
2) Quick Start Guide for Using DeSmuME for OS X ............................ 36
3) Additional Documentation ............................................... 201
4) Contact Information .................................................... 231
5) License ................................................................ 333
1) System Requirements ________________________________________________________
DeSmuME is a very demanding app, especially for CPU usage. Before you begin,
make sure that your Mac meets the listed system requirements.
If your Mac meets only the minimum requirements, then you should expect to run
most simple 2D-only games with some frameskip, but you will be unable to run
complex 2D games or any 3D-heavy games. However, if your Mac meets the
recommended requirements, then you should expect to run almost every game,
including very complex 3D-heavy games, with minimal to no frameskip.
Operating System: OS X v10.5 (Leopard) or later
CPU: Can run on any PowerPC G4, G5, or Intel processor
2.1 GHz Intel Core 2 Duo (minimum)
3.0 GHz Intel Core 2 Duo or faster (recommended)
RAM: 512 MB (minimum)
2 GB (recommended)
2) Quick Start Guide for Using DeSmuME for OS X _______________________________
Installing DeSmuME is as easy as copying DeSmuME.app to your Applications
folder (or other folder of your choice). Double-click the app to start DeSmuME.
Note that DeSmuME for OS X may have a different feature set than DeSmuME for
Windows and DeSmuME for Linux. As of this writing, some features that are
present in DeSmuME for Windows are not present in DeSmuME for OS X.
The rest of this section will be a guide to help you quickly get started using
DeSmuME for OS X.
Loading a ROM and Starting the Emulator:
Simply double-click the desired ROM from the Finder to play the game. By
default, DeSmuME will load the ROM and start emulation. Also, there are
additional ROM loading options that you can change in DeSmuME > Preferences if
you need them.
Using the NDS Controller:
Each NDS controller button can be mapped to a button of your choice on your
keyboard, gamepad, or joystick. You can view the mappings by clicking on Input
in DeSmuME > Preferences. To change a mapping, click on the NDS control that you
want to change, then press the button on your input device to map it.
By default, the NDS controller is mapped to the following keys on your keyboard:
Up - Up Arrow
Down - Down Arrow
Left - Left Arrow
Right - Right Arrow
A Button - X
B Button - Z
X Button - S
Y Button - A
L Trigger - Q
R Trigger - W
Start - Return
Select - Tab
Lid - Delete (Backspace)
Microphone (Internal Noise Samples) - ` (Accent)
The NDS can support a variety of SLOT-2 devices. Some devices, such as the
Guitar Grip, EasyPiano, and Taito Paddle have inputs, which are mapped to your
keyboard using these defaults:
Guitar Grip:
Green - E
Red - R
Yellow - T
Blue - Y
EasyPiano:
C - C
C# - F
D - V
D# - G
E - B
F - N
F# - J
G - M
G# - K
A - , (Comma)
A# - L
B - . (Period)
High C - / (Forward Slash)
Paddle:
Paddle Adjust -5 - O
Paddle Adjust +5 - P
In addition, the following emulator functions are mapped to your keyboard by
default:
Execute/Pause - Forward Delete
Reset - Page Down
Rotate Display Left - [ (Left Bracket)
Rotate Display Right - ] (Right Bracket)
Set Speed to Half - - (Dash)
Set Speed to Double - = (Equal)
Using the NDS Touch Pad:
Touch pad input is emulated using the left mouse button by default. Simply
click in the touch pad area of the NDS display window to use the NDS touch pad.
Using the NDS Microphone:
Some games make use of the NDS microphone. DeSmuME emulates the NDS microphone
by using the default input device selected in your System Preferences. You can
choose Emulation > Show Microphone Settings to view the input device that
DeSmuME is currently using, as well as setting its gain.
DeSmuME will track the input level on the meter as the NDS reads the
microphone. The meter reflects the input level as seen by the NDS. Note that
some games ignore the microphone, and therefore will not register on the meter.
If you need to view the input level from the host machine's perspective, you
can view the host's input level in your System Preferences.
Finally, you can generate audio samples in software by using one of DeSmuME's
audio generators, and send those audio samples to the NDS. This is what the
Microphone command in your Input Preferences does. As long as the Microphone
command is engaged, the host input device will be ignored. When you disengage
the Microphone command, DeSmuME will automatically return to reading the host
input device.
The microphone icon serves to indicate the current status of the NDS
microphone, and will change color for each status:
Black - The microphone is inactive.
Dark Green - The microphone is active. However, the input level is too
low to be meaningful, or the game is ignoring the microphone.
Bright Green - The microphone is active and the game is reading a
meaningful input level.
Bright Red - The microphone is active and the game is reading a clipped
input level. Depending on the situation, this may or may not
be desirable. Use the gain slider to influence the input
level if needed.
Gray - The host input device is being temporarily ignored because a
Microphone command is currently engaged.
Rotating the NDS Display:
Some games require that the NDS display be at a certain rotation in order to
look correct. Rotation options can be found by choosing
View > Display Rotation. You can also use the toolbar buttons Rotate Left and
Rotate Right to rotate the display by 90 degrees counterclockwise or clockwise,
respectively. Finally, you can assign inputs to Rotate Left and Rotate Right in
your Input Preferences.
Freezing and Restoring the Emulation State:
Save states are a powerful feature that allows you to freeze the emulation
state and restore it later. However, note that save states are only a
temporary means of saving -- more permanent saves must be done using the
in-game save (or ROM save).
- To freeze the emulation state, choose File > Save State File.
- To restore the emulation state, choose File > Open State File.
You can also freeze/restore emulation states without having to manage the
Open/Save dialogs. There are ten available save state "slots" that you can
use to quickly freeze/restore the emulation state.
- To quick freeze the emulation state, choose File > Save State Slot > Slot #.
The default hotkey for this is (Shift-#).
- To quick restore the emulation state, choose File > Load State Slot > Slot #.
The default hotkey for this is (#).
Improving Emulation Performance:
There are many settings you can change in order to improve DeSmuME's emulation
performance. All of the settings listed below affect performance the most. Use
the settings as shown for the best possible performance. All of these settings
may be found in DeSmuME > Preferences.
- WARNING: Changing any Emulation setting may cause emulation glitches in
certain ROMs. Do not change these settings unless you are willing to
accept reduced ROM compatibility.
Display:
Video Output:
Use Vertical Sync - Off
Video Filter - None
3D Rendering:
3D Rendering Engine - SoftRasterizer
Rendering Threads - Automatic
Emulation:
Advanced Bus Level Timing - Off (May cause glitches)
Rigourous 3D Rendering Timing - On (May cause graphical glitches)
3D Rendering Engine - Dynamic Recompiler (May reduce ROM compatibility)
Dynamic Recompiler Block Size - 100 (May cause glitches)
Use External BIOS Images - Off (May reduce ROM compatibility)
3) Additional Documentation ___________________________________________________
The quick start guide in this Read Me is by no means a complete reference to
everything that DeSmuME can do! If you need any additional information about
DeSmuME, then you can reference our online Wiki pages for up-to-date
information.
* Official Documentation: http://wiki.desmume.org/index.php?title=Main_Page
This is the main Wiki page that contains all of our official documentation.
* FAQ: http://wiki.desmume.org/index.php?title=Faq
The Frequently Asked Questions (FAQ) page has a lot of useful general
information about DeSmuME. Do note that some of the information may be platform
specific, and may not directly apply to the OS X version of DeSmuME.
* DeSmuME Manual for OS X:
http://wiki.desmume.org/index.php?title=DeSmuME_Manual_for_the_Macintosh_port
This page contains complete and detailed information about how to operate
DeSmuME for OS X.
* DeSmuME Build Instructions for OS X:
http://wiki.desmume.org/index.php?title=Installing_DeSmuME_from_source_on_OS_X
This page contains complete and detailed instructions about how to make your
own build of DeSmuME for OS X directly from the source code.
4) Contact Information ________________________________________________________
Thank you for you interest in DeSmuME! If you want to tell us how useful
DeSmuME is in your life, your love (or hate) of certain NDS games, your passion
for NDS homebrew development, or anything else related to DeSmuME or NDS
emulation, then there are various ways for you to contact us!
However, keep in mind that there are a few of rules that you need to follow:
- Do not ask us to provide ROMs, BIOS files, or any other copyrighted stuff.
We don't want to have to deal with any legal issues that could get us in
trouble, or worse, completely shut down.
- When contacting us, please use the appropriate means to do it. For example,
if you simply want to tell us how much you love or hate us, then use the
comments on the official webpage. Another example: If you want to post on the
forum, be sure to keep the topic focused on DeSmuME; questions that ask for
things like us providing you the latest Pokemon cheats are not DeSmuME
related, and we will instead refer you to a Pokemon cheaters forum. Finally,
our developer chat channel is intended for furthering the development work of
DeSmuME; questions about how to use DeSmuME should not come here, but instead
go to the Support forum. In short, use the appropriate contact method. That's
why the different methods exist!
* Official Website: http://desmume.org
Our official website has the latest news on DeSmuME releases, and also has a
lot of other useful information about DeSmuME. You can comment on different
posts telling us how you feel about DeSmuME. Is DeSmuME the best thing in your
life? Is it making you cry? Or is it a bunch of blah? Let us know here!
* Public Forum: http://forums.desmume.org
If you have a question about DeSmuME, then this is the place to ask it. But
before you ask it, be aware that your question may have already been answered
before, so try the following things first:
- Read the manual and the FAQ. A lot of questions people have are usually
already answered in our documentation.
- Do a forum search about your question.
If you still need to ask a question, choose Help > Submit a Support Request in
the DeSmuME application. Follow the onscreen instructions on the Support
Request Form.
* Live Developer Chat Channel: irc://irc.freenode.net/desmume
We have a live developer chatline on Freenode IRC at #desmume. This channel
is meant for discussing the development of DeSmuME, and shows the real work
that goes on behind the scenes. If you are interested in doing any sort of
software programming, software testing, documentation, or graphics work, then
please join our chat channel! We would love for you to join us!
* Bug Reports:
If you believe that you have found a bug, you may submit a bug report by
choosing Help > Submit a Bug Report in the DeSmuME application. Follow the
onscreen instructions on the Bug Report Form.
When you click Go To Bug Report Webpage, you will be taken to our bug tracker
on SourceForge. Do note that you will need a SourceForge account in order to
submit a bug report.
Bug submissions are very welcome and encouraged. However, when you submit a bug
to us, you MUST provide the following information, or else your bug submission
may be rejected:
- DeSmuME app version
- Your operating system and OS version
- Your Mac model identifier
- The name of the running ROM when the bug was observed (or "None", if no ROM
was running)
- The serial code of the running ROM when the bug was observed (or "None", if
no ROM was running)
- A description of the exact behavior you observed
- A description of the behavior you expected
All of this information will be prepared for you if you use the Bug Report Form
from Help > Submit a Bug Report.
When you write your description, make sure that they are as detailed as
possible. The better your descriptions are, the faster we can test and fix
bugs. For example, if you observed a bug in the game Golden Sun: Dark Dawn, then
the bug report could look something like this:
App Version: v0.9.11
Operating System: OS X v10.10.2 (14C1510)
Mac Model Identifier: iMac11,2
ROM Name: GOLDENSUN_DD
ROM Serial: NTR-BO5E-USA
Observed Behavior: I tried to load a save state using the
File > Load State > Slot 3 menu option, but the game froze. If I reset, I
can get the game working again.
Expected Behavior: The game should continue running from the point where I
made the save state.
We will try to get your bug tested as soon as possible, but any fixes may take
longer, depending on the complexity of the bug. Also, some bugs may require us
to ask you for certain files, such as your ROM saves, save states, or console
logs. For the above example, we would probably ask you for your save states to
help us track down the bug.
5) License ____________________________________________________________________
This file is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 2 of the License, or (at your option) any later
version.
This file is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this software. If not, see <http://www.gnu.org/licenses/>.
* See the GNU General Public License details in COPYING.
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