usbjoy fix

[fceu.git] / out_gp2x / readme.txt

=================================================================================\r
                     GPFCE - NES emulator for the GP2X\r
=================================================================================\r
\r
\r
This is a gp2x port of the **great** Open Source NES emulator FCE Ultra:\r
http://fceultra.sourceforge.net.   If you enjoyed using this emulator, please\r
keep in mind that this would not have been possible without the hard work and\r
dedication of the FCE Ultra developers.\r
\r
In case you don't know what the NES is about, see:\r
http://en.wikipedia.org/wiki/Famicom.\r
\r
\r
------------------------------------------------------------------\r
 Usage\r
------------------------------------------------------------------\r
\r
1)  Unzip the emulator onto some directory on your SD card.\r
2)  Since version 0.4 ROMs no longer have to be put to fixed location,\r
    so you can put them anywhere. Rom files can be zipped.\r
3)  The emulator will create a subdirectory in it's working directory \r
    called fceultra. Save states etc. go here.\r
    If you want to load saves from < 0.4 version, you should copy files\r
    from /mnt/sd/roms/nes/fceultra/fcs to\r
    <where_you_put_gpfce>/fceultra/fcs directory.\r
4)  Hit both volume keys to enter the menu.\r
5)  For FDS support, put disksys.rom in <where_you_put_gpfce>/fceultra\r
6)  For GameGenie support, put gg.rom in <where_you_put_gpfce>/fceultra\r
\r
\r
------------------------------------------------------------------\r
 Controls\r
------------------------------------------------------------------\r
\r
Since v0.4 controls are configurable. Default controls are:\r
\r
B         - NES A\r
X         - NES B\r
Y         - NES A (turbo)\r
A         - NES B (turbo)\r
SELECT    - NES SELECT\r
START     - NES START\r
VOL +/-   - Vol control. Pressing both enters the menu. \r
\r
L & JOY   - Save state\r
R & JOY   - Load State\r
\r
Note: JOY means press in on the joystick (i.e. not up/down/left/right)\r
\r
\r
gpfce can't emulate all input devices which FCE Ultra does, but it can handle\r
gamepad emulation of course, plus it can emulate Zapper and the Arkanoid\r
controller (the last two have hardcoded controls).\r
\r
B is the emulated trigger button for the Zapper. X is also emulated as the\r
trigger, but as long as you have it pressed down, no color detection will take\r
place, which is effectively like pulling the trigger while the Zapper is\r
pointed away from the television screen. Note that you must press X for a\r
short time to have the desired effect.\r
\r
For Zapper and the Arkanoid controller Y increases the movement speed,\r
A decreases.\r
\r
\r
------------------------------------------------------------------\r
 Palettes\r
------------------------------------------------------------------\r
\r
gpfce has similar palette options as FCE Ultra, so here is modified excerpt\r
from FCE Ultra manual:\r
\r
FCE Ultra has many palette features, including loading a custom palette to\r
replace the default NES palette (see FCE Ultra option in options menu).\r
The palette from an NTSC NES can also be generated on-the-fly.\r
\r
First, a note on on the format of external palettes; Palette files are expected\r
to contain 64 8-bit RGB triplets(each in that order; red comes first in the\r
triplet in the file, then green, then blue). Each 8-bit value represents\r
brightness for that particular color. 0 is minimum, 255 is maximum.\r
\r
Palettes can be set on a per-game basis. To do this, put a palette file in the\r
<where_you_put_gpfce>/fceultra/pal directory with the same base filename as the\r
game you wish to associate with and add the extension "pal". Examples:\r
\r
                File name:              Palette file name:\r
                 BigBad.nes              BigBad.pal\r
                 BigBad.zip              BigBad.pal\r
                 BigBad.Better.nes       BigBad.Better.pal\r
	\r
\r
With so many ways to choose a palette, figuring out which one will be active may\r
be difficult. Here's a list of what palettes will be used, in order from highest\r
priority to least priority(if a condition doesn't exist for a higher priority\r
palette, the emulator will continue down its list of palettes).\r
\r
    * Palette loaded from the "fceultra/pal" directory.\r
    * NTSC Color Emulation(only for NTSC NES games).\r
    * VS Unisystem palette(if the game is a VS Unisystem game and a palette is available).\r
    * Custom global palette (set in the menu).\r
    * Default NES palette.\r
\r
\r
------------------------------------------------------------------\r
 Famicom Disk System\r
------------------------------------------------------------------\r
\r
You will need the FDS BIOS ROM image in <where_you_put_gpfce>/fceultra directory.\r
It's size should be 8192 bytes and it must be named "disksys.rom".\r
gpfce will not load FDS games without this file.\r
\r
You will also probably need configure keys for swapping the virtual FDS disks,\r
they are configurable in Controls menu.\r
\r
Two types of FDS disk images are supported: disk images with the FWNES-style header,\r
and disk images with no header. The number of sides on headerless disk images is\r
calculated by the total file size, so don't put extraneous data at the end of the file.\r
\r
\r
------------------------------------------------------------------\r
 VS Unisystem\r
------------------------------------------------------------------\r
\r
gpfce currently only supports VS Unisystem ROM images in the iNES format. See\r
FCE Ultra manual for the list of supported games.\r
\r
You will need to configure a key to insert coins, see Controls option in the menu.\r
\r
\r
------------------------------------------------------------------\r
 Cheats\r
------------------------------------------------------------------\r
\r
For cheating you can ether use the authentic game genie support, or the .cht files.\r
\r
To use authentic game genie, place appropriate gg.rom into\r
<where_you_put_gpfce>/fceultra.\r
Use the FCE Ultra option menu or -gg on commandline to activate the game genie rom.\r
The ROM image may either be the 24592 byte iNES-format image, or the 4352\r
byte raw ROM image.\r
\r
The .cht files fould be placed into <where_you_put_gpfce>/fceultra/cheats/ directory.\r
They should have the same base filename as the game you wish to associate with\r
with the extension "cht". Examples:\r
\r
                File name:              Palette file name:\r
                 BigBad.nes              BigBad.cht\r
                 BigBad.zip              BigBad.cht\r
                 BigBad.Better.nes       BigBad.Better.cht\r
\r
If you have done everything correctly, Cheat option will appear in the main menu\r
after you load the ROM. You can activate/deactivate cheats by pressing B.\r
For description of .cht file format, see http://fceultra.sourceforge.net/cheat.php\r
\r
\r
------------------------------------------------------------------\r
 FCM movies\r
------------------------------------------------------------------\r
\r
Version 0.4 has partial FCM movie support. Most of the movies desync due to\r
different timing, but some of them can be played. There is only playback support.\r
Files should be placed in the ROMs directory along with the ROMs themselves.\r
Naming is a bit different, the fcm files should have full ROM name in them,\r
with additional .fcm extension added. Examples:\r
\r
                File name:              Palette file name:\r
                 BigBad.nes              BigBad.nes.fcm\r
                 BigBad.zip              BigBad.zip.fcm\r
                 BigBad.Better.nes       BigBad.Better.nes.fcm\r
\r
\r
--------------------------------------------------------------------\r
 Version History\r
--------------------------------------------------------------------\r
\r
\r
ver 0.4 (by notaz)\r
  rev 15x\r
          - Fixed savestate subsections (were causing some mapper data not\r
            to be saved).\r
          - Fixed an issue of MapIRQHook getting lost after loading a savestate\r
            (glitched Akumajou Densetsu and other games after savestate load).\r
          - A bug, which prevented configuring multiple USB pads fixed.\r
  rev 153\r
          - Lots of work on the asm core. Timing fixed for some instructions.\r
            Some missing undocumented instruction handlers added. Lots of\r
            tweaking to make it compatible with all that mapper code.\r
          - Completely new PicoDrive style menu added with most standard\r
            FCE Ultra and some additional options. Selector removed, ROM list\r
            is now built-in and only limited by available memory.\r
          - Merged in most of code from 0.98.1x versions. Only ppu/rendering\r
            and sound emulation code left from 0.81 (which is less accurate\r
            but much faster).\r
          - Default palette changed to one from later versions.\r
          - Fixed some alignment problems in MMC5 and some other mappers.\r
          - Some generic optimizations and code cleanup/refactoring.\r
          - The built-in NSF player fixed.\r
          - Authentic GameGenie support fixed.\r
          - FDS support fixed.\r
          - VS Unisystem support fixed.\r
          - Ingame saves fixed (not sure when they got broken).\r
          - Increased maximum sound volume.\r
          - Added Zapper emulation just for fun.\r
          - Added partial FCM movie support.\r
          - Fixed some memory leaks.\r
          - Fixed a bug which caused USB connection from GP2X menu\r
            to hang after using gpfce.\r
          - Software scaler added.\r
          - USB gamepad support added.\r
          - TV out fixed.\r
          - Documentation updated.\r
\r
\r
ver 0.3 (by notaz)\r
\r
          - Major improvement: added ARM asm CPU core from LJGP32,\r
            which itself was adapted from FCA by Yoyofr.\r
            The core required substantial changes to make it work in\r
            FCE ultra.\r
          - The emulator renders directly to frame buffer now (previously\r
            it was drawing to offscreen buffer, which was then copied to\r
            framebuffer).\r
          - Squidge's MMU hack added.\r
          - Added sync() calls after savestate writes.\r
          - Some additional tweaking here and there to get a few more FPS.\r
          - Volume middle now can be used as shift to emulator functions\r
            instead stick click (saving, stretching, etc.).\r
          - Added frameskip selection with shift+A and shift+Y (shift is\r
            stick click or volume middle).\r
          - Probably some more changes I forgot about.\r
\r
\r
\r
ver 0.2   5/29/2006  MD5SUM: dd75fa3f090f9298f9f4afff01ab96f2 *gpfce\r
\r
          - Sound output issue with stereo fixed, now using\r
            22050 khz 16-bit mono.  I've tried interpolating to \r
            44khz mono, but the results seemed similar.\r
          - selector supports up to 2048 files, sorted, with\r
            alpha scrolling via left/right in addition to \r
            page up/down via L/R.\r
          - additional startup scripts to select button and fps  \r
            configurations\r
          - can load FDS files, but does not seem to work yet\r
          - configurable buttons  (use swapbuttons version )\r
          - configurable fps (use showfps version)\r
          - Configurable turbo fire control\r
          - Selectable save slots from 0-9\r
          - Volume bar\r
          - compiled with GCC 4.1.0 -O3 with profiling\r
\r
\r
ver 0.1   5/23/2006  MD5SUM: 13681f25713ad04c535c23f8c61f1e0b *gpfce\r
\r
          - Initial version\r
          - Around 60 fps with sound\r
          - Load/Save State\r
          - Hardware Stretch\r
          - Soft reset support\r
          - No GUI, using selector with config\r
          - Hard coded 22050 audio, 16-bit, stereo\r
          - compiled with GCC 4.1.0 -O3 with profiling\r
          - Hard coded config path.  This is to prevent users\r
            from filling up the gp2x space by accident\r
\r
\r
      \r
------------------------------------------------------------------\r
 Credits/thanks\r
------------------------------------------------------------------\r
\r
- Original base code of FCE Ultra by Xodnizel, Bero.\r
- Porting/optimization/integration/frontend for 0.3 and 0.4 by notaz.\r
- Versions 0.1 and 0.2 by zzhu8192 (http://www.unicorn-jockey.com).\r
- asm CPU core from FCA and Little John GP32.\r
- Minimal library by rlyeh.\r
- Additional low-level GP2X libs by Hermes/PS2Reality, theoddbot,\r
  god_at_hell, Puck2099.\r
\r
additional thanks:\r
- Cruel and DaveC from gp32x boards for beta testing.\r
- All FCE Ultra contributors listed in\r
  http://fceultra.sourceforge.net/docs.php\r
\r
...and everyone whose name my mind has misplaced.\r
\r
zzhu8192's thanks:\r
- To lots of talented developers on the http://www.gp32x.com/board/\r
  Reesy, Squidge, etc.  for responding to my technical questions.\r
- Thanks to \r
- Lil-kun - for the neat GPFCE logo and the Web Site (under construction) :D\r
- Referenced source code from MameGP2X (Franxis) and FCEU-0.3 gp2x (Noname)\r
- Awesome wiki: http://wiki.gp2x.org/wiki/Main_Page\r
- Awesome gp2x site: http://www.gp32x.com/\r
- ryleh's minimal lib - w/o which this wouldn't have worked\r
- FCE Ultra developers (http://fceultra.sourceforge.net/) \r
  for the wonderful and feature rich NES emulator.\r
- kounch for Selector frontend - works great for lazy developers like me.  :-D\r
  I have sent my changes to kounch, so hopefully the changes will make it into\r
  version 1.2 or later.\r
- gp2x community - just plain rocks\r
\r
\r