7 This is yet another Megadrive / Genesis / Sega CD / Mega CD / 32X / SMS
\r
8 emulator, which was written having ARM-based handheld devices in mind
\r
9 (such as smartphones and handheld consoles like GP2X and Pandora).
\r
11 The emulator is heavily optimized for ARM, features assembly cores for
\r
12 68k, Z80 and VDP chip emulation, also has dynamic recompilers for SH2 and
\r
13 SSP16 (for 32X and SVP emulation). It was started by Dave (aka fdave,
\r
14 finalburn author) as basic Genesis/Megadrive emulator for Pocket PC,
\r
15 then taken over and expanded by notaz.
\r
17 PicoDrive is the first emulator ever to properly emulate Virtua Racing and
\r
25 Extract all files to some directory on your SD and run PicoDrive.gpe from your
\r
26 GP2X/Wiz/Caanoo menu. The same .gpe supports GP2X F100/F200, Wiz and Caanoo,
\r
27 there is no need to use separate versions.
\r
28 Then load a ROM and enjoy! ROMs can be in .smd or .bin format and can be zipped.
\r
29 Sega/Mega CD images can be in ISO/CSO+MP3/WAV or CUE+BIN formats (read below
\r
33 First make sure you have homebrew-enabled Service Pack installed. Then copy
\r
34 PicoDrive.exe and KGSDK.dll to any place in your filesystem (both files must
\r
35 be in the same directory) and run PicoDrive.exe using the launcher of your choice
\r
36 (some of them might require renaming PicoDrive.exe to Autorun.exe, placing it in
\r
37 the root of SD, etc). Then load a ROM and enjoy! ROMs can be placed anywhere, can
\r
38 be in .smd or .bin format and can be zipped (one ROM per zip).
\r
41 If you are running a custom firmware, just copy the whole PicoDrive directory to
\r
42 /PSP/GAME or /PSP/GAMEXXX directory in your memory stick (it shouldn't matter
\r
43 which one GAME* directory to use).
\r
45 If you are on 1.5, there is a separate KXploited version for it.
\r
48 Just copy the .pnd to <sd card>/pandora/menu or <sd card>/pandora/desktop.
\r
51 This emulator has lots of options with various tweaks (for improved speed mostly),
\r
52 but it should have best compatibility in it's default config. If suddenly you
\r
53 start getting glitches or change something and forget what, use "Restore defaults"
\r
57 How to run Sega/Mega CD games
\r
58 -----------------------------
\r
60 To play any CD game, you need BIOS files. These files must be copied to
\r
62 <sd card>/pandora/appdata/picodrive/ directory
\r
63 (if you run PicoDrive once it will create that directory for you).
\r
65 the same directory as PicoDrive files.
\r
67 Files can be named as follows:
\r
69 US: us_scd1_9210.bin us_scd2_9306.bin SegaCDBIOS9303.bin
\r
70 EU: eu_mcd1_9210.bin eu_mcd2_9303.bin eu_mcd2_9306.bin
\r
71 JP: jp_mcd1_9112.bin jp_mcd1_9111.bin
\r
72 these files can also be zipped.
\r
74 The game must be dumped to CUE+BIN or CUE+ISO format.
\r
75 ISO/CSO+MP3/WAV is also supported, but may cause problems.
\r
76 When using CUE/BIN, you must load .cue file from the menu, or else
\r
77 the emu will not find audio tracks.
\r
80 Other important stuff
\r
81 ---------------------
\r
83 * Sega/Mega CD: If the background music is missing, the CD image format may be
\r
84 wrong. Currently .cue/bin is recommended. Be aware that there are lots of bad
\r
85 dumps on the web, and some use mp3 format for audio, which often causes
\r
86 problems (see below).
\r
87 * While iso/mp3 format is supported, it's not recommended to use.
\r
88 Some of many problems with mp3 are listed below:
\r
89 * MP3s may be named incorrectly and will not play.
\r
90 * The game music may play too fast/too slow/out of sync, which means they
\r
91 are encoded incorrectly. PicoDrive is not a mp3 player, so all mp3s MUST
\r
92 be encoded at 44.1kHz stereo.
\r
93 * Sega/Mega CD: If your games hang at the BIOS screen (with planets shown),
\r
94 you may be using a bad BIOS dump. Try another from a different source,
\r
95 like dumping it from your own console.
\r
97 * What using mp3s, use lower bitrate for better performance (96 or 128kbps
\r
99 * GP2X F100/F200: When you use both GP2X CPUs, keep in mind that you can't
\r
100 overclock as high as when using ARM920 only. For example my GP2X when run
\r
101 singlecore can reach 280MHz, but with both cores it's about 250MHz. When
\r
102 overclocked too much, it may start hanging and producing random noise, or
\r
103 causing ARM940 crashes ("940 crashed" message displayed).
\r
104 * GP2X F100/F200: Due to internal implementation mp3s must not be larger that
\r
105 12MB (12582912 bytes). Larger mp3s will not be fully loaded.
\r
113 This is a slot number to use for savestates, when done by a button press outside
\r
114 menu. This can also be configured to be changed with a button
\r
115 (see "key configuration").
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118 How many frames to skip rendering before displaying another.
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119 "Auto" is recommended.
\r
122 This option lets you force the game to think it is running on machine from the
\r
123 specified region, or just to set autodetection order. Also affects Sega/Mega CD.
\r
126 Self-explanatory. Format is XX/YY, where XX is the number of rendered frames and
\r
127 YY is the number of emulated frames per second.
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129 @@0. "Enable sound"
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130 Does what it says. You must enable at least YM2612 or SN76496 (in advanced options,
\r
131 see below) for this to make sense (already done by default).
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133 @@0. "Sound Quality"
\r
135 Sound sample rate, affects sound quality and emulation performance.
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136 22050Hz setting is the recommended one.
\r
138 Sound sample rate and stereo mode. Mono is not available in Sega/Mega CD mode.
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141 @@0. "Confirm savestate"
\r
142 Allows to enable confirmation on savestate saving (to prevent savestate overwrites),
\r
143 on loading (to prevent destroying current game progress), and on both or none, when
\r
144 using shortcut buttons (not menu) for saving/loading.
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146 @@0. "[Display options]"
\r
147 Enters Display options menu (see below).
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149 @@0. "[Sega/Mega CD options]"
\r
150 Enters Sega/Mega CD options menu (see below).
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152 @@0. "[32X options]"
\r
153 Enters 32X options menu (see below).
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155 @@0. "[Advanced options]"
\r
156 Enters advanced options menu (see below).
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158 @@0. "Save cfg as default"
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159 If you save your config here it will be loaded on next ROM load, but only if there
\r
160 is no game specific config saved (which will be loaded in that case).
\r
161 You can press left/right to switch to a different config profile.
\r
163 @@0. "Save cfg for current game only"
\r
164 Whenever you load current ROM again these settings will be loaded.
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166 @@0. "Restore defaults"
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167 Restores all options (except controls) to defaults.
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177 This enables alternative heavily optimized tile-based renderer, which renders
\r
178 pixels not line-by-line (this is what accurate renderers do), but in 8x8 tiles,
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179 which is much faster. But because of the way it works it can't render any
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180 mid-frame image changes (raster effects), so it is useful only with some games.
\r
182 Other two are accurate line-based renderers. The 8bit is faster but does not
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183 run well with some games like Street Racer.
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187 This option allows to switch between 16bit and 8bit renderers. The 8bit one is
\r
188 a bit faster for some games, but not much, because colors still need to be
\r
189 converted to 16bit, as this is what Gizmondo requires. It also introduces
\r
190 graphics problems for some games, so it's best to use 16bit one.
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194 This option allows to switch between fast and accurate renderers. The fast one
\r
195 is much faster, because it draws the whole frame at a time, instead of doing it
\r
196 line by line, like the accurate one does. But because of the way it works it
\r
197 can't render any mid-frame image changes (raster effects), so it is useful only
\r
204 Wiz only: works around the tearing problem by using portrait mode. Causes ~5-10%
\r
205 performance hit, but eliminates the tearing effect.
\r
207 @@1. "Gamma correction"
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208 F100/F200 only: Alters image gamma through GP2X hardware. Larger values make
\r
209 image to look brighter, lower - darker (default is 1.0).
\r
212 This one adjusts the LCD refresh rate to better match game's refresh rate and
\r
213 starts synchronizing rendering with it. Should make scrolling smoother and
\r
214 eliminate tearing on F100/F200.
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217 @@1. "Scanline mode"
\r
218 This option was designed to work around slow framebuffer access (the Gizmondo's
\r
219 main bottleneck) by drawing every other line (even numbered lines only).
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220 This improves performance greatly, but looses detail.
\r
222 @@1. "Scale low res mode"
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223 The Genesis/Megadrive had several graphics modes, some of which were only 256
\r
224 pixels wide. This option scales their width to 320 by using simple
\r
225 pixel averaging scaling. Works only when 16bit renderer is enabled.
\r
227 @@1. "Double buffering"
\r
228 Draws the display to offscreen buffer, and flips it with visible one when done.
\r
229 Unfortunately this causes serious tearing, unless v-sync is used (next option).
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231 @@1. "Wait for V-sync"
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232 Waits for vertical sync before drawing (or flipping buffers, if previous option
\r
233 is enabled). Emulation is stopped while waiting, so this causes large performance
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237 @@1. "Scale factor"
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238 This allows to resize the displayed image by using the PSP's hardware. The number is
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239 used to multiply width and height of the game image to get the size of image to be
\r
240 displayed. If you just want to make it fullscreen, just use "Set to fullscreen"
\r
243 @@1. "Hor. scale (for low res. games)"
\r
244 This one works similarly as the previous setting, but can be used to apply additional
\r
245 scaling horizontally, and is used for games which use lower (256 pixel wide) Gen/MD
\r
248 @@1. "Hor. scale (for hi res. games)"
\r
249 Same as above, only for higher (320 pixel wide) resolution using games.
\r
251 @@1. "Bilinear filtering"
\r
252 If this is enabled, PSP hardware will apply bilinear filtering on the resulting image,
\r
253 making it smoother, but blurry.
\r
255 @@1. "Gamma adjustment"
\r
256 Color gamma can be adjusted with this.
\r
259 This can be used to reduce unwanted "ghosting" effect for dark games, by making
\r
260 black pixels brighter. Use in conjunction with "gamma adjustment" for more effect.
\r
262 @@1. "Wait for v-sync"
\r
263 Wait for the screen to finish updating before switching to next frame, to avoid tearing.
\r
264 There are 3 options:
\r
265 * never: don't wait for vsync.
\r
266 * sometimes: wait only if emulator is running fast enough.
\r
267 * always: always wait (causes emulation slowdown).
\r
269 @@1. "Set to unscaled centered"
\r
270 Adjust the resizing options to set game image to it's original size.
\r
272 @@1. "Set to 4:3 scaled"
\r
273 Scale the image up, but keep 4:3 aspect, by adding black borders.
\r
275 @@1. "Set to fullscreen"
\r
276 Adjust the resizing options to make the game image fullscreen.
\r
279 Allows to set up scaling, filtering and vertical sync.
\r
283 Sega/Mega CD options
\r
284 --------------------
\r
287 The Sega/Mega CD unit had two blinking LEDs (red and green) on it. This option
\r
288 will display them on top-left corner of the screen.
\r
291 This option enables CD audio playback.
\r
294 This enables 8 channel PCM sound source. It is required for some games to run,
\r
295 because they monitor state of this audio chip.
\r
297 @@2. "ReadAhead buffer"
\r
298 This option can prefetch more data from the CD image than requested by game
\r
299 (to avoid accessing card later), what can improve performance in some cases.
\r
301 "OFF" is the recommended setting.
\r
304 @@2. "Save RAM cart"
\r
305 Here you can enable 64K RAM cart. Format it in BIOS if you do.
\r
307 @@2. "Scale/Rot. fx"
\r
308 The Sega/Mega CD had scaling/rotation chip, which allows effects similar to
\r
309 "Mode 7" effects in SNES. On slow systems like GP2X, disabling may improve
\r
310 performance but cause graphical glitches.
\r
317 Enables emulation of addon. Option only takes effect when ROM is reloaded.
\r
320 @@3. "32X renderer"
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321 This currently only affects how the Genesis/MD layers are rendered, which is
\r
322 same as "Renderer" in display options.
\r
326 Emulates PWM sound portion of 32X hardware. Disabling this may greatly improve
\r
327 performance for games that dedicate one of SD2s for sound, but will cause
\r
328 missing sound effects and instruments.
\r
330 @@3. "Master SH2 cycles" / "Slave SH2 cycles"
\r
331 This allows underclocking the 32X CPUs for better emulation performance. The
\r
332 number has the same meaning as cycles in DOSBox, which is cycles per millisecond.
\r
333 Underclocking too much may cause various in-game glitches.
\r
336 Advanced configuration
\r
337 ----------------------
\r
339 @@4. "Use SRAM/BRAM savestates"
\r
340 This will automatically read/write SRAM (or BRAM for Sega/Mega CD) savestates for
\r
341 games which are using them. SRAM is saved whenever you enter the menu or exit the
\r
344 @@4. "Disable sprite limit"
\r
345 The MegaDrive/Genesis had a limit on how many sprites (usually smaller moving
\r
346 objects) can be displayed on single line. This option allows to disable that
\r
347 limit. Note that some games used this to hide unwanted things, so it is not
\r
348 always good to enable this option.
\r
351 Enables emulation of Z80 chip, which was mostly used to drive the other sound chips.
\r
352 Some games do complex sync with it, so you must enable it even if you don't use
\r
353 sound to be able to play them.
\r
355 @@4. "Emulate YM2612 (FM)"
\r
356 This enables emulation of six-channel FM sound synthesizer chip, which was used to
\r
357 produce sound effects and music.
\r
359 @@4. "Emulate SN76496 (PSG)"
\r
360 This enables emulation of PSG (programmable sound generation) sound chip for
\r
361 additional effects.
\r
363 Note: if you change sound settings AFTER loading a ROM, you may need to reset
\r
364 game to get sound. This is because most games initialize sound chips on
\r
365 startup, and this data is lost when sound chips are being enabled/disabled.
\r
367 @@4. "gzip savestates"
\r
368 This will always apply gzip compression on your savestates, allowing you to
\r
369 save some space and load/save time.
\r
371 @@4. "Don't save last used ROM"
\r
372 This will disable writing last used ROM to config on exit (what might cause SD
\r
373 card corruption according to DaveC).
\r
375 @@4. "Disable idle loop patching"
\r
376 Idle loop patching is used to improve performance, but may cause compatibility
\r
377 problems in some rare cases. Try disabling this if your game has problems.
\r
379 @@4. "Disable frame limiter"
\r
380 This allows games to run faster then 50/60fps, useful for benchmarking.
\r
383 @@4. "Use ARM940 core for sound"
\r
384 F100/F200: This option causes PicoDrive to use ARM940T core (GP2X's second CPU)
\r
385 for sound (i.e. to generate YM2612 samples) to improve performance noticeably.
\r
386 It also decodes MP3s in Sega/Mega CD mode.
\r
390 This enables dynamic recompilation for SVP chip emulated for Virtua Racing game,
\r
391 what improves it's emulation performance greatly.
\r
397 Select "Configure controls" from the main menu. Then select "Player 1" and you will
\r
398 see two columns. The left column lists names of Genesis/MD controller buttons, and
\r
399 the right column your handheld ones, which are assigned.
\r
401 There is also option to enable 6 button pad (will allow you to configure XYZ
\r
402 buttons), and an option to set turbo rate (in Hz) for turbo buttons.
\r
408 To use GG/patch codes, you must type them into your favorite text editor, one
\r
409 per line. Comments may follow code after a whitespace. Only GameGenie and
\r
410 Genecyst patch formats are supported.
\r
413 Genecyst patch (this example is for Sonic):
\r
415 00334A:0005 Start with five lives
\r
416 012D24:0001 Keep invincibility until end of stage
\r
417 009C76:5478 each ring worth 2
\r
418 009C76:5678 each ring worth 3
\r
421 Game Genie patch (for Sonic 2):
\r
423 ACLA-ATD4 Hidden palace instead of death egg in level select
\r
426 Both GG and patch codes can be mixed in one file.
\r
428 When the file is ready, name it just like your ROM file, but with additional
\r
429 .pat extension, making sure that case matches.
\r
434 PATCH FILE: Sonic.zip.pat
\r
437 PATCH FILE: Sonic 2.bin.pat
\r
439 Put the file into your ROMs directory. Then load the .pat file as you would
\r
440 a ROM. Then Cheat Menu Option should appear in main menu.
\r
448 main 68k @ 7.6MHz: yes, FAME/C core
\r
449 z80 @ 3.6MHz: yes, CZ80 core
\r
451 main 68k @ 7.6MHz: yes, Cyclone core
\r
452 z80 @ 3.6MHz: yes, DrZ80 core
\r
454 VDP: yes, except some quirks and modes not used by games
\r
455 YM2612 FM: yes, optimized MAME core
\r
456 SN76489 PSG: yes, MAME core
\r
457 SVP chip: yes! This is first emu to ever do this.
\r
458 Some in-cart mappers are also supported.
\r
462 another 68k @ 12.5MHz: yes, FAME/C too
\r
464 another 68k @ 12.5MHz: yes, Cyclone too
\r
466 gfx scaling/rotation chip (custom ASIC): yes
\r
467 PCM sound source: yes
\r
468 CD-ROM controller: yes (mostly)
\r
469 bram (internal backup RAM): yes
\r
472 2x SH2 @ 23MHz: yes, custom recompiler
\r
477 Problems / limitations
\r
478 ----------------------
\r
481 * SVP emulation is terribly slow.
\r
483 * Various VDP modes and quirks (window bug, scroll size 2, etc.) are not
\r
484 emulated, as very few games use this (if any at all).
\r
485 * The emulator is not 100% accurate, so some things may not work as expected.
\r
486 * The FM sound core doesn't support all features and has some accuracy issues.
\r
492 This emulator is made of the code from following people/projects:
\r
495 GP2X, UIQ, PSP, Gizmondo ports, CPU core hacks, dynamic recompilers,
\r
496 lots of additional coding (see changelog).
\r
497 Homepage: http://notaz.gp2x.de/
\r
500 one who started it all:
\r
501 Cyclone 68000 core and PicoDrive itself
\r
504 FAME/C 68k interpreter core
\r
505 (based on C68K by Stephane Dallongeville)
\r
507 Stephane Dallongeville (written), NJ (optimized)
\r
508 CZ80 Z80 interpreter core
\r
511 DrZ80, the Z80 interpreter written in ARM assembly.
\r
512 Homepage: http://reesy.gp32x.de/
\r
514 Tatsuyuki Satoh, Jarek Burczynski, MAME development
\r
515 software implementation of Yamaha FM sound generator
\r
518 Texas Instruments SN76489 / SN76496 programmable tone/noise generator
\r
519 Homepage: http://www.mame.net/
\r
521 Stephane Dallongeville
\r
522 Gens, MD/Mega CD/32X emulator. Most Sega CD code is based on this emu.
\r
525 people @ ps2dev.org forums / PSPSDK crew
\r
526 libaudiocodec code (by cooleyes)
\r
534 * Charles MacDonald (http://cgfm2.emuviews.com/) for old but still very useful
\r
535 info about genesis hardware.
\r
536 * Steve Snake for all that he has done for Genesis emulation scene.
\r
537 * Tasco Deluxe for his reverse engineering work on SVP and some mappers.
\r
538 * Bart Trzynadlowski for his SSFII and 68000 docs.
\r
539 * Haze for his research (http://haze.mameworld.info).
\r
540 * Lordus, Exophase and Rokas for various ideas.
\r
541 * Nemesis for his YM2612 research.
\r
543 * Many posters at spritesmind.net forums for valuable information.
\r
544 * Mark and Jean-loup for zlib library.
\r
545 * ketchupgun for the skin.
\r
547 * rlyeh and all the other people behind the minimal library.
\r
548 * Squidge for his famous squidgehack(tm).
\r
549 * Dzz for his ARM940 sample code.
\r
550 * A_SN for his gamma code.
\r
551 * craigix for supplying the GP2X hardware and making this port possible.
\r
552 * Alex for the icon.
\r
553 * All the people from gp32x boards for their support.
\r
556 * Kingcdr's for the SDK and Reesy for the DLL and sound code.
\r
557 * jens.l for supplying the Gizmondo hardware and making this port possible.
\r
559 * Inder for some graphics.
\r
560 * Anyone else I forgot. You know who you are.
\r
566 * Lots of 32X compatibility and accuracy improvements. All commercial games
\r
567 are booting now, but some still have issues.
\r
568 * Fixed some regressions in MegaCD code, like hang in jap BIOS.
\r
569 * Implemented pause for SMS.
\r
570 * Updated UI with improvements from PCSX ReARMed.
\r
571 * Frontend timing has been rewritten, should no longer slowly desync from
\r
573 * Added libretro and SDL 32/64bit ports, fixed compatibility issues with
\r
575 * Various other things I forgot (it has been a while since last release..)
\r
578 + Added Caanoo support. Now the GP2X binary supports GP2X F100/F200, Wiz
\r
579 and Caanoo. Lots of internal refactoring to support this.
\r
580 + Enabled 32X and SMS code. It's still unfinished but better release something
\r
581 now than wait even more (it has been in development for more then a year now
\r
582 due to various other projects or simply lack of time).
\r
583 + Pandora: added hardware scaler support, including ability to resize the
\r
584 layer and control filtering.
\r
585 + GP2X: Added basic line-doubling vertical scaling option.
\r
586 * Changed the way keys are bound, no need to unbind old one any more.
\r
587 * Handle MP3s with ID3 tags better (some MP3s with ID3 did not play).
\r
588 * Improved shadow/hilight color levels.
\r
589 * Fixed broken cheat support.
\r
592 * Pandora: updated documentation.
\r
594 1.80beta1 (2010-06-02)
\r
595 + Added pandora port.
\r
596 * Internal refactoring for 32x/SMS support.
\r
597 * Move mapper database to external file.
\r
598 + Added preliminary SMS emulation.
\r
599 + Added emulation of 32x peripherals including VDP. More work is needed here.
\r
600 + ARM: Added new SH2 recompiler for 32x. Some unification with SVP one.
\r
601 - Disabled most of the above bacause I'm not yet happy with the results.
\r
604 * Changed sync in Sega CD emulation again. Should fix games that
\r
605 broke after changes in 1.51a.
\r
606 * Fixed default keys rebinding when they shouldn't.
\r
607 * Fixed sram being loaded from wrong game.
\r
608 * Emu should no longer hang shortly after using fast-forward.
\r
609 * Fixed save states sometimes no longer showing up in save state menu.
\r
610 * ARM: some asm code refactoring for slight speed improvement.
\r
613 + Added Wiz support. Now the same GP2X binary supports F100/F200 and Wiz.
\r
614 * Changed shadow/hilight handling a bit, fixes some effects in Pirates! Gold.
\r
615 * Complete input code rewrite. This fixes some limitations like not allowing
\r
616 to control both players using single input device. It also allows to use
\r
617 more devices (like keyboards) on Linux based devices.
\r
618 * Options menu has been reordered, "restore defaults" option added.
\r
621 * Fixed a crash when uncompressed savestate is loaded.
\r
622 * Fixed an idle loop detection related hanging problem.
\r
623 * PSP: fixed another palette related regression.
\r
624 * UIQ3: updated frontend for the latest emu core.
\r
627 * Fixed a sync problem between main and sub 68k. Should fix the hanging
\r
628 problem for some games.
\r
629 * ARM: fixed a crash when CD savestate is loaded just after loading ROM.
\r
632 * Improved bin_to_cso_mp3 tool, it should no longer complain about
\r
633 missing lame.exe even if it's in working dir.
\r
634 * Fixed a regression from 1.50, which caused slowdowns in Final Fight.
\r
635 * Fixed some regressions from 1.50 related to sprite limit and palette
\r
636 handling (caused graphical glitches in some games).
\r
637 + Added ABC turbo actions to key config.
\r
638 * Some other minor adjustments.
\r
641 + Added some basic support for Sega Pico, a MegaDrive-based toy.
\r
642 + Added proper support for cue/bin images, including cdda playback.
\r
643 .cue sheets with iso/cso/mp3/wav files listed in them are now
\r
644 supported too (but 44kHz restriction still applies).
\r
645 + Added bin_to_cso_mp3 tool, based on Exophase's bin_to_iso_ogg.
\r
646 The tool can convert .cue/.bin Sega CD images to .cso/.mp3.
\r
647 * Greatly improved Sega CD load times.
\r
648 * Changed how scheduling between 68k and z80 is handled. Improves
\r
649 performance for some games. Credits to Lordus for the idea.
\r
650 * YM2612 state was not 100% saved, this should be better now.
\r
651 * Improved renderer performance for shadow/hilight mode.
\r
652 * Added a hack for YM2612 frequency overflow issue (bleep noises
\r
653 in Shaq Fu, Spider-Man - The Animated Series (intro music), etc.)
\r
654 Credits to Nemesis @ spritesmind forum. Works only if sound rate
\r
656 + Implemented some sprite rendering improvements, as suggested by
\r
657 Exophase. Games with lots of sprites now perform better.
\r
658 + Added better idle loop detection, based on Lordus' idea again.
\r
659 - "accurate timing" option removed, as disabling it no longer
\r
660 improves performance.
\r
661 - "accurate sprites" was removed too, the new sprite code can
\r
662 properly handle sprite priorities in all cases.
\r
663 * Timers adjusted again.
\r
664 * Improved .smd detection code.
\r
665 * ARM: fixed a bug in DrZ80 core, which could cause problems in
\r
667 * ARM: fixed a problem of occasional clicks on MP3 music start.
\r
668 * Minor general optimizations and menu improvements.
\r
669 * Fixed a bug in Sega CD savestate loader, where the game would
\r
670 sometimes crash after load.
\r
671 * Fixed a crash of games using eeprom (introduced in 1.40b).
\r
672 * PSP: fixed suspend/resume (hopefully for real).
\r
675 * Fixed a problem with sound in Marble Madness.
\r
676 * GP2X: Fixed minor problem with key config.
\r
679 * Fixed sprite masking code. Thanks to Lordus for explaining how it works.
\r
680 + Added "disable sprite limit" option.
\r
681 + PSP: added black level adjustment to display options.
\r
682 * Changed reset to act as 'soft' reset.
\r
683 + Added detection for Puggsy (it doesn't really have sram).
\r
684 * Some small timing adjustments.
\r
687 * GP2X: Fixed a binding problem with up and down keys.
\r
688 * Default game config no longer overrides global user config.
\r
691 + Added support for SVP (Sega Virtua Processor) to emulate Virtua Racing,
\r
692 wrote ARM recompiler and some HLE code for VR. Credits to Exophase and
\r
693 Rokas for various ideas.
\r
694 * Changed config file format, files are now human-readable. Game specific
\r
695 configs are now held in single file (but old game config files are still
\r
696 read when new one is missing).
\r
697 * Fixed a bug where some key combos didn't work as expected.
\r
698 * Fixed a regression in renderer (ARM ports only, some graphic glitches in
\r
700 * Adjusted fast renderer to work with more games, including VR.
\r
701 * Fixed a problem where SegaCD RAM cart data was getting lost on reset.
\r
702 * GP2X: Greatly reduced SegaCD FMV game slowdowns by disabling read-ahead
\r
703 in the Linux kernel and C library (thanks to Rokas and Exophase for ideas
\r
704 again). Be sure to keep "ReadAhead buffer" OFF to avoid slowdowns.
\r
705 + PicoDrive now comes with a game config file for some games which need
\r
706 special settings, so they should now work out-of-the-box. More games will
\r
707 be added with later updates.
\r
708 + GP2X: Files now can be deleted by pressing A+SELECT in the file browser.
\r
711 * PSP: mp3 code should no longer fail on 1.5 firmware.
\r
712 + PSP: added gamma adjustment option.
\r
713 + Added .cso ISO format support. Useful for non-FMV games.
\r
714 * It is now possile to force a region after the ROM is loaded.
\r
715 * Fixed a sram bug in memhandlers (fixes Shining in the Darkness saves).
\r
716 * PSP: fixed another bug in memhanlers, which crashed the emu for some games
\r
717 (like NBA Jam and NHL 9x).
\r
718 + PSP: added suspend/resume handling for Sega CD games.
\r
719 + GP2X: added additional low volume levels for my late-night gaming sessions
\r
720 (in stereo mode only).
\r
721 + GP2X: added "fast forward" action in key config. Not recommended to use for
\r
722 Sega CD, may case problems there.
\r
723 * Some other small tweaks I forgot about.
\r
726 * PSP: fixed a bug which prevented to load any ROMs after testing the BIOS.
\r
727 * PSP: fixed incorrect CZ80 memory map setup, which caused Z80 crashes and
\r
728 graphics corruption in EU Mega CD model1 BIOS menus.
\r
729 + PSP: added additional "set to 4:3 scaled" display option for convenience.
\r
730 + PSP: Added an option to disable frame limitter (works only with non-auto frameskip).
\r
733 + PSP port added. Lots of new code for it. Integrated modified FAME/C, CZ80 cores.
\r
734 + Some minor generic optimizations.
\r
735 * Patched some code which was crashing under PSP, but was working in GP2X/Giz
\r
736 (although it should have crashed there too).
\r
740 + Gizmondo port added.
\r
741 + Some new optimizations in memory handlers, and for shadow/hilight mode.
\r
742 + Added some hacks to make more games work without enabling "accurate timing".
\r
743 * Adjusted timing for "accurate timing" mode and added preliminary VDP FIFO
\r
744 emulation. Fixes Double Dragon 2, tearing in Chaos Engine and some other games.
\r
745 * Fixed a few games not having sound at startup.
\r
746 * Updated serial EEPROM code to support more games. Thanks to EkeEke for
\r
747 providing info about additional EEPROM types and game mappers.
\r
748 * The above change fixed hang of NBA Jam.
\r
749 * Minor adjustments to control configurator.
\r
752 * Updated Cyclone core to 0.0088.
\r
753 + Added A r k's usbjoy fix.
\r
754 + Added "perfect vsync" option, which adjusts GP2X LCD refresh rate and syncs
\r
755 emulation to it to eliminate tearing and ensure smoothest scrolling possible.
\r
756 + Added an option to use A_SN's gamma curve for gamma correction (improves dark
\r
757 and bright color display for mk2s).
\r
758 * Sometimes stray sounds were played after loading a savestate. Fixed.
\r
759 * Fixed a problem where >6MB mp3s were corrupted in memory (sound glitches in
\r
761 * PD no longer overwrites video player code in memory, video player now can be
\r
762 used after exiting PicoDrive.
\r
763 * Fixed a bug which was causing Sonic 3 code to deadlock in some rare conditions
\r
764 if "accurate timing" was not enabled.
\r
765 * Fixed support for large hacked ROMs like "Ultimate Mortal Kombat Trilogy".
\r
766 Upto 10MB hacked ROMs are supported now.
\r
767 + Config profiles added (press left/right when saving config).
\r
768 * Changed key configuration behavior to the one from gpfce (should be more
\r
770 + Added some skinning capabilities to the menu system with default skin by
\r
771 ketchupgun. Delete skin directory if you want old behaviour.
\r
772 * Some other little tweaks I forgot about.
\r
775 + Added some new scaling options.
\r
776 + Added ability to reload CD images while game is running (needed for games
\r
777 with multiple CDs, like Night Trap).
\r
778 + Added RAM cart emulation.
\r
779 * Fixed DMA timing emulation (caused lock-ups for some genesis games).
\r
780 * Idle loop detection was picking up wrong code and causing glitches, fixed.
\r
781 * The ym2612 code on 940 now can handle multiple updates per frame
\r
782 (fixes Thunger Force III "seiren" level drums for example).
\r
783 * Memory handlers were ignoring some writes to PSG chip, fixed (missing sounds in
\r
784 Popful Mail, Silpheed).
\r
785 * Improved z80 timing, should fix some sound problems.
\r
786 * Fixed a bug with sram register (fixes Phantasy Star 4).
\r
787 * ROM loader was incorrectly identifying some ROMs as invalid. Fixed.
\r
788 * Added code for PRG ram write protection register (Dungeon Explorer).
\r
789 * The memory mode register change in 1.31 was unsafe and caused some glitches in
\r
790 AH-3 Thunderstrike. Fixed.
\r
791 * Fixed a file descriptor leak.
\r
792 * Updated documentation, added Gmenu2x manual.
\r
795 * Changed the way memory mode register is read (fixes Lunar 2, broken in 1.30).
\r
796 * Fixed TAS opcode on sub-68k side (fixes Batman games).
\r
797 * File browser now filters out mp3s, saves and some other files, which are not ROMS.
\r
800 + ISO files now can be zipped. Note that this causes VERY long loading times.
\r
801 + Added data pre-buffering support, this allows to reduce frequency of short pauses
\r
802 in FMV games (caused by SD access), but makes those pauses longer.
\r
803 * Fixed PCM DMA transfers (intro FMV in Popful Mail).
\r
804 + Properly implemented "decode" data transformation (Jaguar XJ220).
\r
805 * Integrated "better sync" code into cyclone code, what made this mode much faster.
\r
806 * Fixed a bug related to game specific config saving.
\r
807 * Frameskipper was skipping sound processing, what caused some audio desyncs. Fixed.
\r
808 * Fixed reset not working for some games.
\r
809 + New assembly optimized memory handlers for CD (gives at least a few fps).
\r
810 Also re-enabled all optimizations from 0.964 release.
\r
811 + New idle-loop detection code for sub-68k. Speeds up at least a few games.
\r
814 + Added basic cheat support (GameGenie and Genecyst patches).
\r
817 * Fixed a long-standing problem in audio mixing code which caused slight distortions
\r
818 at lower sample rates.
\r
819 * Changed the way 920 and 940 communicates (again), should be more reliable and give
\r
820 slight performance increase.
\r
821 * Some optimizations in audio mixing code.
\r
822 * Some menu changes (background added, smaller font in ROM browser, savestate loader
\r
823 now can select slots).
\r
824 + 1M mode DMA transfers implemented (used by FMV games like Night Trap and Sewer Shark).
\r
825 + Games now can run code from WORD RAM in 1M mode (fixes Adventures of Willy Beamish).
\r
826 + "Cell arrange" address mapping is now emulated (Heart of the alien).
\r
827 + "Color numeric operation" is now emulated (text in Lunar 2, Silpheed intro graphics).
\r
828 + "Better sync" option added (prevents some games from hanging).
\r
831 + Region autodetection now can be customized.
\r
832 * When CDDA music tracks changed, old buffer contents were incorrectly played. Fixed.
\r
833 * BRAM is now automatically formatted (no need to enter BIOS menu and format any more).
\r
834 * Games now can be reset, CDDA music no longer breaks after loading another ISO.
\r
835 * Fixed a race condition between 920 and 940 which sometimes caused CDDA music not to play.
\r
836 + Savestates implemented for Sega/Mega CD.
\r
838 * Some mixer code rewritten in asm. 22kHz and 11kHz sound rates are now supported in
\r
839 Mega CD mode (but mp3s must still be 44kHz stereo).
\r
840 + Timer emulation added.
\r
841 * CDC DMA tansfers fixed. Snatcher and probably some more games now boot.
\r
842 * 2M word RAM -> VDP transfers fixed, no more corruption in Ecco and some other games.
\r
845 + GP2X: Added experimental Sega CD support.
\r
846 + GP2X: Added partial gmv movie playback support.
\r
849 * GP2X: Fixed a sound buffer underflow issue on lower sample rate modes, which was
\r
850 happening for NTSC games and causing sound clicks.
\r
851 * GP2X: Redone key config to better support USB joysticks (now multiple joysticks
\r
852 should be useable and configurable).
\r
853 + GP2X: Added save confirmation option.
\r
854 + GP2X: Added 940 CPU crash detection.
\r
855 + ALL: UIQ3 port added.
\r
858 * GP2X: Gamma-reset-on-entering-menu bug fixed.
\r
859 * GP2X: Recompiled PicoDrive with gcc profiling option set as described here:
\r
860 http://www.gp32x.com/board/index.php?showtopic=28490
\r
863 * GP2X: Fixed an issue with incorrect sounds in some games when dualcore operation
\r
864 was enabled (for example punch sound in SOR).
\r
865 * GP2X: Limited max volume to 90, because higher values often cause distortions.
\r
866 * GP2X: Fixed a bug with lower res scaling.
\r
867 * GP2X: Gamma is now reset on exit.
\r
870 * ALL: Severely optimized MAME's YM2612 core, part of it is now rewritten in asm.
\r
871 + GP2X: The YM2612's code now can be run in GP2X's ARM940T CPU, what causes large
\r
872 performance increase.
\r
873 * ALL: Accurate renderers are slightly faster now.
\r
874 + GP2X: Using quadruple buffering instead of doublebuffer now, also updated
\r
875 framelimitter, this should eliminate some scrolling and tearing problems.
\r
876 * GP2X: Fixed some flickering issues of 8bit accurate renderer.
\r
877 + GP2X: craigix's RAM timings now can be enabled in the menu (see advanced options).
\r
878 + GP2X: Added ability to save config for specific games only.
\r
879 + GP2X: Gamma control added (using GP2X's hardware capabilities for this).
\r
880 * GP2X: Volume keys are now configurable.
\r
881 + GP2X: GnoStiC added USB joystick support, I made it possible to use it for
\r
882 player 2 control (currently untested).
\r
883 * GP2X: squidgehack is now applied through kernel module (cleaner way).
\r
886 * ALL: Fixed a bug in sprite renderer which was causing slowdowns for some games.
\r
887 + GP2X: Added command line support
\r
888 + GP2X: Added optional hardware scaling for lower-res games like Shining Force.
\r
889 * ALL: Sound chips are now sampled 2 times per frame. This fixed some games which
\r
890 had missing sounds (Vectorman 2 1st level, Thunder Force 3 water level,
\r
892 + ALL: Added another accurate 8-bit renderer which is slightly faster and made it
\r
896 + GP2X: Added frame limiter for frameskipped modes.
\r
897 * GP2X: Increased brightness a bit (unused pixel bits now also contain data).
\r
898 * GP2X: Suidgehack was not applied correctly (was applied before allocating some
\r
899 high memory and had no effect).
\r
903 * Improved interrupt timing, Mazin Saga and Burning Force now works.
\r
904 * Rewritten renderer code to better suit GP2X, should be faster on other
\r
906 + Added support for banking used by 12-in-1 and 4-in-1 ROMs (thanks Haze).
\r
907 + Added some protection device faking, used by some unlicensed games like
\r
908 Super Bubble Bobble, King of Fighters, Elf Wor, ... (thanks to Haze again)
\r
909 + Added primitive Virtua Racing SVP faking, so menus can be seen now.
\r
912 * Fixed a problem with P900/P910 key configuration in FC mode.
\r
913 * Improved shadow/hilight mode emulation. Still not perfect, but should be
\r
914 enough for most games.
\r
915 + Save state slots added.
\r
916 + Region selector added.
\r
920 * VDP emulation is now more accurate (fixes flickering in Chase HQ II,
\r
921 Super Hang-On and some other problems in other games).
\r
922 * HV counter emulation is now much more accurate. Fixes the Asterix games,
\r
923 line in Road Rash 3, etc.
\r
924 * Minor sprite and layer scroll masking bugs fixed.
\r
925 + Added partial interlace mode renderer (Sonic 2 vs mode)
\r
926 * Fixed a crash in both renderers when certain size window layers were used.
\r
927 + Added emulation of shadow/hilight operator sprites. Other shadow/hilight
\r
928 effects are still unemulated.
\r
929 + Sprite emulation is more accurate, sprite limit is emulated.
\r
930 + Added "accurate sprites" option, which always draws sprites in correct
\r
931 order and emulates sprite collision bit, but is significantly slower.
\r
934 * Improved interrupt handling, added deferred interrupt emulation
\r
936 + Added serial EEPROM SRAM support (Wonder Boy in Monster World,
\r
937 Megaman - The Wily Wars and many EA sports games like NBA Jam).
\r
938 + Implemented ROM banking for Super Street Fighter II - The New Challengers
\r
939 * Updated to the latest version of DrZ80 core, integrated memory handlers
\r
940 in it for better performance. A noticeable performance increase, but save
\r
941 states may not work from the previous version (you can only use them with
\r
942 sound disabled in that case).
\r
943 + SRAM word read handler was using incorrect byte order, fixed.
\r
945 Changes in Cyclone 0.0086:
\r
946 + Added missing CHK opcode handler (used by SeaQuest DSV).
\r
947 + Added missing TAS opcode handler (Gargoyles,Bubba N Stix,...). As in real genesis,
\r
948 memory write-back phase is ignored (but can be enabled in config.h if needed).
\r
949 + Added missing NBCD and TRAPV opcode handlers.
\r
950 + Added missing addressing mode for CMP/EOR.
\r
951 + Added some minor optimizations.
\r
952 - Removed 216 handlers for 2927 opcodes which were generated for invalid addressing modes.
\r
953 + Fixed flags for ASL, NEG, NEGX, DIVU, ADDX, SUBX, ROXR.
\r
954 + Bugs fixed in MOVEP, LINK, ADDQ, DIVS handlers.
\r
955 * Undocumented flags for CHK, ABCD, SBCD and NBCD are now emulated the same way as in Musashi.
\r
956 + Added Uninitialized Interrupt emulation.
\r
957 + Altered timing for about half of opcodes to match Musashi's.
\r
960 * Nearly all VDP code was rewritten in ARM asm. Gives ~10-25% performance
\r
961 increase (depends on game).
\r
962 * Optimized 32-column renderer not to render tiles offscreen, games which
\r
963 use 32-column display (like Shining Force) run ~50% faster.
\r
964 + Added new "Alternative renderer", which gives another ~30-45% performance
\r
965 increase (in addition to mentioned above), but works only with some games,
\r
966 because it is missing some features (it uses tile-based rendering
\r
967 instead of default line-based and disables H-ints).
\r
968 + Added "fit2" display mode for all FC gamers. It always uses 208x146 for
\r
969 P800 and 208x208 for all other phones.
\r
970 + Added volume control for Motorolas (experimental).
\r
973 + Added support for vertical window (used by Vapor Trail, Mercs, GRIND
\r
974 Stormer and others).
\r
975 + Added sprite masking (hiding), adds some speed.
\r
976 + Added preliminary H counter emulation. Comix Zone and Sonic 3D Blast
\r
977 special stage are now playable.
\r
978 + Added column based vertical scrolling (Gunstar Heroes battleship level,
\r
979 Sonic and Knuckles lava boss, etc).
\r
982 + Re-added and improved Z80 faking when Z80 is disabled. Many games now can
\r
983 be played without enabling Z80 (Lost Vikings, Syndicate, etc), but some
\r
984 still need it (International Superstar Soccer Deluxe).
\r
985 * Improved ym2612 timers, Outrun music plays at correct speed, voices in
\r
986 Earthworm Jim play better, more games play sound.
\r
987 * I/O registers now remember their values (needed for Pirates! Gold)
\r
988 + Added support for 6 button pad.
\r
990 Changes in Cyclone 0.0083wip:
\r
991 + Added missing CHK opcode (used by SeaQuest DSV).
\r
992 + Added missing TAS opcode (Gargoyles). As in real genesis, write-back phase
\r
993 is ignored (but is enabled for other systems).
\r
995 Backported stuff from Snes9x:
\r
996 * Fixed Pxxx jog up/down which were not working in game.
\r
997 + Added an option to gzip save states to save space.
\r
998 + The emulator now pauses whenever it is loosing focus, so it will now pause
\r
999 when alarm/ponecall/battery low/... windows come up.
\r
1000 - Removed 'pause on phonecall' feature, as it is no longer needed.
\r
1001 + Video fix for asian A1000s.
\r
1004 * Started using tools from "Symbian GCC Improvement Project", which give
\r
1005 considerable speed increase (~4fps in "center 90" mode).
\r
1006 * Rewrote some drawing routines in ARM assembly (gives ~6 more fps in
\r
1007 "center 90" mode).
\r
1008 * Minor improvement to 0 and 180 "fit" modes. Now they look slightly better
\r
1010 * Minor stability improvements (emulator is less likely to crash).
\r
1011 + Added some background for OSD text for better readability.
\r
1012 + Added Pal/NTSC detection. This is needed for proper sound speed.
\r
1013 + Implemented Reesy's DrZ80 Z80 emu. Made some changes to it with hope to make
\r
1015 + Implemented ym2612 emu from the MAME project. Runs well but sometimes sounds
\r
1016 a bit weird. Could be a little faster, so made some changes too.
\r
1017 + Implemented SN76489 emu from the MAME project.
\r
1018 + Added two separate sound output methods (mediaserver and cmaudiofb) with
\r
1019 autodetection (needs testing).
\r
1020 * Fixed VDP DMA fill emulation (as described in Charles MacDonald's docs),
\r
1021 fixes Contra and some other games.
\r
1025 * Launcher now starts emulation process from current directory,
\r
1026 not from hardcoded paths.
\r
1027 * Improved 'pause on call' feature, should hopefully work with Motorola phones.
\r
1036 This program and it's code is released under the terms of MAME license:
\r
1038 Redistribution and use of this code or any derivative works are permitted
\r
1039 provided that the following conditions are met:
\r
1041 * Redistributions may not be sold, nor may they be used in a commercial
\r
1042 product or activity.
\r
1044 * Redistributions that are modified from the original source must include the
\r
1045 complete source code, including the source code for all components used by a
\r
1046 binary built from the modified sources. However, as a special exception, the
\r
1047 source code distributed need not include anything that is normally distributed
\r
1048 (in either source or binary form) with the major components (compiler, kernel,
\r
1049 and so on) of the operating system on which the executable runs, unless that
\r
1050 component itself accompanies the executable.
\r
1052 * Redistributions must reproduce the above copyright notice, this list of
\r
1053 conditions and the following disclaimer in the documentation and/or other
\r
1054 materials provided with the distribution.
\r
1056 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
\r
1057 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\r
1058 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\r
1059 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
\r
1060 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
\r
1061 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
\r
1062 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
\r
1063 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
\r
1064 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
\r
1065 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
\r
1066 POSSIBILITY OF SUCH DAMAGE.
\r
1068 SEGA/Genesis/MegaDrive/SEGA-CD/Mega-CD/32X are trademarks of
\r
1069 Sega Enterprises Ltd.
\r
notaz.gp2x.de / picodrive.git / blob