A start on CPS3 emulation, woo!

powerspike · Post by **powerspike** » Wed Jun 20, 2007 6:10 am

http://www.speksnk.org/foro/viewtopic.p ... sc&start=0

-CPU: Emulated
-Graphics:

*Tiles 8x8: Emulated
*Tiles 16x16: Emulated
*Sprites: Emulated
*Global offset: Emulated
*Sprite color palette: Emulated
*Tileflip within tileblock: Emulated
*zoom: Emulated
*Priorities: Emulated
*Linezoom: Not emulated
*Rowscroll: Emulated
*Transparencies: Emulated

-Sound: Emulated
-Controls: Emulated
-CDROM: Emulated

Seems a 3.2 Ghz system gets around 300 to 400 FPS in Elsemi's emulator. Er Lemmie know if anything sounds odd. I had to use a machine translator and do some guess work since I don't know Spanish.

Edit: Updated. Looks like I was wrong about the speed hit. : )

byuu · Post by **byuu** » Wed Jun 20, 2007 8:55 am

Man, I'm always amazed at how fast the arcade emulation scene moves ...

I think that part of the Wikipedia article was written before anyone knew anything about the hardware aside from "Damn, Street Fighter 3 is sexy!".

Wikipedia is helpful to quickly get popular opinion on a subject, but absolutely fucking worthless for actual research. The few people who actually know what they're talking about just have their articles reverted and ignored.

The amount of time and effort that goes into articles there is usually on par with effort put into LiveJournal blog postings about what someone ate for dinner the night before.

alexz721 · Post by **alexz721** » Wed Jun 20, 2007 10:04 pm

I don't know much about the hardware, but I do know that the ST-V system (games like Shienryu, Batman Forever, Radiant Silvergun, Cotton 2, etc.) is the most advanced 2D arcade system, according to the developers of MAME. Since about half the ST-V games run at playable speed and the other half don't, I'm going to throw out a guess that a relatively advanced computer can handle CPS3. If not, oh well.

Oh, and if you want accurate hardware specs from somewhere other than Wikipedia, try system16.com, specifically

http://www.system16.com/hardware.php?id=799 and
http://www.system16.com/hardware.php?id=711

powerspike · Post by **powerspike** » Wed Jun 20, 2007 10:37 pm

They sure do work fast! Some stuff I posted up there is outdated now.

http://nebula.emulatronia.com/

Post by **Agozer** » Wed Jun 20, 2007 11:24 pm

As it is to be expected from ElSemi's Preview Test Version of his CPS-3 emulator, it has lots of graphical glitches across all games, but all the games are highly playable and fast.

Jojo's Bizarre Adventure is indeed bizarre. FTW.

blackmyst · Post by **blackmyst** » Thu Jun 21, 2007 1:48 am

Oh man, Warzard looks good, even with the glitches. Just helps to remind me how much it sucks that the industry went pretty much exclusively 3D. :(

Somehow this also makes me feel nostalgic for the early days of CPS2 emulation with all the graphic errors and such, haha.

What was on the CDroms anyway? Intro FMV?

powerspike · Post by **powerspike** » Thu Jun 21, 2007 3:42 am

blackmyst wrote: What was on the CDroms anyway? Intro FMV?

Haze said that it was only used for protection. Kind of an odd system if you ask me.

franpa · Post by **franpa** » Thu Jun 21, 2007 4:26 am

powerspike wrote:
blackmyst wrote: What was on the CDroms anyway? Intro FMV?
Haze said that it was only used for protection. Kind of an odd system if you ask me.

how so? i don't think game cube games are cracked yet.

snkcube · Post by **snkcube** » Thu Jun 21, 2007 7:02 am

franpa wrote:how so? i don't think game cube games are cracked yet.

There are GameCube ISOs floating around the net. Hence, you can play GameCube games using emulators.

powerspike · Post by **powerspike** » Thu Jun 21, 2007 7:16 am

franpa wrote:how so? i don't think game cube games are cracked yet.

I meant it was odd because they didn't use the CDROM to store any game data. I have no fucking clue how the system really works. D:

franpa · Post by **franpa** » Thu Jun 21, 2007 9:12 am

snkcube wrote:
franpa wrote:how so? i don't think game cube games are cracked yet.
There are GameCube ISOs floating around the net. Hence, you can play GameCube games using emulators.

yes, but unlike other consoles that use CD/DVD it costs a fair bit to make your own images iirc.

sweener2001 · Post by **sweener2001** » Thu Jun 21, 2007 9:30 am

shut up, they're cracked, you lose, end of story.

are you going to tell me that the dreamcast isn't cracked because of the effort required in getting an image? shut up.

Post by **Agozer** » Thu Jun 21, 2007 11:44 am

The CPS-3 had the most probably the strangest and the most intricate encryption mechanism of its time. IIRC, the encryption/decryption data was either stored partially or streamed to RAM, and if something went wrong in the process or the system detected tampering (like trying to dump stuff), the RAM would go blank. and the decryption keys went up in smoke.

The current MAME dumps are the NOCD versions, which are most likely less strict as all the data is stored on the PCB.

powerspike · Post by **powerspike** » Thu Jun 21, 2007 12:15 pm

Huh you're right, sorry about that. I misunderstood a post that haze made about the NOCD stuff (glanced over it). Didn't realize there was a version of the CPS3 boards that didn't use a CDROM. Ah well I'm just happy it finally got cracked really. Back in the day people were always begging for it on the mame forums.

alexz721 · Post by **alexz721** » Thu Jun 21, 2007 10:02 pm

Agozer wrote:The CPS-3 had the most probably the strangest and the most intricate encryption mechanism of its time. IIRC, the encryption/decryption data was either stored partially or streamed to RAM, and if something went wrong in the process or the system detected tampering (like trying to dump stuff), the RAM would go blank. and the decryption keys went up in smoke.

The current MAME dumps are the NOCD versions, which are most likely less strict as all the data is stored on the PCB.

Nah, the MAMEdevs have consistently said that CPS2 has way more complex encryption.

ssjkakaroto · Post by **ssjkakaroto** » Sat Jun 23, 2007 4:32 pm

MAME has dumped everything (both the EEPROMs and the discs). What changes between the versions is the BIOS, you use the same roms to play both the NOCD and CD versions.
Right now they can't properly emulate the use of the discs (CHDs), so they are using the NOCD BIOS, but the games are the same.

blackmyst · Post by **blackmyst** » Sun Jun 24, 2007 12:29 am

The new test version up at http://nebula.emulatronia.com/ looks awesome. And it runs smooth as butter on my single core athlon 64 3200+ despite the fullscreen zoom being implemented (which was said would be slow). Only SF3 third strike doesn't seem to work right yet (maybe I've got a bad dump?).

snkcube · Post by **snkcube** » Sun Jun 24, 2007 7:51 am

SF3: Third Strike works pretty well for me. You might be missing some files?

Post by **Agozer** » Fri Jun 29, 2007 2:21 am

ElSemi released the Preview Test Version 3 of his emulator a while a go. Most of the CPS-3 stuff has been figured out.