Regen for Linux and Windows

funkyass · Post by **funkyass** » Tue Sep 16, 2008 6:52 am

you don't need to have done anything constructive to be mentioned in the credits of anything.

DancemasterGlenn · Post by **DancemasterGlenn** » Tue Sep 16, 2008 3:26 pm

SmartOne wrote:I try not to offend to avoid stupid conflicts like this. But the people on this board are frustrating me.

We're sorry :(

SmartOne · Post by **SmartOne** » Tue Sep 16, 2008 6:06 pm

funkyass wrote:you don't need to have done anything constructive to be mentioned in the credits of anything.

Thus:

SmartOne wrote:(according to the credits.)

I was curious, and I still am.

King Of Chaos · Post by **King Of Chaos** » Tue Sep 16, 2008 6:38 pm

Well, it should be in another topic... since it has nothing to do with Regen at all.

As for me, I got wind of a possible issue that can cause a crash, so I'm going to see if I can hunt it down and reproduce it.

Post by **grinvader** » Tue Sep 16, 2008 7:46 pm

SmartOne wrote:Not an attack.

Not antagonizing you for the hell of it.

I sure hope you won't regret that.

AamirM · Post by **AamirM** » Thu Sep 18, 2008 6:03 am

Hi,

I am very busy with the university right now so don't expect to receive responses from me any time soon

.

stay safe,

AamirM

AamirM · Post by **AamirM** » Fri Sep 19, 2008 7:34 pm

Hi,

Got a bit free time today so might as well post some answers.

Metatron wrote: I'm busy recommending this emulator to people, and I'm wondering if Sega CD/32X support will ever be added in the future?

Yes there will be, but not any time soon. All the Sega consoles before Saturn will be there too hopefully (including SF7000 addon).

85cocoa wrote: A related feature request: Could we consider maintaining a database of ROMs which require specific Autofix Checksum settings (for inclusion with a future version of Regen)?

The idea is good but I want to remain as far away from databases as possible for now. Maybe in future.

SmartOne wrote: Rocket Knight Adventures doesn't sound crystal clear like it does in Kega. Listen to the Konami screen and the title screen sounds.

Hear all the cracklies. Hairy, even.

Is this "more accurate" than Kega, or just not quite there yet?

What Regen is outputing is the sound which comes directly out of the chip without any filtering (which is later applied by other things). If you listen to the same thing using the VGM plugin which uses GME which in turn applies filtering, the crackliness disappears. There is a Lowpass filtering option given (if you didn't notice

) which was mainly added to increase bass in the output to simulate filtering done by "my" TV (and what I heared from it). But again, since TV has the option to set bass (and treble) you may have set it for crispy sound so the result can vary.

King Of Chaos wrote: I wonder if the things we hear is because of the 48000Mz rate Regen uses for SuperHQ mode over the 44100Mz rate Kega uses.

Its not much important that Kega uses 44100Hz but more that how it resamples to that. When you log WAV in Regen in SHQ mode it will be in 53Khz. Download foobar2000 and the SRC(Secret Rabit Code) DSP plugin for it. Choose 44100 from its configuration and different resampling algorithms (linear/sinc interpolation) and compare with Regen and Kega and if you find any differences then tell me

.

@ Kega vs. Regen talk:

Seriously, I am not trying to compete with Kega or any other emulator for that matter. I am trying to achieve maximum accuracy. Thats it.

stay safe,

AamirM

King Of Chaos · Post by **King Of Chaos** » Fri Sep 19, 2008 7:47 pm

Good idea, I'm going to do some recordings to compare a little later.

tetsuo55 · Post by **tetsuo55** » Fri Sep 19, 2008 7:57 pm

Why do checksums need to be fixed?

AamirM · Post by **AamirM** » Fri Sep 19, 2008 8:04 pm

Hi,

Some games check these (for integrity) and will lock if not correct (red or black screen). Some games (puggsy) use it for protection as well.

stay safe,

AamirM

tetsuo55 · Post by **tetsuo55** » Fri Sep 19, 2008 8:09 pm

AamirM wrote:Hi,

Some games check these (for integrity) and will lock if not correct (red or black screen). Some games (puggsy) use it for protection as well.

stay safe,

AamirM

So correct dumps don't need this fix right?

AamirM · Post by **AamirM** » Fri Sep 19, 2008 8:18 pm

Hi,

As long as the expected checksum is generated, yes. But many games don't check the checksum.

stay safe,

AamirM

tetsuo55 · Post by **tetsuo55** » Fri Sep 19, 2008 8:27 pm

Then the games that require checksums to be fixed are either bad dumps or have broken headers that need fixing.

Do we have a list of games that require fixing?

Then from that list, does the no-intro version of the game still need the fix?

King Of Chaos · Post by **King Of Chaos** » Fri Sep 19, 2008 8:49 pm

Some ROMS are supposed to have a bad checksum to run. If you run into a red screen with auto-fix checksum enabled, it's one of those games.

Just like some games need SRAM to be disabled to run correctly (Pugsy for example).

tetsuo55 · Post by **tetsuo55** » Fri Sep 19, 2008 8:54 pm

King Of Chaos wrote:Some ROMS are supposed to have a bad checksum to run. If you run into a red screen with auto-fix checksum enabled, it's one of those games.

Just like some games need SRAM to be disabled to run correctly (Pugsy for example).

Yeah, so in those cases the rom is wrong and the emulator is correct. Auto-checksumfixing should not be needed.(could be used as a compatibility feature if the other pcb code fails)

Official Genesis roms seem to have headers to have all the information needed for correct mappers.(not all programmers actually filled the entire headed with the correct information)

This means that things like databases and checksum fixes and pcb guessers should not be needed for correct dumps(although some would need updated headers to supply the information the programmers forgot to add).

SmartOne · Post by **SmartOne** » Sat Sep 20, 2008 12:48 am

Forgot about the "invisible" filters factor. Raw is good, AamirM! Thanks for the refresh.

I might try out that DSP plugin, too.

AamirM · Post by **AamirM** » Sat Sep 20, 2008 7:10 am

Hi,

tetsuo55 wrote: Official Genesis roms seem to have headers to have all the information needed for correct mappers.(not all programmers actually filled the entire headed with the correct information)

Some games have extra on-cartridge hardware (like SVP for VirtuaRacing, Super Street fighters banking, many unlicensed games with protections, games with EEPROMs and some other things) which is not mentioned in the headers so we have to resort to CRC and header matching to make those games work properly. So a little database is there in Regen to detect those things only and I want it to keep it to that only.

All in all, I never saw any need for a database. The headers in Genesis are enough.

stay safe,

AamirM

SmartOne · Post by **SmartOne** » Sat Sep 20, 2008 2:18 pm

Regen doesn't let VGM_PLAY automatically load its rom build. http://www.spritesmind.net/_GenDev//for ... .php?t=442
Intead, Regen thinks it's the first time starting up, and there's an error.

AamirM · Post by **AamirM** » Sat Sep 20, 2008 3:38 pm

Hi,

Thats a problem with the command line code. Will fix that

.

EDIT:

For those who don't know, a dedicated Regen board is now located here. It is recommended that all Regen related things be discussed there from now on so that this thread does not exceed memory limits anymore. Mods may want to lock this thread.

stay safe,

AamirM