Search found 307 matches

by tryphon
Tue Apr 23, 2019 5:19 pm
Forum: Sound
Topic: Some beginner questions concerning YM2612
Replies: 24
Views: 5240

Re: Some beginner questions concerning YM2612

1) Ok, seems a misconception of the word "tone" here. They indeed are half-tones (or semi-tones). 2, 3) Thanks for clarifying. 4) Thanks. I've just discovered the translation of the japanese manual posted by Nemesis years ago, it explained where these figures came from. I'm looking into it for answe...
by tryphon
Tue Apr 23, 2019 9:25 am
Forum: Sound
Topic: Some beginner questions concerning YM2612
Replies: 24
Views: 5240

Re: Some beginner questions concerning YM2612

And another one : Concerning frequency, the document at smspower linked above says a typical 12 tones sequence is : Low High 617 653 692 733 777 823 872 924 979 1037 1099 1164 635 372 392 755 800 847 898 951 1008 1131 1199 (36) (39) (41) (44) (46) (49) (52) (55) (58) (62) (70) That leads to several ...
by tryphon
Tue Apr 23, 2019 7:04 am
Forum: Sound
Topic: Some beginner questions concerning YM2612
Replies: 24
Views: 5240

Re: Some beginner questions concerning YM2612

Not much success, but I have more questions 8) Concerning volume envelope, what are the resolution of both time and amplitude ? For the 1st part of the envelope, I understand that I must "add" AR to the amplitude, but how often ? Also, I read that one unit in AR was equivalent to a gain of 0.75 dB, ...
by tryphon
Sun Apr 21, 2019 8:43 pm
Forum: Sound
Topic: Some beginner questions concerning YM2612
Replies: 24
Views: 5240

Some beginner questions concerning YM2612

Sorry for the naive questions, but I'm totally new to these things... Since it's a technical question about something I don't master, I'll ask in English and in French, in case my English would be a little broken. Also, if your French is better than your English, please answer in French, it'll be ea...
by tryphon
Sat Apr 13, 2019 1:27 pm
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

As for compiling, might as well try out M.A.M.E. since it has integrated M.E.S.S for quite some time (so you can run arbitrary ROMs), but I believe they both have the drivers framework in there. Been quite a while since I last compiled M.A.M.E. but what I remember was mumbo jumbo macro magic. I alr...
by tryphon
Sat Apr 13, 2019 1:19 pm
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

And I'd punch you in the face if you removed that :​v (same goes for window plane) Challenge accepted :twisted: Once you figure out how to make good use of them you definitely won't want to lose them. Same goes for extra palettes. And it's easier to figure out. This is also why I had pushed for VDP...
by tryphon
Sat Apr 13, 2019 7:54 am
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

Yes, you can more or less see that as a fanboy wishful thinking :mrgreen: Concerning costs, I want to remove Shadow/Hilight, I'd be surprised if it wouldn't compensate for added palettes. The VDP would still produce less impressive images than the SNES one (apart the resolution), but I'd be very cur...
by tryphon
Fri Apr 12, 2019 7:35 pm
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

Ni, that's not what I want. MD has enough CPU power for its age and I don't want mode 7.

Just more palettes and more colors, and not so much. Then again something that would have been achievable, at more or less the same price.
by tryphon
Fri Apr 12, 2019 4:14 pm
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

Yeah, System C2 isn't compatible in any form. Not only there's no Z80, the YM2612 is at a different address, I/O is completely different, there's a watchdog, CRAM is 68000 mapped, it uses the VDP's own EDClk instead of the external one the Mega Drive uses, it uses the VDP's DRAM mode (which is an i...
by tryphon
Wed Apr 10, 2019 10:01 am
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

There are much more analogies between the C2 and the Megadrive, than between both of them and the System16 (the idea that MD hardware comes from System16 is likely a bad interpretation, or a "commercial" claim). But indeed, if there's no Z80, retrocompatibility is doomed... So... compiling GenesisPl...
by tryphon
Wed Apr 10, 2019 7:32 am
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

Is there a known MD emulator handling System C2, and can we find documentation about those extra abilities ?

Also, is the system C2 backward compatible with MD ? (will a MD rom load and run normally ?)
by tryphon
Wed Apr 10, 2019 6:36 am
Forum: Exodus
Topic: Active Disassembly - Post Processor
Replies: 14
Views: 2248

Re: Active Disassembly - Post Processor

Thanks.

I downloaded Peasauce last week, trying to play with its source. Didn't know it was aimed to replace resource though.
by tryphon
Tue Apr 09, 2019 7:48 pm
Forum: Exodus
Topic: Active Disassembly - Post Processor
Replies: 14
Views: 2248

Re: Active Disassembly - Post Processor

Do you have any tutorial about ressource ?
by tryphon
Tue Apr 09, 2019 3:53 pm
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

Still can't compile Genesis Plus.

I find lines like :

Code: Select all

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
M68KMAKE_PROTOTYPE_HEADER
in m68k_in.c

How is it supposed to be correct ?
by tryphon
Tue Apr 09, 2019 1:55 pm
Forum: Megadrive/Genesis
Topic: Compiling an emulator for enhanced Megadrive
Replies: 42
Views: 7909

Re: Compiling an emulator for enhanced Megadrive

Yes I had figured :mrgreen: But I can't find anything about it on the web...