Search found 25 matches

by Mamizou
Fri Dec 19, 2014 6:47 am
Forum: Sound
Topic: New Documentation: An authoritative reference on the YM2612
Replies: 859
Views: 377740

Hi again; I just noticed that a couple more things were posted to siliconpr0n. The YM2203 and YM2413 . I definitely see a lot of the same func. blocks in the YM2203 compared to the YM2612, but they're laid out in a weird way (PG on the opposite side as the sine/exponential roms?). In the lower-right...
by Mamizou
Wed Dec 18, 2013 12:36 am
Forum: Sound
Topic: SUPER PSG (SPSG) VST SN76489 with extended features
Replies: 4
Views: 2933

Very awesome! Yousuke Yasui was tweeting about it too. :D
by Mamizou
Sun Nov 03, 2013 5:27 am
Forum: Sound
Topic: New Documentation: An authoritative reference on the YM2612
Replies: 859
Views: 377740

Just a heads up, someone at siliconpr0n.org decapsulated a YM3438 and did high-res scans of the metal layer. It's definitely a different layout than the YM2612, although the typical YM chip functional blocks are still recognizable. Looks like the EG was shifted to being 'below' the ROMs instead of o...
by Mamizou
Thu Jun 13, 2013 2:46 pm
Forum: Exodus
Topic: Making Exodus Open Source: What license model to use?
Replies: 38
Views: 16660

The GPL is specifically designed to try and force other projects to use the GPL too. I don't want to impose license restrictions on other projects, I simply want to retain the open source nature of code contributed to Exodus. B-but, with the GPL you have the power of Richard Stallman's beard! And i...
by Mamizou
Wed Jun 12, 2013 3:43 am
Forum: Exodus
Topic: Making Exodus Open Source: What license model to use?
Replies: 38
Views: 16660

I've selected the Microsoft Reciprocal License (Ms-RL) as the "primary" open source license to use. Color me completely confused here. You basically want a very free license but you're concerned about commercial use which is almost always allowed unless you're MAME, and having to 'allow re-linking'...
by Mamizou
Thu May 09, 2013 12:50 am
Forum: Tools
Topic: DefleMask - A Multi-System Tracker
Replies: 90
Views: 34645

I'll use it for my new (and first) Genny game. SNES-style music on a Genesis? Uh... why? I swear, the 'chiptune' community is way way too Nintendo centric, and specifically the 2a03 for that matter. There's so much other neat hardware out there you can target and get amazing music out of. And not j...
by Mamizou
Tue May 07, 2013 3:35 am
Forum: Exodus
Topic: So... how does it run on your system?
Replies: 64
Views: 24052

The YM2612 still processes each channel fully, the time division only happens after everything is modulated and the bit depth is truncated. The actual PG/EG parts process each sample and channel individually, but that's different from the output multiplexing because the channels are still outputted ...
by Mamizou
Tue Apr 30, 2013 1:47 am
Forum: Megadrive/Genesis
Topic: Cycle accurate Mega Drive emulation: Exodus coming in April!
Replies: 106
Views: 25829

There will be an advanced operator editing panel for the YM2612 which will give a lot of additional information, including frequency information. It'd be cool if you could use it to generate instrument patches for exporting without a ROM loaded, or just export a patch currently loaded from a game (...
by Mamizou
Sat Apr 27, 2013 6:34 pm
Forum: Tools
Topic: How to extract ADSRV out of a Rom? (SN76489, Master System)
Replies: 5
Views: 2012

The SN76489 is just a simple PSG chip, it has no envelope generator. So no ADSR, mainly just frequency and volume. If it's for the YM2413, I don't know any utilities for dumping patches for that offhand. Your best bet initially is just to open it up with a hex editor and looking for the sound and in...
by Mamizou
Wed Apr 24, 2013 8:02 pm
Forum: Megadrive/Genesis
Topic: Cycle accurate Mega Drive emulation: Exodus coming in April!
Replies: 106
Views: 25829

Quad-core minimum. As for clock speed, the faster the better. My body is ready. I don't think my laptop is though. :O (1.6GHz i7 Q720) ...which involves gathering performance information at runtime, and feeding that performance data back into the compiler to optimize the build. The Firefox ebuild o...
by Mamizou
Tue Apr 23, 2013 7:54 am
Forum: Demos
Topic: YM player for the 32X
Replies: 12
Views: 5251

For 64-bit, you can recompile it or run the 32-bit binary with 32-bit compatibility libraries. When I do './configure' it dies with 'configure: error: 64-bit is currently not supported.' I guess you have actual 64-bit compiling disabled because of the 32-bit asm? Anyway, the demo works in the patch...
by Mamizou
Fri Mar 29, 2013 9:46 pm
Forum: Demos
Topic: Revision 2013
Replies: 5
Views: 2096

Awesome! I'll try to remember to watch. :D
by Mamizou
Thu Mar 28, 2013 8:50 am
Forum: Demos
Topic: Revision 2013
Replies: 5
Views: 2096

All the way in Germany. Too far, not enough money. =[ Sounds like fun though.

Are you going to make another Mega Drive intro?
by Mamizou
Fri Mar 15, 2013 7:43 pm
Forum: Sound
Topic: New Documentation: An authoritative reference on the YM2612
Replies: 859
Views: 377740

So after struggling with Gimp like crazy for most of the day yesterday, I started tracing out the components on my sliced up version of the OPN2 chip die shot. I started with the DAC because the layers there were the clearest. A lot of it is still unclear, and I don't think it'll get better unless t...
by Mamizou
Mon Feb 04, 2013 5:03 pm
Forum: Sound
Topic: New Documentation: An authoritative reference on the YM2612
Replies: 859
Views: 377740

Are the lower 4 bits dropped of the 14bit output or something else happens ? Yeah, they're just dropped. If you look where I have the truncation labelled, you'll see 14 bits coming out of the Sine+EG adder, but 4 of those traces just end. It's too bad they couldn't add a serial output pin so you co...