this rom ever get released?

Woohoo. So each drum can use more than one channel?

Well I guess "layered" is multi channel..

can we just make this with all of trey frey's drum sounds please

Might be straying away from what you want but it'd be really cool to have a little step sequencer in it to use as a dedicated drum machine and controlling different patterns and stuff on the fly too.  Potential sync with LSDJ or Nano?

My goal was not so much h to pull a synthcart but to  ramble ideas. Call me a thread stealer.:P
I understand though; no mbc for simplicity. I can see you getting a load of hard coded sounds in there since you're only going to bother with the button and sound interrupts and registers. Samples though would be a little more difficult to get into the 32k...

SRAM: It's a possibility, but I think the use for that would be marginal. I think people generally have a way of flashing ROMs normally onto their cartridges. Maybe for use with non-EMS cartridges (ie catridges that lack native multi-ROM support) but that's not a priority, I guess. One use for this could be to allow the user to remove the cartridge while the program is still running in the Gameboy's RAM. In theory that's a good idea. In practice, only GBC can do that without immediately crashing.

Channels, any of them, as used by the patches. How many sounds, as many as possible.

Which channels are you interested in using again, all four? And how many sounds were you thinking of programming?

Oh. Very nice.
Wild idea but what would it take to get that from under 8k? I am tearing into a few Sega genesis carts that utilize serial sram and I wonder if its possible to load he rom onto the GB internal ram and run from there.

I want to fit into a 32 kB so it can fit on a cheapo ROM only cartridge. That doesn't strictly rule out sampled drums, but the space would be limited.

Any reason why you wish to use only generated sounds?

YES

Can't wait to try it

I want the focus of the program to be live playability, so probably only controllable through the buttons. Full disclosure, I'm even hoping to sell this as a cartridge in the future (as well as being a free download.) As for submissions, as long as I can reproduce the sound, it doesn't really matter. I'm expecting a lot of these patches to be layered across channels and maybe using channel 3, so sav/lsdsng might be easier.

How will one control this software? Will it have midi?

I have a couple drums that I think are actually maybe good (it got the approval of a couple biggish famitracker and amiga mod names at least). I'll hit you up.