GitHub - Wollw/SynthGBA: An old project. A simple Gameboy Advance sound synth written in assembly. Basically just an interface to direct access to the GameBoy Advance's sound hardware. Allows playing in any key in the second to fifth octaves (with a minor exception in the Cb Maj second octave due to the hardware not being capable of producing the note Cb2).

Wollw / SynthGBA Public

Notifications You must be signed in to change notification settings
Fork 0
Star 4

An old project. A simple Gameboy Advance sound synth written in assembly. Basically just an interface to direct access to the GameBoy Advance's sound hardware. Allows playing in any key in the second to fifth octaves (with a minor exception in the Cb Maj second octave due to the hardware not being capable of producing the note Cb2).

4 stars 0 forks Branches Tags Activity

Star

Notifications

Branches Tags

Name		Name	Last commit message	Last commit date
Latest commit History 7 Commits
data		data
gfx		gfx
src		src
tools		tools
.gitignore		.gitignore
INSTALL		INSTALL
Makefile		Makefile
README		README

Repository files navigation

The key L is the base note of the key's scale (displayed in the bottom left)
As an example here are the keys for Cmaj:
		L 	= C
		Left 	= D
		Down 	= E
		Right 	= F
		Up 	= G
		B 	= A
		A 	= B
		R 	= C (one octave higher than L)



The Setup screen allows you to toggle the bits on
the Length/Wave Duty/Envelope Register.
Changes apply to both channels 1 and 2.

Pressing B on the setup screen enables the use of the Length.
Larger numbers mean shorter time.

For more information on the GBA's sound system check one of these sites:
 * http://nocash.emubase.de/gbatek.htm#gbasoundcontroller
 * http://www.cs.rit.edu/~tjh8300/CowBite/CowBiteSpec.htm#Sound%20Controls


	- David Shere <wolliw@sonic.net>