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SwarmNSF GBA

From GameBrew

SwarmNSF
Swarmnsf2.png
General
AuthorMic
Last Updated2017/02/07
TypeMedia players
VersionDemo
LicenseMixed
Links
Download
Website
Source

SwarmNSF is a Game Boy Advance NSF player. Instead relying on the DMG/CGB-compatible channels to try to mimic the NES sound processor, this is an all-software implementation running on the ARM CPU.

The player currently supports the 5 built-in sound channels of the NES, and only NSF files with at most 32kB ROM, since none of the ROM banks will move around during playback allows for certain optimizations that otherwise wouldn't have been possible.

User guide

The output of the emulation code is a stream of 8-bit unsigned mono PCM data at 32768 Hz, which is played back using one of the GBA's DMA sound channels.

Bandlimited synthesis is used for the two pulse wave channels to try to eliminate the worst aliasing artifacts.

The first 5 bars show the output levels of the NES audio channels, while the purple-ish bar on the right shows how much of the GBA's CPU time that is consumed by the NES CPU+APU emulation.

Controls

Up/Down - Previous/Next song

Left/Right - Previous/Next sub-song

Media

SwarmNSF - A Gameboy Advance NSF player (xpmck)

SwarmNSF: An NSF player for the Gameboy Advance (Game Boy Advance Homebrew) (RY0G4 _)

External links