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furnace/doc/7-systems/nds.md
Electric Keet d4364a1b74 Many doc updates. 
Settings changes, interface niceties, and a ton of info about sample limits.
2025-09-30 04:50:22 -05:00

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Nintendo DS

this portable video game console succeeded the Game Boy Advance. it has 16 channels of sampled sound, supporting 8-bit PCM, 16-bit PCM and IMA ADPCM.

additionally, the last 8 channels may be put in "PSG mode", featuring 6 channels of pulse with 8 duty cycles and 2 noise channels.

effects

  • 12xy: set duty cycle.
    • 0 to 7.
    • only works in PSG channels.
  • 1Fxx: set global volume.

info

this chip uses the Nintendo DS instrument editor.

sample length, loop start, and loop end are 32-bit word aligned, meaning they must be divisible evenly by the alignments shown in the table below:

sample type sample length max loop start max alignment
16-bit PCM 8388606 131070 2 samples
8-bit PCM 16777212 262140 4 samples
IMA ADPCM 33554424 524280 8 samples

chip config

the following options are available in the Chip Manager window:

  • Model: set the amount of memory available for samples.