etc/furnace
0
0
Fork 0
mirror of https://github.com/tildearrow/furnace.git synced 2024-11-30 08:23:01 +00:00
Code Issues Projects Releases Packages Wiki Activity

add MMC5 documentation

Browse source
This commit is contained in:
tildearrow 2022-04-06 00:45:26 -05:00
parent 5de58e1f6d
commit 91738dbf23
1 changed files with 12 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
papers/doc/7-systems/mmc5.md Normal file
View file

@ -0,0 +1,12 @@
# Nintendo MMC5
a mapper chip which made NES cartridges exceeding 1MB possible.
it has two pulse channels which are very similar to the ones found in the NES, but lacking the sweep unit.
additionally, it offers an 8-bit DAC which can be used to play samples. only one game is known to use it, though.
# effects
- `12xx`: set duty cycle or noise mode of channel.
- may be 0-3 for the pulse channels and 0-1 for the noise channel.