NESE - An NES emulator

How to use

nese [path-to-ines-file]

Pre-built binaries

• Go to Action > Build and Upload Artifacts > Artifacts

Things that worked

• CPU (No invalid op codes)
• PPU (Sprite and Background rendering)
• Control
• CHR Ram (even on mapper 0)
• Saves

Things that not worked

• iNes 2.0
• Super mario brothers (IDK why) (CMP set flags fault)
• Tetris (BG not render while playing) (forgot to implement single screen mirroring)
• Audio (I got no idea how audio work)

Default Control

Debug feature

Button	Feature
F2	Play & Pause the emulator
F3	Step frame
F4	Print PPU debug info to console
F5	Enable logging (slow the emulator down dramatically)
F6	Draw 2 pattern table on screen
F7	Fast forward

Player 1

Key	Button
A	Space
B	LShift
Select	LCtrl
Start	E
Up	W
Down	S
Left	A
Right	D

Player 2

Key	Button
A	J
B	K
Select	L
Start	/
Up	↑
Down	↓
Left	→
Right	←

Currently supported mappers

• Mapper 0
• Mapper 1
• Mapper 2
• Mapper 3
• Mapper 4 (Very buggy, idk why)

How to build

This project used zig 0.12.0

References

• OLC NES: https://github.com/OneLoneCoder/olcNES
• NesDev wiki: https://www.nesdev.org