yazaldefilimone / nes.rs

A Nintendo Entertainment System :(

Nintendo System

A Nintendo Entertainment System (NES) emulator written in Rust.

Architecture (distributed system)

+--------+     +--------+     +--------+     +--------+     +--------+     +--------+
|  CPU   |<--> |  BUS   |<--> | ROM    |<--> |  PPU   |<--> | GamePad|<--> |  APU   |
+--------+     +--------+     +--------+     +--------+     +--------+     +--------+
                                  |              |              |
                                  v              v              v
                              +-------+     +--------+      +--------+
                              | Logic |     | Render |      | Scroll |
                              +-------+     +--------+      +--------+

Features

• CPU
• RAM
• PPU
• APU

TODO

• CPU
  • Load Accumulator
  • Store Accumulator
  • Add with Accumulator
  • Subtract with Accumulator
  • AND with Accumulator
  • OR with Accumulator
  • XOR with Accumulator
  • Compare Accumulator
  • Shift Left
  • Shift Right
  • Rotate Left
  • Rotate Right
  • Jump
  • Jump Subroutine
  • Return from Subroutine
  • Call Subroutine
  • Return from Interrupt
  • Restart
  • Interrupt
• PPU
  • VRAM
    • Read
    • Write
    • Scroll
    • Sprite
      • Read
      • Write
      • Sprite Collision
      • Sprite Overflow
  • CGRAM
    • Read
    • Write
  • OAM
    • Read
    • Write
    • Sprite Collision
    • Sprite Overflow
• APU

Links

• https://www.nesdev.org/obelisk-6502-guide/reference.html