# List of abbreviations

- MSB (most significant bit)
- LSB (least significant bit)
- DMA (direct memory access)
- LUT (lookup table)
- RAM (random access memory)
- PPU (picture processing unit)
  - NES (Nintendo entertainment system)
    - OAM (object attribute memory)
  - TMM (tilemap memory)
  - BAM (background attribute memory)
  - FAM (foreground attribute memory)
  - PAL (palette memory)
  - AUX (auxiliary memory)
  - HUD (heads-up display)
- APU (audio processing unit)
  - PWM (pulse width modulation)
  - ADSR (attack, decay, sustain, release)
- CPU (central processing unit)