Enhancement Chips: How Nintendo Cartridges Leveled Up

• Presented at Sac Gamers Expo 2025
• Presented at SoCal Gaming Expo 2026

Building

• Simply run make
  • Requires make, ca65, and ld65 to be included in your PATH.
• Alternatively, run rebuild.bat on Windows or rebuild.sh on MacOS and Linux.
  • Requires ca65 and ld65 to be included in your PATH.

File Summary

• launchpad.s
  • Complete source code in 6502 assembly.
• data.inc
  • Complete read-only data including colors, initial sprite state, and CHR-ROM tiles.
• system.inc
  • Canonical names for NES registers and sprite OAM data layout.
• *.cfg
  • Linker configurations for a basic NES NROM, MMC1, MMC2, MMC3, and MMC5 rom file.
• *.nes
  • Prebuilt rom files.