Emulator Debugging: Area 5150's Lake Effect

My last few articles on bus sniffing the IBM 5150 have been building up to this one. We're going to leverage our bus sniffer and sniffer decoder to finally debug Area5150's "Lake" effect. "But wait -", you might be asking: "- doesn't MartyPC run Area5150 already?" Yes, it does, but I have a dirty little secret I need to confess to the world. Despite all the accolades MartyPC has received about…