These 4 bytes will crash your retro PC: The Intel Pentium F00F bug

Most of you probably have heard of the FDIV bug the first Pentium processor suffered from, but have you heard of the F00F bug? The “foof“ bug is an invalid x86 instruction that should have terminated in an exception; however, a combination of “LOCK“ and comparing two CPU register values instead of a register with a memory location, causes CPUs based on the P5 microarchitecture to freeze. In this video, I will show you three methods how you can trigger the “F00F“ bug on your retro system. More details, source and executables: ▬▬▬▬ *Affiliate Links* ▬▬▬▬▬▬▬▬▬▬▬▬▬ Visit my website to find affiliate links to most of the tools and products I use 🔸 Thank you for your support! ▬▬▬▬ *Support Bits und Bolts* ▬▬