There's a decent chance you're younger than me, but I can still read it. Coincidentally about 20 years ago I got asked to fix a bug in some PDP11 code that ran on real hardware because it was tripping up an emulated system. Nothing wrong with the emulator as such, it was just a logic bug in the program that they no longer wanted to work around.
I made the fateful mistake of saying "Sure, sounds fun, how hard could it possibly be...?"
Not pdp-11 but once I was tasked with fixing a c program the offshore team had failed to fix for over a year. I basically took a month off (at my desk) after I fixed it the first day. They were happy, I was a legend at that company!
The FPGA emulator we made had to pass the xxdp test suite which was provided to me on punched tape and microfiche. The emulator had a specific test for FDIV overflow which even tested the accuracy of the partial result. None of the software emulators I tested did this. I emailed Gordon Bell who introduced me to Bob Supnkk, and we found the original flowcharts for it so I could replicate the divider logic precisely. Imagine a nuclear reactor dependent on this lol.
I made the fateful mistake of saying "Sure, sounds fun, how hard could it possibly be...?"