Didn’t Windows 95 and 98 have a built in system feature to detect whether the CPU had this issue? I believe it would disable the FDIV instruction and emulate it in software instead on affected processors. What I’m not sure of is whether it only disabled the FDIV instruction or whether it disabled the entire FPU…?

Thankfully and luckily I never had an original Pentium affected by this issue.

Had one of these CPUs. At least it didn’t Halt and Catch Fire ;)

See also F00F