I think the proper term for the bug is "race condition", since it is triggered by timing I first encountered this type of bug back in Z80 days. The fastest pos

I think the proper term for the bug is "race condition", since it is triggered by timing I first encountered this type of bug back in Z80 days. The fastest possible way to copy memory was using an unrolled sequence of POP/PUSH on the stack; however, if you forgot to disable interrupts while doing this, the data could be corrupted.