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Defects in historical software and hardware, their causes, questions about well-known bugs. Use [debugging] for bug diagnosis and discovery.

14 votes
Accepted

What is the CoCo "Head Banger bug" and what is the "fix"?

I posted this question because I had those thoughts, and then spent ages going through multiple dead ends until I finally found it (my Google-fu is on the fritz). So that I don't have to go through th …
John Burger's user avatar
  • 1,365
15 votes
1 answer
1k views

What is the CoCo "Head Banger bug" and what is the "fix"?

I remember that horrible racket coming from the floppy disk when I first used it after started my CoCo, and that it was called the "Head Banger bug". I remember that it was due to a quick-n-nasty bit …
John Burger's user avatar
  • 1,365
24 votes

Why did Pokémon Red have so many overflow bugs?

I cannot speak about Pokémon in particular, but as a programmer for ~30 years, I'll answer thus: either laziness, incorrect assumption, or surprise. Laziness After an operation that overflows, you n …
John Burger's user avatar
  • 1,365