At one point, the company I was working for, had the errata for a high performance embedded CPU from a startup. The errata alone - printed as a manual - was big

At one point, the company I was working for, had the errata for a high performance embedded CPU from a startup. The errata alone - printed as a manual - was bigger than the entire Intel manual stack for the dual core chip we were dealing with at the time including the errata. It was really educational.