> Looking over thread, definitely some good examples. I had thought there was some > protocol to have any roms with fixed/adjusted bits to be given some // fixed bits > comment description.
"fixed bits" in terms of romcmp means that every byte in the file has that bit set (or clear?) i.e. it's fixed at a certain value. It doesn't mean it has been "fixed". It usually indicates that it was badly dumped, but in the case of the outrun sample rom then it was badly manufactured.
People might pull that over into the mame source to remind themselves or others that the dump is bad/questionable/nothing to worry about.
A single bit caused by bitrot won't ever be detected and once it's been (let's say) "repaired" then a comment is largely irrelevant. I would have thought it would be marked as "ROM NEEDS REDUMP" as there is no guarantee that only one bit was wrong.
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