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[ih] Deep dive into the C/30 microcode
On Thu, Apr 2, 2020 at 11:07 AM Steve Crocker via Internet-history <
internet-history at elists.isoc.org> wrote:
> One of the more droll discrepancies were the implementations of the Set
> Overflow Bit and Reset Overflow Bit instructions. We found their
> implementations were reversed. However, when we consulted with BBN, they
> said they had found the error but instead of changing the microcode, they
> changed the output of the assembler.
i.e. they fixed it in software.?