[ih] Deep dive into the C/30 microcode

• Subject: [ih] Deep dive into the C/30 microcode
• From: clemc at ccc.com (Clem Cole)
• Date: Thu, 2 Apr 2020 14:59:01 -0400
• In-reply-to: <[email protected]om>
• References: <[email protected]> <[email protected]om>

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.?

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