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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.arch
Subject: Re: is Vax addressing sane today
Date: Tue, 24 Sep 2024 00:37:25 -0000 (UTC)
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On Mon, 23 Sep 2024 22:17:02 +0000, MitchAlsup1 wrote:

> You argue that trap-on-overflow as an instruction is unnecessary
> AND
> You argue that overflow detection is worthwhile
> AND
> You argue that ALU should not raise overflow exceptions
> 
> I am at a loss for how to take all 3 arguments together at the same time
> !?! Can you explain ??

The answer is pretty obvious: explicit instruction to branch on overflow 
detection.