[libre-riscv-dev] [Bug 336] ALU CompUnit needs to recognise that RA (src1) can be zero

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Mon Jun 1 12:55:04 BST 2020


--- Comment #43 from Cesar Strauss <cestrauss at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #42)
> rdmask disables (entirely disables) bits of rd.rel, and consequently
> rd.go *should* never be raised.  rd.rel being the output (which is
> masked out), rd.go being the input, it's a "protocol violation" if
> raised.

So rdmask, as an input, must be driven and held high, for all the time that
busy_o is active?

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