[Libre-soc-isa] [Bug 960] OPF ISA External RFC ls003 - maddedu and divmod2du

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=960

--- Comment #20 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Luke Kenneth Casson Leighton from comment #19)

> a similar trick will have to be found for the other operations (using
> sv.subfe)

sigh hit send then realised that the [as-yet-still-being-thought-about]
add/sub-by-taking-carry-from-a-CR-field-and-storing-the-carry-out-in-a-CR-as-well
instruction could likely also help

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