[Libre-soc-isa] [Bug 535] setvl/setvli encoding & future reg file expansion

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Tue Dec 1 15:38:27 GMT 2020


--- Comment #3 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
nuts.  with the need for both RA and RT the number of bits required is
increased by 5.  that needs to do the crops trick of taking up 5 bits of

so that'd be an entire column of 32 (XO[0:4]) for use as other fields,
whilst XO[5:9] would be a constant (selecting one of the columns, if
you look at v3.0B p1156 Table 20 Book III Appendix C)

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