[Libre-soc-dev] daily kan-ban update 06mar22

[lkcl]

yesterday was exhausted and in pain so did not do much.  investigated nmigen_soc arbiter and decoder which lacks examples and adequate documentation. 

also worked with jacob to explain twin-GF2-mul-add, part of Cooley-Tukey for Number Theory Transform (GF equivalent of Discrete Fourier Transform)

today edited the bitmanip page and added this
https://git.libre-soc.org/?p=libreriscv.git;a=blob;f=openpower/sv/gf2.py;hb=HEAD

it contains two key functions, GFMUL and GFDIVMOD which for the few values tested so far seem to work.
gf_invert on the other hand does not, there is something wrong with it.

l.