[Libre-soc-dev] daily kan-ban update 23mar2021

[Luke Kenneth Casson Leighton]

On Tuesday, March 23, 2021, Tobias Platen <libre-soc at platen-software.de>
wrote:


> -- Shift address bits 61--12 right by 0--47 bits and
> -- supply the least significant 16 bits of the result.


https://git.libre-soc.org/?p=soc.git;a=commitdiff;h=HEAD

blegh :)

these microwatt functions are awful.  they are heavily optimised for Xilinx
FPGA toolchains (which are s***) to specifically target Xilinx LUT6 FPGAs.

we should not in any way try to replicate or use them.

just replace with shift and mask.

x = addr >> shift
return x[0:16] # but convert to MSB0



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