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

[Tobias Platen]

On Tue, 23 Mar 2021 20:36:26 +0000
Luke Kenneth Casson Leighton <lkcl at lkcl.net> wrote:

> 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
I'm going to fix that now.
> 
> 
> -- 
> ---
> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
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-- 
Tobias Platen <libre-soc[at]platen-software[dot]de>