[Libre-soc-dev] daily kan-ban update 28apr2022

[Jacob Lifshay]

On Thu, Apr 28, 2022 at 11:26 PM Jacob Lifshay <programmerjake at gmail.com> wrote:
>
> Well, I got the HDL for goldschmidt division to work -- it probably
> needs to be a FSM since the full combinatorial 128/64->64 div/mod
> circuit gives 700k cells from yosys synth:

turns out I got the required error bounds waay too precise:
https://git.libre-soc.org/?p=soc.git;a=commitdiff;h=fd260a6435576b24cff4f3794621c0333976d98e

correcting that gives 220k cells:
   Number of cells:             219670
     $_ANDNOT_                   61290
     $_AND_                       4518
     $_MUX_                       2453
     $_NAND_                       250
     $_NOR_                      39071
     $_NOT_                       9139
     $_ORNOT_                     8034
     $_OR_                       25843
     $_XNOR_                     25081
     $_XOR_                      43991

Jacob