[libre-riscv-dev] POWER simulator

Luke Kenneth Casson Leighton lkcl at lkcl.net
Wed Apr 1 18:43:52 BST 2020


On Wed, Apr 1, 2020 at 6:05 PM Immanuel, Yehowshua U
<yimmanuel3 at gatech.edu> wrote:
>
> I’m guessing this is in reference to parsing the PDF?

yep.  https://libre-riscv.org/openpower/isa/

> As in - what we should expect labor-wise?

took about 5 hours but there's now information missing, i cut too much out.

the  parser took about a day to get into shape.

putting in the decoder and a prototype regfile, another day.

first succesful instruction was today.

estimated... maybe... 3-4 more days and we should have the complete
set of integer instructions done.  not speed-optimised at all.

quirks such as what various SPRs mean and do, maybe another 2-3 days.

l.



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