[Libre-soc-dev] compressed instructions state requirements

[Luke Kenneth Casson Leighton]

On 11/26/20, Jacob Lifshay <programmerjake at gmail.com> wrote:
> On Wed, Nov 25, 2020, 15:32 Luke Kenneth Casson Leighton <lkcl at lkcl.net>
> wrote:
>
>> give it 30-40 minutes to complete upload and processing...
>> https://youtu.be/LdAIOew63Bs
>
>
> Watched it, it looks like a correct description of Standard Mode :)

the realisation hit me that actually, what you do is, simply use PC[1]
as the lookup of where to find EXTNNN, but from the right, not the
left:

    ext_idx_lookup_byte = 3-PC[1]*2

48bit is the only spectacular weirdness and luckily we're in charge of
defining that.

frankly i'm.astounded it works :)

l.