[Libre-soc-dev] status update pack/unpack, india edu conference, spec clarification

Luke Kenneth Casson Leighton lkcl at lkcl.net
Sun Aug 21 21:28:01 BST 2022

a quick update, i have the india educational workshop this
entire week, still have to do the presentation (!) and
finish setting up the student access to 5 Arty A7s at UOregon

i still haven't been able to do Pack/Unpack in ISACaller, too
much else going on although the spec looks good now.  PU has
been through the wringer, started as mv.x, then an EXTRA. PU is
now a Mode (like saturate) but the complication is that it
had to be individually added to LDST (both types, Immed and Idx)
and Arithmetic and CRops.  an additional complication:
only Arithmetic had room for dual Saturate-PU where LDST did

Also along the way, last week i had to scramble to remove
LDST-with-shift, which prompted me to do more readthru of
LDST which resulted in clarification and error checking.
this has surprisingly taken several days.

One nice side-effect of the binutils upstream patches is that
someone has kindly been reading the spec, starting with the
setvl page. i pointed them this way.

with RED Semi being an OPF Member now it becomes possible
to help with the review and processing on the other side
of the fence. I will ensure that the right questions are sent
out for answering here: i will *NOT* be providing answers
*inside* the Confidential realm of the OPF ISA WG.

of course that means that firstly the External RFCs have to
be written and that's what the new NLnet Grant application is


crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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