[Libre-soc-dev] daily kan-ban update 07sep2020

[Luke Kenneth Casson Leighton]

tasks:

* https://bugs.libre-soc.org/showdependencytree.cgi?maxdepth=1&id=383&hide_resolved=1

yesterday:

* got dec and tb added and tested
* started reorganising PowerDecode to add both row and column subsetting

today:

* bit more on dcache.py (got through it - needs careful review)
* started reorganising PowerDecode2

the reason for the reorg on PowerDecode2 - to be able to "subset" it -
is because when doing a full global decoder it produces a MASSIVE
fan-out of signals, from the original 32 bits, out to a whopping 192
wires to some Function Units *excluding the register data*.

by passing the instruction and partial-decoding the operation again
the number of wires can be drastically reduced.

l.

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