[libre-riscv-dev] daily kan-ban update 31jul2020

Luke Kenneth Casson Leighton lkcl at lkcl.net
Fri Jul 31 14:53:03 BST 2020




* tracked down XICS unit test bug
* investigated litex libresoc simulation kindly provided by florent
* helped jean-paul with direction on "floorplan" version of layout.
* attended hilarious and informative OpenPOWER Virtual Coffee


* added ref to powerpc-notebook article
* updated https://libre-soc.org/3d_gpu/ "progress" section
* looked again with puzzlement at the litex simulation.

rest of day:

not sure.  the litex simulation is "acting up", not outputting serial
console data (for microwatt or libresoc), is stopping early and not quite

microwatt has branch prediction and a L1 cache so examining the wishbone
reads/writes does not give an accurate picture of what it is actually doing.

i would _like_ to do a cycle accurate comparison of log output and find the
discrepancies however this is really not that easy.

this is going to need some thought.


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

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