Bug 357

Summary: create simplified (testing) version of Function Unit pipeline for test purposes
Product: Libre-SOC's first SoC Reporter: Luke Kenneth Casson Leighton <lkcl>
Component: Source CodeAssignee: Luke Kenneth Casson Leighton <lkcl>
Status: RESOLVED FIXED    
Severity: enhancement CC: libre-soc-bugs
Priority: ---    
Version: unspecified   
Hardware: PC   
OS: Linux   
NLnet milestone: --- total budget (EUR) for completion of task and all subtasks: 0
budget (EUR) for this task, excluding subtasks' budget: 0 parent task for budget allocation:
child tasks for budget allocation: The table of payments (in EUR) for this task; TOML format:

Description Luke Kenneth Casson Leighton 2020-05-29 14:49:04 BST 
a simplified version of a Function Unit pipeline is needed which has
the same functionality as soc.experiment.alu_hier.ALU but has the
soc.fu front-end API (including regspec compliance).

take this code (particularly main_stage.py):
https://git.libre-soc.org/?p=soc.git;a=tree;f=src/soc/fu/alu;hb=HEAD

and cut it *right* back so that it has the same functionality as this:
https://git.libre-soc.org/?p=soc.git;a=blob;f=src/soc/experiment/alu_hier.py;h=bebe6468cc78975e0e98794fe8d5f72321eb0d50;hb=HEAD#l195

but without the mess of the actual ALU side being mixed in with
the pipeline handling.