[Libre-soc-bugs] [Bug 523] New: demo program needed showing register dependencies

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Tue Oct 27 21:35:33 GMT 2020


            Bug ID: 523
           Summary: demo program needed showing register dependencies
           Product: Libre-SOC's first SoC
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: CONFIRMED
          Severity: enhancement
          Priority: ---
         Component: Documentation
          Assignee: lkcl at lkcl.net
          Reporter: lkcl at lkcl.net
                CC: libre-soc-bugs at lists.libre-soc.org
   NLnet milestone: ---

a (small! python) program is needed which generates the 6600 table(s) here:

this to be implemented not as an actual simulator but as tracking dependency
hazards between registers.

to include - as options:

* ability to change number of read and write ports (op forwarding to be one
  extra write rather than special-cased)
* to treat CTR as being in a completely separate regfile as INT regs
* to be able to specify the completion length of the arithmetic part of
* to be able to specify the "pre" phases which default to fetch, decode
  but can be extended to e.g. fetch, decode1, decode2

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