[Libre-soc-bugs] [Bug 502] determine SRAM block size and implement it

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=502

--- Comment #10 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Luke Kenneth Casson Leighton from comment #9)

> with a small example that shows both, we will know if there are any
> surprises.

afterthought / clarity : adding both the 512 byte DFF Memory and the 4k
SRAM Memory to the same worked example will have the advantage of showing
if there are any problems getting yosys to support / understand both.

if the standard way of doing Memory in yosys is taken with the DFF Memory,
how is the SRAM supposed to fit?

if the standard way of doing Memory in yosys is taken with the SRAM Memory,
how is the DFF version supposed to fit?

i have absolutely no idea how to answer these questions although if nobody
else knows either i can help work them out.

(and, of course, in a small example, iteration and discovery of those answers
will take minutes to compile rather than 90 minutes as it does in ls180)

also JP it will be a good place to show how the DFF SRAM manual layout works?

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