clifford changed the topic of #yosys to: Yosys Open SYnthesis Suite: http://www.clifford.at/yosys/ -- Channel Logs: https://irclog.whitequark.org/yosys
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<cr1901_modern> Not that you're asking for input, but AIUI VIPT is the way to do for a simple MMU
<cr1901_modern> go*
* ZipCPU googles VIPT
<cr1901_modern> Virtually-Indexed Physically Tagged
<ZipCPU> Fascinating topic
<cr1901_modern> it allows latency hiding because cache access happens in parallel with MMU decoding
<cr1901_modern> there is a potential problem with aliasing though
<ZipCPU> I've thought of doing something similar, but its a data movement issue for me. I need to figure out how to get MMU data into the cache. (The two are separate in my current implementation.)
<cr1901_modern> what is "aliasing"? I don't remember, I just know it's bad. :)
<ZipCPU> Getting the physical tag in there isn't so hard, checking against the current physical tag is going to be harder.
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<cr1901_modern> ZipCPU: I don't think your impl excludes VIPT; the MMU _is_ physically separate in VIPT.
<ZipCPU> If that's the case, I might need to dig into it some more.
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