[Libre-soc-bugs] [Bug 604] ISACaller simulator needs RADIX MMU support

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=604

--- Comment #48 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
double-check: 

       pgtable_addr := x"00" & r.pgbase(55 downto 19) &
                        ((r.pgbase(18 downto 3) and not mask) or (addrsh and
mask)) &
                        "000";

*  55 downto 19 in LSB0 order
*  55-55 to 55-19 in MSB0 order
*  0 to 36 in MSB0
*  0 to 37 in python "end+1"

*  18 downto 3 in LSB0 order
*  55-18 downto 55-3 in MSB0 
*  37 to 52 in MSB0
*  37 to 53 in python "end+1"

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