[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 #33 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
 440         # mbits := unsigned('0' & data(4 downto 0));
 441         mbits = selectconcat(SelectableInt(0,1), data[58:63])
 442         assert(mbits.bits==6) #variable mbits : unsigned(5 downto 0);

this is incorrect.  the conversion is as follows:

* x downto y converts to 63-x downto 63-y
* 4 downto 0 is therefore 59 downto 63

however python lists are to the end plus 1

therefore 5 downto 0 is data[59:64]

NOT

58:63

-- 
You are receiving this mail because:
You are on the CC list for the bug.