ghdl compilation of VST files, bit numbering is inverted (5 to 6) and probably truncated
../vst_src/dec_138.vst:394:69: direction of the range mismatch
../vst_src/dec_138.vst:392:40: can't associate indexed name with signal interface "cr_dec19_function_unit"
../vst_src/dec_138.vst:392:40: (type of indexed name is bit)
../vst_src/dec_138.vst:95:12: (type of signal interface "cr_dec19_function_unit" is a subtype of bit_vector)
this should be 7 bits, however by the time it gets to dec_138.vst it's 2 bits and is "5 to 6" not "6 downto 5". i have no idea if that is yosys.