$pseudo_op rv_i::add ntl.p1   31..25=0 24..20=2 19..15=0 14..12=0 11..7=0 6..2=0x0C 1..0=3
$pseudo_op rv_i::add ntl.pall 31..25=0 24..20=3 19..15=0 14..12=0 11..7=0 6..2=0x0C 1..0=3
$pseudo_op rv_i::add ntl.s1   31..25=0 24..20=4 19..15=0 14..12=0 11..7=0 6..2=0x0C 1..0=3
$pseudo_op rv_i::add ntl.all  31..25=0 24..20=5 19..15=0 14..12=0 11..7=0 6..2=0x0C 1..0=3