<mcc111[m]> "So… I want to shift a signal..." <- > <@mcc111:matrix.org> So… I want to shift a signal right one, but I want to fill the leftmost bit with 1s
> I think i can get this by playing with signs, but I also want to do arithmetic on this without getting signed behavior (I'm not sure when that would come up, but if it comes up, I don't want it)
> if I do
> ```
> m.d.sync += [
>     x.eq(x.shift_right(1)),
>     x[most_significant_bit].eq(1)
> ]
> ```
> Do I get what I want?

maybe you can just do `m.d.sync += x.eq(Cat(x[1:], 1))`