ctra[1] := x compiles, but ...

Phil Pilgrim (PhiPi)

... it doesn't set ctrb or seem to do anything else for that matter. Bummer. I was hoping to write a universal counter setup method that would work for both counters.

(I wonder why it even compiles.)

-Phil

kuroneko

Phil Pilgrim (PhiPi) wrote: »

(I wonder why it even compiles.)

For the same reason that outa[1] := x does? You could use spr[8 + a_b] := x though.

Phil Pilgrim (PhiPi)

kuroneko wrote:

For the same reason that outa[1] := x does?

Ugh, yeah, I suppose. I never really liked the idea of overloading subscript notation for selecting bits in the first place. It would have been better to come up with a unique syntax that works equally on hub variables and sprs alike.

-Phil

Phil Pilgrim (PhiPi)

Of course, the spr thing works. But, for bit access, would it have been so terribly wrong to require something like:

<register or variable>.bit(<bitrange>)

Or, better:

<register or variable>.(<bitrange>) or
<register or variable>.<bit>

I love Spin, but sometimes the logic of its syntax escapes me. I've got half a mind to write a Spin++ compiler...

-Phil