Feature Proposal: allowing latches about spinalhdl HOT 4 CLOSED

Hi,

So until now, the idea was "If you want latches, you have to instanciate them through blackboxes"

But now it could be possible to integrate the feature in reworkDev branch, be before trying it, i would like to release the reworkDev branch into the master one, see if everything is fine, get some feedbacks, and later adding new feature of this order (latches).

Until that time, is the blaboxing way enough ?
Maybe those blackboxes could be integrated into devRework, and be instanciated via a wrapper. Then when the feature is nativly supported it would not need any changes in the user code base.

from spinalhdl.

Sure, latches are not so essential and blackboxing is OK.
Future/long term feature is totally fine.

from spinalhdl.

For the design I think a Latch(T) would feel more natural (like Reg(T)). With LatchWhen(...), etc.

So your example would be:

val d = Bool
val e = Bool
val l = Latch(Bool)
when (e) {
    l := d
}

Or

val d = Bool
val e = Bool
val l = LatchWhen(d, e)

from spinalhdl.

Yes, Latch(T) seems more natural. That maybe just some makeup which would add addTag(noLatchCheck) under the hood

from spinalhdl.