Re: Creating several types from a base type and conversion

[Ken Roberts <alisonken1@gmail.com>]

After some more reflection (nice thing about having a boring job), I think I've been overthinking the problem.

The registers do not need to be a subtype of Unsigned_32 (or Word30), since they're going to be containers rather than actual variables. As long as the __data__ they get/return is a subtype of Unsigned_32, the conversion is automatic (from my understanding).

So, for what I'm looking at, I_Word[1-2] is only used by one register (the Instruction register), so they can be worked on using private variables; once the instruction is loaded into the register, the upper half is pretty much read-only with the lower half being the only part that _may_ be returned. The other registers pretty much just use Unsigned_30 as is. For the ones that use half-word (15-bit) parts, easy enough to work with as well since they'll be using subtypes of Unsigned_30.

Goes to show what happens when you over-think the problem.

Thanks for all of your suggestions and help.