> My first Ada project was using it as a PDL for micro code for a bit > slice computer. For those of you who don't know about them, back in the > old TTL logic days before CMOS was king. Many vendors made the basic > math unit and register sets in 4 bit slices. If you wanted a 16 bit > computer you used 4 of them. If you wanted a 32 bit computer you used > 8. And so on. This use of Ada was very successful because it allowed > very good definition of the data though the use of rep specs. So the > hardware people loved it. The software people liked it because it allow > us to abstract away those details. Isn't this sort of thing part of what VHDL is about?