Timothy Normand Miller wrote: > Well, that's not a bad idea. It's also worth pondering architectures > that have 512 local registers, unifying the scratch space with the > register file. But that may be too radical. > This is pretty common in micro controllers. In the 8 bit AVR series, there are 32 registers that are the low 32 bytes of the memory space. Same goes for the 8051 series, though the 8051 also supports a completely separate external memory space as well. Personally, I think make perfect sense to not distinguish between the register set, scratch memory, and I/O space. It reduces the number of instruction types, reduces the amount of decode logic, etc.
While we obvious want to make the controller as easily programmable as possible, efficiency in execution and efficiency in implementation take precedence in my mind. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
