Large Scale VHDL techniques
- by oxinabox.ucc.asn.au
I'm thinking about implimenting a 16 bit CPU in VHDL.
A simplish CPU.
ADD, MULS, NEG, BitShift, JUMP, Relitive Jump, BREQ, Relitive BREQ, i don't know somethign along these lines
Probably all only working with 16bit operands.
I might even cut it down and use only a single operand and a accumulator.
With Some status regitsters, Carry, Zero, Neg (unless i use a Accumlator),
I know how to design all the parts from logic gates, and plan to build them up from first priciples,
So for my ALU I'll need to 'build' a ADDer, proably a Carry Look ahead, group adder,
this adder it self is make up oa a couple of parts, wich are themselves made up of a couple of parts.
Anyway, my problem is not the CPU design, or the VHDL (i know the language, more or less).
It's how i should keep things organised.
How should I use packages,
How should I name my processes and port maps? (i've never seen the benifit of naming the port maps, or processes)
