assembly - Where is an ISA stored and how exactly is it taken into account? -

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i'm studying makes computer computer

so far understood have

high-level programming language ->

-> compiled low level programming language (assembly language) ->

-> assembler uses send instructions directly cpu using machine code

the instructions must obey corresponding cpu architecture isa (instruction set architecture) cpu uses.

and cpu reads/writes data registry or hdd (or sdd, etc.) through various channels.

the articles i've read far fail mention following 2 (key, pov) aspects of journey instruction makes:

  1. where isa stored? in component of whole system?
  2. and how cpu take account? along journey? "ask" explicitly isa (somehow) if instruction received valid?

a simple description university of virginia :).

http://www.cs.virginia.edu/~cs333/notes/cs333_class3.pdf

an other 1 use full

http://www.ece.utep.edu/courses/web3376/notes_files/ee3376-isa.pdf

if need more let me known ;)


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