lectures.alex.balgavy.eu

Lecture notes from university.
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Instruction Set Architecture.md (976B)

      1 +++
      2 title = 'Instruction Set Architecture'
      3 +++
      4 How to program a computer:
      5 1. Create model for programmable digital computer
      6 2. Specify programming interface for each computer
      7 
      8 3. Specify a generic programming language that works for all computers (software)
      9 
     10 4. Design digital computers that match specific/general interface (hardware)
     11 
     12 5. Design software engineering techniques to simplify and optimise coding (software stack)
     13 
     14 A platform (simplified) is a set of technologies common to many applications.
     15 ISA: list of instructions a computer can perform, grouped by type
     16 
     17 Von Neumann Architecture — memory connects to CPU. CPU receives input and sends output.
     18 
     19 CPU contains registers, arithmetic and logic unit, control unit.
     20 
     21 How to compare ISA:
     22 1. Complexity of what the ISA can do (flexibility)
     23 2. Complexity for programmer (programmability)
     24 3. Complexity for the hardware (implementation cost)
     25 
     26 Memory structure:
     27 
     28 - 1 byte is 8 bits
     29 - 1 word is 32 bits (4 bytes)- [ ]