storage architecture

Complete

Summary

Operations using different architectures
storage_architectures.png

C = A + B

StackAccumulatorRegister-registerMemory-memory
push A
push B
add
pop C		load A
add B
store C		load r1, A
load r2, B
add r3, r1, r2
store C, r3		add C, A, B

Concept

Storage architecture

  • where are the operands stored so that we can perform operations on them?
  • where is the result stored afterwards?
  • how to specify the operands

Common storage architectures

  • Stack architecture
    • operands are implicitly at the top of the stack
  • Accumulator architecture
    • one operand is implicitly in the accumulater(special register)
  • General-purpose register architecture
    • explicit operands
    • Register-memory architecture
      • operands in memory and registers
    • Register-register
      • operands in registers only
  • Memory-memory
    • operands in memory only