A-level Computing/AQA/Paper 2/Fundamentals of computer organisation and architecture/Addressing modes

From Wikibooks, open books for an open world
Jump to navigation Jump to search

There are many different addressing modes which can be used. However, in the AQA A-level there are only two that need to be known - Direct and Immediate.

Immediate Addressing[edit]

Immediate addressing is where the value is passed directly as the operand. In AQA assembly this is shown using the # symbol.

Direct Addressing[edit]

Direct addressing is where the the address at which the value is stored is the operand.