1.2.4 add modes

Question 1

what does addressing modes allow

Answer 1

for a much greater number of locations for data to be stored

Question 2

WHAT DOES adressing mode do

Answer 2

specifies how the operand should be interpreted

Question 3

4 adressing modes

Answer 3

direct addressing
imediate addressing
indirect addressing
indexed addressing

Question 4

whats direct addressing

Answer 4

The operand gives the address which holds the value upon which the
instruction is to be performed. Direct addressing is used in LMC.

Question 5

what is imiediete addressing

Answer 5

The operand is the actual value upon which the instruction is to be
performed, represented in binary,

Question 6

what is indirect addressing

Answer 6

The operand gives the address of a register which holds another address,
where the data is located.

Question 7

what is indexed addressing

Answer 7

An index register is used, which stores a certain value. The address of the
operand is determined by adding the operand to the index register . useful for arrays