Question

A two word instruction is stored in memory at an address designated by the symbol W. The address
field of the instruction is (stored in W+1) is designated by symbol Y. The operand used during the
execution of the instruction is stored at an address symbolized by Z. An index register contain the value
of X . State how Z is calculated from other addresses if the addressing mode of the instruction is
i. Direct
ii. Indirect
iii. Relative
iv. Indexed

Answer 1

Answer:

A two word instruction is stored in memory at an address designated by the symbol W. The address

field of the instruction is (stored in W+1) is designated by symbol Y. The operand used during the

execution of the instruction is stored at an address symbolized by Z. An index register contain the value

of X . State how Z is calculated from other addresses if the addressing mode of the instruction is

i. Direct

ii. Indirect

iii. Relative

iv. Indexed

Explanation: