I am watching IIT Madras lecture of Addressing mode, in that Prof take an example, in which we have a register r0 = 1000
Time :- 05:10
Content of Memory location 1000 = 1010
Content of Memory location 1010 = DATA
According to his definition, he described 3 addressing modes
Register mode: Data is present in the register.
Register Direct mode : In this the ADDRESS OF THE DATA IS DIRECTLY PRESENT IN THE REGISTER.
Register Indirect mode/ Register Deferred mode: In this register contain the address 1000, and the content of M is 1010 which is also a address, content of m is ACTUAL DATA.
Which means in
Register mode to get the data 1 Reg Ref is required.
Register Direct mode to get the data 1 Reg Ref and 1 Mem ref is required.
Register Indirect Mode to get the data 1 Reg Ref and 2 Mem ref is required.
But In CARL HAMACHER:-
Register Indirect is defined through this diagram:-
while according to IIT Madras Prof it should be Register DIrect mode.
which one among these are true or something I am missing.