1 votes 1 votes CO and Architecture co-and-architecture addressing-modes + – Rahul Jain25 asked Oct 2, 2016 retagged Nov 13, 2017 by Arjun Rahul Jain25 958 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply agoh commented Jan 20, 2017 reply Follow Share What is the answer? 0 votes 0 votes smsubham commented Dec 29, 2017 reply Follow Share I think 7 will be correct. 000 used to specify no register then 7 registers. There is no need to use a separate bit to indicate if we would want to use index register. This way we can maximize address space use also. 1 votes 1 votes Please log in or register to add a comment.
0 votes 0 votes 3 bits instruction word to get an index register. Total number of index register with 3 bits=23=8 srestha answered Oct 2, 2016 srestha comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments Rahul Jain25 commented Oct 2, 2016 reply Follow Share One bit specify if register is used. 000 used to specify no register then 7 registers. If we use 1 bit entirely then 4 states. 2 votes 2 votes smsubham commented Dec 29, 2017 reply Follow Share @rahul I think 7 will be correct. There is no need to use a separate bit to indicate if we would want to use index register. This way we can maximize address space use also. 0 votes 0 votes Himanshu Kumar Gupta commented Jul 16, 2020 reply Follow Share I think 7 is the Right Answer 000 ---> No Register 001 ---> Register 1 010 ---> Register 2 011 ---> . 100 ---> . 101 ---> . 110 ---> . 111 ---> Register 7 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes If number of bits in operand part is 3 bits. Then number of index of register will be equal to =2^3=8 Paras Nath answered Oct 25, 2016 Paras Nath comment Share Follow See all 0 reply Please log in or register to add a comment.