Instruction-Cycle
Question 1 |
Consider a RISC machine where each instruction is exactly 4 bytes long. Conditional and unconditional branch instructions use PC-relative addressing mode with Offset specified in bytes to the target location of the branch instruction. Further the Offset is always with respect to the address of the next instruction in the program sequence. Consider the following instruction sequence
If the target of the branch instruction is i, then the decimal value of the Offset is ___________.
-16 | |
-17 | |
-18 | |
-19 |
Question 1 Explanation:
Size of each instruction = 4 Bytes
Program counter Relative Addressing Mode
⇾ Assuming the first instruction starts at address zero
Offset should go from Address 16 to Address 0
⇒ Offset = 0 – 16 = (-16) ⇾ Final answer
Program counter Relative Addressing Mode
⇾ Assuming the first instruction starts at address zero
Offset should go from Address 16 to Address 0
⇒ Offset = 0 – 16 = (-16) ⇾ Final answer
There is 1 question to complete.