Ch8
Stack and Instruction Quiz
Test your knowledge on stack operations and instruction sets in computer architecture with this engaging quiz! Dive into various topics including subroutine calls, stack pointers, and instruction types.
- Assess your understanding of stack mechanics
- Challenge your knowledge of assembly language instructions
- Perfect for students and educators alike!
A stack where the stack pointer is updated with every operation is more efficient than a stack where the data moves after each operation since the cost of changing the contents of the stack pointer is much less than the cost of moving all the data.
True
False
The bits [11:0] of the RET instruction specify the address to return to.
True
False
The only difference between JSR and JSRR is the addressing mode used for evaluating the starting address of the subroutine.
True
False
In the LC-3, the JSRR instruction can jump to any memory location, from x0000 to xFFFF.
True
False
Changing R7 without saving its contents during a service routine is problematic as it destroys the linkage back to the initiating program.
True
False
In a stack with a capacity of 3 elements, three pushes followed by four pops results in an overflow.
True
False
If R6 is the stack pointer and each element in the stack occupies two memory locations, a push operation on the stack requires that R6 be decremented by 2.
True
False
Given an empty stack and this sequence of operations performed on the stack, what is the last value popped?
3
5
2
9
If R6 is the stack pointer and contains the value x4001, and R0 contains the value to be pushed onto the stack, what will be the contents of R6 after this push routine:
X4002
X4001
X4000
X4003
If R6 is the stack pointer, and the stack grows towards zero, what is wrong with the following pop routine:
Nothing is wrong.
R6 should be incremented, not decremented.
the value of R6 is written to R0, not the contents of the memory location pointed to by R6
R6 should be incremented twice, not once
Assume that the stack grows towards zero, the stack pointer is R6 and contains x4000. What are the contents of R6 after the following operations:
X4002
X3FFF
X3FFE
4001
. In a FIFO data structure, the elements are inserted at the top and removed from the bottom. What is the last value removed after execution of the following:
8
5
3
17
R6 is the stack pointer. What are the contents of R0 after this operation: LDR R0, R6, #0
The stack pointer
The value of the top of the stack
The value of the bottom of the stack
0
Which instruction performs the exact same function as JMP:
BRnz
BRnp
BRnzp
None
. In a JSR instruction, what is the maximum offset you can jump to from the JSR instruction location:
511 words
1023 words
255 words
63 words
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