CS501 Grand Quiz by MCS Family

CS501 GRAND QUIZ · SOLUTION MADE BY: · ARSL SHANI, AINA MALIK & MCS FAMILY GROUP TEAM

1. The multiplexer------------is used to decide which value is transferred to be written back to the register file.

• MP2
• MP3
• MP4
• MP5

Q2. Which of the following condition is evaluated when executing the branch instruction “brzr R2, R1”?

• If(R2==0)
• If( R1 >0 )
• If( R1==0)
• If( R1 < 0)

3. In case of SRC processor, bits---------of IR (instruction register) are reserved for the opcode.

• 0 to 4
• 11 to 15
• 27 to 31
• 59 to 63

Q4. Which of the given RTL description is used to represent “load instruction register” (ldr) instruction?

• (op<4..0>=6): R[ra] rel
• (op<4..0>=2): R[ra] M [rel]
• (op<4..0>=2): M[disp] R [ra]
• (op<4..0>=2): M[rel] R [ra]

5. -------- Instruction is used to divide a register value by immediate value in FALCON-E processor.

• div
• idiv
• divi
• divim

6. Which field of machine language instruction is the “type of operation” that is to be performed.

• Op-code(or the operation code)
• CPU register
• Memory Cells
• I/O Location

Q7. Which of the following control signal is NOT activated during instruction fetch operation?

• PCout
• LC
• LMAR
• Cout

8. In case of FALCON-A------------ instruction are present which are not present in SRC processor.

• create and destroy
• in and out
• open and close
• read and write

9. ----------- provides a temporary storage for the address of memory location to be accessed.

• MAR
• MBR
• PC
• LPC

Q10. Which of the following register is used to enable the tri-stable buffers with the MBR?

• MBRout
• MARout
• LMBR
• INC4

Q11. What functionality is performed by the instruction “str R8, 34” of SRC?

• It will load the register R8 with the contents of the memory location M[34]
• It will store the register R8 contents to the memory location M[34]

12. Program Counter(PC) holds the memory address of:

• Previous Instruction
• Current Instruction
• Next Instruction
• Previous and Current Instruction

Q13. What is the working of Processor Status Word (PSW)?

• To hold the current address of the process

14. mul is the example of a(n)------------ operation.

• Logic
• Shift

15. Control Signal for RTL “IR< ---MBR” will be---------

• MBRout,LIR
• PC< --C
• PC< --MBR
• PC< --IR

Q16. What does the instruction”ldr R3, 58” of SRC do?

• It will store register R3 contents to the memory location M[PC+58]
• It will store the value of register R3 at the relative address itself(PC+58)

17. The status register of the 68000 has -------- condition codes.

• 2
• 3
• 5
• 8

Q18. Which of the instruction is used to load register from memory using relative address?

19. For the ------ type instruction, we require a register to hold the data that is to be loaded from the memory, or stored back to the memory.

• Jump
• Control
• L
• Branch

20. In a processor, ----------- is responsible for the synchronization of internal as well external events.

• Memory Unit
• Data Unit
• Arithmetic & Logic Unit
• Control Unit

21. In CPU design, ------------ creates or forms the interface between the data path and control unit.

• Buses
• ALU
• cache

22. ----------- Control signal enables the input to the PC for receiving a value that is currently on the internal processor bus.

• LPC
• INC4
• LC
• Cout

23. In SRC, the effective address is computed a run-time by adding a constant to value of---------- register.

• FLAGS
• IR
• PC
• Ra

24. --------- control signal allow the content of the program counter register to be written onto the internal processor bus.

• INC4
• LPC
• PCout
• LC

25. In ---------- instruction format of EAGLE processor, there is no field reserved for the operands.

• Type V
• Type Y
• Type X
• Type Z

26. In Type C instruction of SRC, ---------- bits are allocated for constant values.

• 16
• 17
• 21
• 22

27. A general purpose digital computer has --------- main components.

• 2
• 3
• 4
• 5