CS501 Midterm Past Papers

CS501 Mid Term

For any of the instructions that are a part of the instruction set of the SRC, there are certain _______required; which may be used to select the appropriate function for the ALU to be performed, to select the appropriate registers, or the appropriate memory location.

1. Register
2. Control signals (Page 171)
3. Memory
4. None of the given

Correct answer: Control signals (Page 171)

FALCON-A processor bus has 16 lines or is 16-bits wide while that of SRC _____wide.

1. 8-bits
2. 16-bits
3. 32-bits (Page 157)
4. 64-bits

Correct answer: 32-bits (Page 157)

What is the instruction length of the FALCON-A processor?

1. 8-bits
2. 16-bits (Page 134)
3. 32-bits
4. 64-bits

Correct answer: 16-bits (Page 134)

_______control signals enable the input to the PC for receiving a value that is currently on the internal processor bus.

1. LPC (Page 172)

CS501 Mid Term

1. INC4
2. LC
3. I

Which one of the following is a bi-stable device, capable of storing one bit of information?

1. Decoder
2. Flip-Flop (Page 76)
3. Multiplexer
4. Diplexer

Correct answer: Flip-Flop (Page 76)

Which instruction is used to store register to memory using relative address?

1. ld instruction
2. ldr instruction
3. lar instruction
4. str instruction (Page 48)

Correct answer: str instruction (Page 48)

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

1. Op-code (Page 33)
2. CPU registers
3. Momory cells
4. I/O locations

Correct answer: Op-code (Page 33)

The instruction ___________ will load the register R3 with the contenets of the m\emory location M [PC+56] CS501 Mid Term

1. Add R3, 56
2. lar R3, 56
3. ldr R3, 56 (Page 56)
4. str R3, 56
5. Change
6. Reset (Page 194)
7. Update
8. None of the given

which type of instructions help in changing the flow of the program as and when required?

1. Arithmetic
2. Control (Page 137)
3. Data transfer
4. Floating point

Correct answer: Control (Page 137)

Which one of the following registers holds the address of the next instruction to be executed?

1. Accumulator
2. Address Mask
3. Instruction Register
4. Program Counter (Page 151)

Correct answer: Program Counter (Page 151)