Contents
What determines the size of a register within this CPU?
Size. Registers are normally measured by the number of bits they can hold, for example, an “8-bit register”, “32-bit register” or a “64-bit register” or even more.
What is the instruction register in a CPU?
In computing, the instruction register (IR) or current instruction register (CIR) is the part of a CPU’s control unit that holds the instruction currently being executed or decoded.
What is the size of a register?
Registers are memories located within the Central Processing Unit (CPU). They are few in number (there are rarely more than 64 registers) and also small in size, typically a register is less than 64 bits in size.
What is instruction register with example?
The machine is designed to operate by repeating the following two phases for every instruction in the program. The Control Unit generates the control signals that copy an instruction byte from the memory into the Instruction Register, IR. The address of this instruction is in the Program Counter, PC.
What are the six stages of instruction in pipelining?
The six stages are as follows:
- Fetch instruction (FI):
- Decode instruction ((DI):
- Calculate operand (CO):
- Fetch operands (FO):
- Execute Instruction (EI):
- Write operand (WO): Fetch instruction: Instructions are fetched from the memory into a temporary buffer before it gets executed.
How is the size of a processor register measured?
Size Registers are normally measured by the number of bits they can hold, for example, an ” 8-bit register”, ” 32-bit register” or a ” 64-bit register” or even more.
How many registers are there in a 32 bit processor?
As the processor has 24 register, number of bits for one register = 5 (2^5 = 32) Total bits occupied by 2 registers and opcode = 6 + 5 + 5 =16. As instruction size given is 32 bits, remaining bit left for operand = 32-16 = 16 bits. Que-3. A machine has a 32-bit architecture, with 1-word long instructions.
How many bits are required for a register identifier?
The instruction consists of opcode and operands. Given the instruction set of size 12, 4 bits are required for opcode (2^4 = 16). As there are total 64 registers, 6 bits are required for identifying a register. As the instruction contains 3 registers (2 source + 1 designation), 3 * 6 = 18 bit are required for register identifiers.
How many instructions are there in a processor?
In this type of questions, you will be given the size of instruction, size of opcode, number of operands and size of some operands, you have to find out the size or maximum value of remaining operands. Que-2. A processor has 40 distinct instructions and 24 general purpose registers.