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Types of Instructions Achievers Practice Quiz

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Question 1

Assume the base register contains 32856. The program counter is currently at 25687 memory location. What is the branch address if address field of jump instruction contain –30 in address field and the instruction is designed with the base register addressing modes?

Question 2

A device employing INTR line for device interrupt puts the CALL instruction on the data bus while?

Question 3

Consider we have instruction Load 1000. Given that memory and register R1 contain the values below:

Assuming R1 is implied in the indexed addressing mode,

What is the actual value loaded into the accumulator?

Question 4

Considering 4 bytes long PC-relative jump instruction store in the memory location (8040) base

A ‘-42’ signed constant is present in the address field of instruction .What is branch address?

Question 5

Let the number of times the processor need to refer to memory when it fetches and executes an indirect-address-mode instruction if the instruction is the computation requiring a single operand be x and if the instruction is the computation requiring a branch be y. Then find the value of x+y _____ .

Question 6

A computer uses a memory unit with 512K words of 32 bits each. A binary instruction code is stored in one word of memory. The instruction has three parts: an operation code, a register code part to specify one of 128 registers, and an address part (respectively), The number of bits in the opcode(operation code) is___

(Assume that the memory is word addressable)

Question 7

If the Base register contains 8080 value and Address field of an instruction contains -42, then what is the branch address when the instruction is designed with based register Addressing mode.
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Nov 10GATE & PSU CS