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What is the addressing mode used in the instruction PUSH B?

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  1. Direct
  2. Register
  3. Register indirect
  4. Immediate

Answer (Detailed Solution Below)

Option 3 : Register indirect
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PUSH B:

  • Store the contents of register pair BC on top two locations of the stack
  • Address are defined by stack pointer
  • So, it is register indirect addressing mode
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Q1.In the case of, Zero-address instruction method the operands are stored in __________.
Q2.Match List I with List II LIST - I LIST - II A. Direct Addressing I. MVI A, FFH B. Indirect Addressing II. MOV A, B C. Register Addressing III. STA FFFFH D. Immediate Addressing IV. MOV A, M Choose the correct answer from the options given below:
Q3.Which of the following statements are correct? A. The first three-address instruction in the intermediate code is a leader. B. The instruction which is exactly at the middle of the given three address code is a leader. C. Any instruction that is the target of a conditional or unconditional jump is a leader. D. Any instruction that immediately follows a conditional or unconditional jump is a leader. Choose the correct answer from the options given below: 
Q4.Which one of the following is a drawback of Programmed and Interrupt-Driven I/O? 
Q5.In 8085 microprocessor CMA, RLC, RRC instructions are examples of which addressing mode?
Q6.An instruction is stored at location 300 with its address field at location 301. The address field has value of 400. A processor register R1 contains the number 200. Evaluate the effective address if the addressing mode of instruction is immediate?
Q7.In which type of addressing, the address field contains effective address?
Q8.For which of the following an index register in a digital computer is used?
Q9.Microinstructions are stored in control memory groups, with each group specifying a
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Q1.Which of the following statement(s) is/are correct? Statement A : ALU can perform both arithmetic and logical operations. Statement B : CPU is used to process, display and store data or information.
Q2.The addressing mode/s, which uses the PC instead of a general-purpose register is : 
Q3.A microprogrammed control unit : 
Q4.Consider the following sequence of micro operations : MBR ← PC MAR ← X PC ← Y MEMORY ← MBR Which one of the following is possible operation performed by this sequence ?
Q5.In the case of, Zero-address instruction method the operands are stored in __________.
Q6.A demultiplexer is used to :
Q7.More than one word is put in one cache block to : 
Q8.Which method bypasses the CPU for certain types of data transfer operation ?
Q9.If the virtual memory size is 32 MB and a physical memory size is 4MB with a page size of 2KB, Calculate the number of frames available in physical memory
Q10.Which of the following is the correct sequence with regard to service routine? A. Save contents of processor registers B. Turn the interrupt facility on C. Service the device whose flag is set D. Check which flag is set E. Restore contents of processor registers Choose the correct answer from the options given below:
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