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Show bitwise psw of 8085 and 8086 and explain the function of each flag with an example?
The Program Status Word (PSW) for the 8085 and 8086 microprocessors consists of various flags that indicate the status of operations. In the 8085, the flags include the Sign Flag (S), Zero Flag (Z), Auxiliary Carry Flag (AC), Parity Flag (P), and Carry Flag (CY). For example, if an operation results in a negative value, the Sign Flag is set, while if the result is zero, the Zero Flag is set. In 8086, the PSW includes similar flags but adds the Overflow Flag (OF), which indicates an overflow in signed arithmetic operations.
What else can I help you with?
Explain difference 8085 and 8086 in detail?
a number (1) because 8085+1=8086
What is the instruction for exit in 8085 microprocessors?
There is no exit instruction in the 8085. Do you mean return, as in from a function or interrupt? If so, the instruction is RET.
What is slow memory interfacing?
explain how slow memory get interfaced with 8085
What is the function of control bus in references to 8085 microprocessor?
It provides timing signals.
What is the function of accumulator 8085?
It is an 8 bit register which is accessable to programmer and is main fuction is to perfom all arithmetic and logical function.
What is the function of TMP register of ALU in 8085 microprocessor?
The TMP register in the 8085 is used to hold temporary results of operations. You cannot directly manipulate it, so you should just pretend it is not there.
Microprocessor PREVIOUS question papers for bca 2nd year IN MADRAS UNiversity?
PART - A 10*3=30 1. Define Micro Processor. 2. What is an accumulator. 3. Why Data Bus id Bidirectional? 4. What is Microcomputer? Explain the difference between a microprocessor and microcomputer 5. List the applications of micro computer. 6. What are the advantages of microprocessor based system? 7. Explain the functions of IO/Min 8085. 8. What is Flag? List the flag of 8085. Show the bit positions of various flags in 8085 flag register? 9. Why Address Bus is unidirectional? 10. What are the Interrupts in 8085? PART - B 5*6=30 11. What are Data Transfer Instructions, Write any Instruction. 12. Define the following Terms Compiler, Assembler, Interpreter with example 13. Explain Instructions & Data Format. 14. Explain & Draw a Block Diagram of Computer with the microprocessor as CPU. 15. Explain the Logical Operations. PART - C 4*10=40 16. Explain the Microprocessor Architecture and its operations 17. Explain the various pins of 8085 Microprocessor 18. List the Registers in the 8085 Microprocessor & explain the functions in detail 19. Write a Assembly language program to add two 8 bit numbers 20. Write a Assembly language program to add 16 bit numbers
Why masking is needed in 8085?
Masking in the 8085 microprocessor is necessary to selectively manipulate specific bits within a byte of data. It allows for operations such as isolating, setting, or clearing particular bits without affecting others, which is crucial for tasks like flag management and bitwise operations. By using a mask, programmers can efficiently control hardware interfaces and manage data in applications that require precise bit-level operations.
How do you draw timing diagram for 8085 instruction LHLD 5000H?
There is an example of a LHLD 5000H diagram on this website: atelier-drachenhaus.de/timing-diagram-8085. This will provide an idea of how to draw the diagram.
Why the name 8085 Why the name 8085 for microprocessor?
8085 is a microprocessor designed by Intel
What is PMW in 8085 microprocessor?
I know of no PMW pin or PMW instruction in the 8085. Please restate the question. If you are asking about PWM, or pulse width modulation, please note that that is not an 8085 specific thing. It would be a function of system design, and you could achieve PWM with programming, but the answer would depend on the particulars of that system design.
Why the 16 bit 8085 microprocessor is not possible?
The 8085 was replaced with the 8086/8088. As such, there is no 16 bit version of the 8085.
