Write True / False. Justify your answer with brief explanation. It is not always

Question

Write True / False. Justify your answer with brief explanation. It is not always necessary for 8085 to de-multiplex AD0-AD7 bus while executing assembly language program. It is not possible to interrupt the processor again before the completion of first interrupt service routine If instruction RST I is written in assembly language routine, the program will jump to the location 0008H without any external hardware 8051 micro controller has two pointer registers (DPT & PC) Instruction RIM is used disable RST 7.5.6.5. 5.5 pins.

Explanation / Answer

a) TRUE, Address and data cannot be accessed simutaniously so the address and data bus has to be demultiplexed. b) FALSE,Based on the Inturupt Priorites If the second intrupt Task has higher priority than the first ISR then the second task can be will peempt 1st ISR. c) TRUE, Since its a sotware intrupt when RST1 is written in ASM then it goes back to the main programe. d) FALSE, 8051 has Only DPT i.e DPL,DPH e) FALSE, SIM is used to disable RST 7.5,6.5,5.5. RIM is a multipurpose instruction used to read the status of interrupts 7.5, 6.5, 5.5

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.