1. How do the data retention characteristics of RAM and ROM storage devices differ?2. What is the purpose and use of the Program Counter (PC), Stack Pointer (SP), and MemoryAddress Register (MAR) registers?3. Write an 8085 program to store 4EH in memory location 2840H and store 3EH in memorylocation 2841H, exchange them and store the result in memory locations 2842H and 2843Hrespectively. Solve this problem using three different methods.4. Write a program to exchange the content of memory locations [2801] [2800] with [2803][2802].5. The following program is supposed to add the contents of memory location 2050h to theAccumulator. The program works correctly only part of the time. Show that it is wrong toexecute the program and how to correct it.MOVLDAADCHLTВ.А2050Hв6. In a multibyte addition program, when you must use the ADD instruction? When you mustuse the ADC instruction?7- The 8085-instruction set does not include a clear accumulator instruction. Which single-bytelogical instruction can perform this task?8- The 8085-instruction set does not include a clear carry instruction. Which single-byte logicalinstruction can clear the carry without modifying the contents of the accumulator?

“Since you have asked multiple questions, we will solve the first question for you. If you want any…

Answered: 1. How do the data retention…

Engineering

Electrical Engineering

1. How do the data retention characteristics of RAM and ROM storage devices differ?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Please answer the question with steps
Assume that the contents of 8086 microprocessor registers are: DS= 3300H, CS-1033H, SS= 1614H, SP= 1200H, and IP= 3400H. If the stack memory located at physical memory location 26130H, does the segment cover this range? If not, what changes need to be made?
Q1) Write an assembly program to duplicate each memory location block (size N) starting at address 200h.
For the 8085 microprocessor, the instruction (MVI B, 8-bit data) requires Fetch and Read machine cycles. What is the time in microseconds is required to execute it for a clock frequency of 3 MHz
Describe and compare the characteristics of TTL and CMOS Logic families. Please don't write on paper
Question: Assume a system comprises 16 GB physical memory with B KB page/frame sie and the instruction set comprises instructions that may need access to one (RET). two (PUSH AL or three (MOV A, B) memory locations to fetch the opcode and operands. Assuming that the system is configured with virtual memory: (a) What is the MINIMUM number of memory frames that must be allocated to a process running in the system? (b) What is the MAXIMUM number of memory frames that can be allocated to a process running in the system?
Briefly answer the following questions: a) List at least 5 SFRs in PIC18F87J11. b) Given an instruction example for each addressing mode in PIC18F87J11. c) Describe and draw the memory architecture for PIC18F87J11
e t n Se 11 • REC Assume a very simple microprocessor with 12 address lines with which we wish to implement only a quarter of the largest addressable memory using the same 512x8 memory chips. Physical memory must be placed on the upper half of the memory map. a. What is the size of the memory implemented? b. How many memory chips would be needed to implement this memory space? c. How many lines would each chip require to address its internal memory cells? d. How many lines would be required to select each chip e. Draw a simplified partial address decoding table listing all the memory chips as (MEMO, MEM1, MEM 2. etc.) and show the lines used for address decoding (chip selection) and those used to address internal memory cells. Fill the table appropriately with 1's, O's and X's (don't cares). 4. Consider the data definition statement below. num1 WORD 192AH array1 WORD OA23BH, 7EA1H, 5BEFH a. Write assembly code to compute the size of the data label array1. b. Write assembly code to add…