What is the maximum memory size that can be connected to a processor with a lower order address bus of 24 lines and a higher order address bus of 4 lines? a. 256GB b. 16MB c. 256MB d. 16GB
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- What is the maximum memory size that can be connected to a processor with a lower order address bus of 24 lines and a higher order address bus of 4 lines? a. 256GB b. 16MB c. 256MB d. 16GB Note: Please do not handwritten.For a microprocessor similar to ATmega328p an 8 bit ADC uses a VREF = 3.3 V. When an analog read is executed the return value is 112. What Voltage is present on the input? Enter the value in the box provided in mV. Round to the nearest mV.4) Design and draw these memory units with their control circuits. Explain operations. a) A single EPROM 2716 is used with an 8088 microprocessor so that this microprocessor will see only X bytes of memory between the address range of DF800 –DFFFF or DD800 - DDFFF instead of 1M byte that it expects. Draw this circuit. What are X bytes? Do not use 74138 decoders. b) Design and show a 16K x 16-bit memory circuit by using 8K x 8-bit RAMS. Explain its operation. Do not use decoder 74138 chip.
- Assume that the microprocessor can directly address 1M with a and 8 data pins. The maximum RAM system can design by using the following RAM chips is given in the below table. Choose the correct option:(provide answer in details) (a) None of them (b) 25K x 8 (c) 27K x 8 (d )26K x 8 (e) 24K x 8Design a 1022*6 ROM memory by using a 256*4 Rom memoryConsider the following external memory connections to a microcontroller which is similar to that of a microprocessor. What is the size of the memory? Microcontroller RAM/ROM 3 O A. none of the choices O B. Could be 4 x 3 bits or 16 x 3 bits O C. Could be 4 x 16 bits or 4 x 3 bits O D. 4 x 2 bits O E. 8x3 bits 2
- 2. A microprocessor has a memory space of 4 MB. Each memory address occupies one byte. a) What is the address bus size (number of bits needed for addressing) of this microprocessor? b) What is the range (lowest to highest, in hexadecimal) of the memory space for this microprocessor? c) Complete the memory map by the address ranges (lowest to highest, in hexadecimal) 8 bits for each memory chip. 0x 0x 0x 0x 0x 0x 0x 0x Address 0 1MB 1MB 1MB 1MB1. 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 Memory Address Register (MAR) registers? 3. Write an 8085 program to store 4EH in memory location 2840H and store 3EH in memory location 2841H, exchange them and store the result in memory locations 2842H and 2843H respectively. 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 the Accumulator. The program works correctly only part of the time. Show that it is wrong to execute the program and how to correct it. MOV LDA ADC HLT В.А 2050H в 6. In a multibyte addition program, when you must use the ADD instruction? When you must use the ADC instruction? 7- The 8085-instruction set does not include a clear accumulator instruction. Which…You buy a ROM memory chip that is 64Kx8. How many memory address lines does the chip have? A 16 B 64K C 512 D 8
- You buy a ROM chip that is 2Kx8. How many memory address lines does the chip have? A. 2K B. 16K C. 11 D. 8Draw the figure for memory segments with 8086 microprocessor software model. Explain the logical address structure used for each segment (Explain which registers are used in logical address presentation of each segment; segment address : offset address). Give an example solution to find the physical address in a segment from the logical address for 8086 microprocessor.c) Given a 32K x 8 RAM chips. Compute: i) the number of chips needed to build a 128K byte memory using 32K x 8 RAM. ii) the number of address lines that must be used to access the memory. iii) the number of lines connected to the address inputs of each chip, the number of lines to be used for chip select inputs and type of decoder to be used. iv) Determine the range of addresses for the 128K byte memory.