An 8085 microprocessor executes "STA 1234H" with starting address location 1FFEH (STA copies the contents of the Accumulator to the 16-bit address location). While the instruction is fetched and executed, the sequence of values written at the address pins A15 - As is
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- 8085 microprocessor went through its manipulation operation in the ALU, the results was transferred on the data bus and status of the results was stored in the flag register for indications . With your knowledge and understanding illustrate a complete bit configuration of 8085 flag register and show the functions of the represented bits in the register.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.4. Write a simple complete program with LOOP instruction for 8086 microprocessor, and explain the processes for each line of the program.
- 1. Draw the figure showing the types of registers in an 8086 microprocessor. Write the register group types explaining the functions shortly for each one.- The stack memory is addressed by a combination of the plus offset. The PUSH and POP instructions always transfer between segment -bit number the stack and a register or memory location in the 8086 microprocessors. For string instructions, DI always addresses data in the segment. The 8086 LOOP instruction decrements register for a 0 to decide if a jump occurs and tests itExplain the SUB instruction of 8086. Compare it with SBB instruction. Write a Assembly language program for 8086 to find the square root of a number using SUB instruction. (Note : Solve the question in paper, scan and upload along with the other Part B and C answers) A BIE
- Pipelining in 8086 processors is achieved using which of the following option: O a. By using the counting register CX that acts as counter for LOOP instruction. O b. By using the 6-byte instruction queue that stores pre-fetched instructions while one instruction is being executed. O c. By using accumulator AX, that stores the result of multiplication operation. O d. By using the adder of the Bus Interface Unit that converts logical address to physical address.Given a 8-bit number at memory location 2050H. Write 8085 instruction to move the value stored at the following locations: Register B Accumulator 2052H Write a single program and show register and accumulator screenshot and also attach memory view. In sim8085 software.P Flag question Explain the MUL instruction of 8086. Compare it with IMUL instruction. (1 +1 Marks) Write a Assembly language program for 8086 to find the cube of a number using MUL instruction. (5 Marks) (Note : Solve the question in paper, scan and upload along with the other Part B and C answers) B I III
- Draw 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.1. Write the contents of all registers and the conditions codes registers after each execution instructions in Table Q1(a). Instructions SUBS r0, rl, 12 MOV 12,13, ASR #3 ro 11223344 Table Q1 (a) rl F7770025 12 r3 CF119856 CF119856 NZ V C 010 1QUES1.) Write instructions to perform the following operations: (8051)(i) Move the content of Accumulator to register 7(R7).(ii) Move the contents of RAM memory location 55H to Port 1(iii) Receive content from ROM Memory location 200H into Accumulator.(iv) Clear bit 7 of the Accumulator. [NOTE: ANSWER OF ALL 4 PARTS IS NEEDED.]