Write down 2- differences between Von-Neumann and Harvard architecture.
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1. Write down 2- differences between Von-Neumann and Harvard architecture.
2. you are executing an instruction, SUB $s0, $s1, $s2 (address 0x20). Draw the datapath of this instruction when $s1=10, $s2=5. When are the stages in this datapath? Mark the components which are active in corresponding stages.
3. How to store(1050000)10 in register $s0? Write down the instructions that stores the data in $s0 register.
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- 1.Show the status of PSW (Program status word) after addition of two 8bit numbers 26H and 3FH. Also draw status of flag register with help of diagram? 2. Mention the addressing mode, function and how many bytes instruction for the following instructions? ADI 42H b. LXI H, 2500H c. RLC 3. Write assembly language program to add to 8-bit numbers with carry. First numbers stored on memory location 2500h, second number on 2501H and store 8bit result on memory location 2502H and carry on 2503H."In a buffer register, when the LOAD control signal is disabled or inactive, what is the content of the register?" high impedance all the bits are one all the bits are zero retain the previous content A tri-state buffer is needed for all data going to the W bus. True False "In a buffer register, when the LOAD control signal is enabled or active, the clock signal is loaded in the register. " True False The control signal Ep or iEnableoutput sends the contents of the register to the W bus. True False6.) Select all the 8088 input signals that can cause the microprocessor to take an interrupt. a.) OSC b.) INTA c.) NMI d.) READY e.) INTR f.) IRQ 7.) Given the 8088 instruction "INT nn", how many possible types of interrupts are there for the 8088? a.) 2 b.) 4 c.) 8 d.) 256
- What are the contents of the file registers WREG, 0x010, 0x020, 0x410, 0x420, after the following program is executed? Assume that all the register contents are initially zero.2 (a) Determine the control word ICW2 require for PIC controller so that IRQ0 to IRQ7 correspond to type numbers 30H to 37H , specify the memory location from which the processors will fetch interrupt vectors.In a multibyte addition program, when must you use the ADD instruction? When must you use the ADC instruction?
- What other options are there besides OUTPUT for the pinmode instruction?Continuing with a 32 Khz system clock/8000 Khz instruction clock, assuming a pre-scalar of1:1 (i.e. no prescalar), and 16-bit operation, if TMR0 is initialized to 64536, how many timeswill TMR0 need to be incremented before it overflows? How many instructions cycles will that take?Q. 1 There are different types of memories used in 8086 microprocessor one of them is called Stack. You are expected to investigate about it and answer the following questions related to it. i. What is stack memory? ii. What registers are associated with the stack in 8086? (including segment, pointer registers) iii. What is the use of stack? iv. Use any example which uses stack memory with appropriate instructions (PUSH, POP)
- 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.. Flag Register is a special purpose. Name two types of registers used in 8086 microprocessor. Consider the given example and explain how over flow, carry, parity and auxiallry flag will work on these instruction. MOV AL, 50 (50 is 01010000 which is positive) MOV BL, 32 (32 is 00110010 which is positive) DD AL, BL (82 is 10000010 which is negative)Describe I/O Direct addressing mode. Also, provide an example of an instruction that applies this addressing mode.