Where is the operand found in each of the following two Pep/9 addressing modes?  s =  sf =  x =  n =

Which registers are used as passing parameters in a function or as a return valuenormally?The code below is a function that follows the ARM calling convention discussed inclass. The line numbers are for reference only and are not part of the code.1 ;64-bit addition: adds two 64-bit numbers2 ;inputs are in r1,r0 and r3,r234 add64: STR r4,[r13],#-45 STR r5,[r13],#-46 ADDS r4,r0,r27 ADC r5,r3,r18 MOV r0,r49 MOV r1,r510 LDR r5,[r13,#4]11 LDR r4,[r13,#4]12 MOV r15,r14A) Explain the purpose of the "push" statements on lines 4 and 5 and the "pop"statements on lines 10 and 11.Why are these statements needed for this function?B) Explain the purpose of the MOV instruction on line 12.

During a 1/0 read: [select all that are true] The address flows in to the MPU RD = 0 The address is sent out by the MPU WR =0 Data flows out from the MPU Data flows to the MPU

Write the following in LC3 code: Write a program that compares two values stored at memory locations x30A2 and x30A3. If the value at x30A2 is larger than the value at x30A3 then store the value of 1 in R1, else store the value of 0 in R1.Use PC + offset addressing to load contents of x30A2 into R2 and x30A3 into R3. Repeat the previous using Base + offset (load register). Use the load immediate (LEA) instruction to set up the base (R4) with the address of x30A2