2. The following instructions are a subset of an assembly language program: (2 points each) BALR R8,0 appears at hexadecimal address 000A The next line says USING",R8 The next line says LH R4,TEMP1 TEMP1 DCH'15' appears at hexadecimal address 016C (a) How is the address of TEMP1 calculated and what values are used? (b) Assume at execution time that the first instruction of the program is loaded at hexadecimal memory address 156000. How does that affect the addresses calculated at assembly time? (c) What is the purpose of the USING instruction? (d) What is meant by the terms "logical addressing" and "physical addressing"? (e) In order for the assembler to recognize the BALR instruction, what assembler directive is necessary? 2. The following instructions are a subset of an assembly language program: (2 points each) BALR R8,0 appears at hexadecimal address 000A The next line says USING",R8 The next line says LH R4,TEMP1 TEMP1 DCH'15' appears at hexadecimal address 016C (a) How is the address of TEMP1 calculated and what values are used? (b) Assume at execution time that the first instruction of the program is loaded at hexadecimal memory address 156000. How does that affect the addresses calculated at assembly time? (c) What is the purpose of the USING instruction? (d) What is meant by the terms "logical addressing" and "physical addressing"? (e) In order for the assembler to recognize the BALR instruction, what assembler directive is necessary