Very Good
Computer Architecture and Assembly Language – Midterm 2011 1. In instruction ADC the operands can be o Two register only o Two register and one memory location o CF and two other operands o ZF and two other operands
2. After the execution of instruction “RET” o SP is incremented by 2 o SP is decremented by 2 o SP is incremented by 1 o SP is decremented by 1
3. The extended ASCII has o 64 characters o 128 characters o 256 characters o 502 characters
4. The second byte in the word designated for screen location holds o The dimension of the screen o Character position on the screen o Character color on the screen o ACSII code of the character
5. REP will always o Incremented CX by 1 o Incremented CX by 2 o Decremented CX by 1 o Decremented CX by 2
6. The routine that executes in response to an INT instruction is called o ISR o IRS o ISP o IRT
7. The iAPX888 architecture consists of _______ register. o 12 o 14 o 16 o 18
8. In the instruction “CMP AX,BX” the contents of o AX are changed o BX are changed not conformed o CX are changed o Flag register are changed
9. All the addressing mechanisms iniAPX88 return a number called ______ address. o effective o faulty o indirect o direct
10. The execution of the instruction “mov word [ES: DI], 0x0720” o will clear next character on screen o will print “20” at top left of the screen o will print “20” at top right of the screen o will move DI at location 0720 on the screen
11. “mov byte [num1],5” is _______ instruction. o legal o illegal o stack based o memory indirect
12. MOV instruction transfers a byte or word from which of the following source location. o DS:DI o ES:SI o ES:DI o DS:SI
13. The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be o Black o White o Red o Blue
14. If AX contains FFFFh, then after execution of instruction “SAL ax, 3”, the result
2. After the execution of instruction “RET” o SP is incremented by 2 o SP is decremented by 2 o SP is incremented by 1 o SP is decremented by 1
3. The extended ASCII has o 64 characters o 128 characters o 256 characters o 502 characters
4. The second byte in the word designated for screen location holds o The dimension of the screen o Character position on the screen o Character color on the screen o ACSII code of the character
5. REP will always o Incremented CX by 1 o Incremented CX by 2 o Decremented CX by 1 o Decremented CX by 2
6. The routine that executes in response to an INT instruction is called o ISR o IRS o ISP o IRT
7. The iAPX888 architecture consists of _______ register. o 12 o 14 o 16 o 18
8. In the instruction “CMP AX,BX” the contents of o AX are changed o BX are changed not conformed o CX are changed o Flag register are changed
9. All the addressing mechanisms iniAPX88 return a number called ______ address. o effective o faulty o indirect o direct
10. The execution of the instruction “mov word [ES: DI], 0x0720” o will clear next character on screen o will print “20” at top left of the screen o will print “20” at top right of the screen o will move DI at location 0720 on the screen
11. “mov byte [num1],5” is _______ instruction. o legal o illegal o stack based o memory indirect
12. MOV instruction transfers a byte or word from which of the following source location. o DS:DI o ES:SI o ES:DI o DS:SI
13. The execution of the instruction “mov word [ES: 0], 0x0741” will print “A” on the screen, color of the character will be o Black o White o Red o Blue
14. If AX contains FFFFh, then after execution of instruction “SAL ax, 3”, the result