6. To incremet both AL, AH register: a. INC AX b. INC AL INC AH c. both (a) and

Question

6. To incremet both AL, AH register:

a. INC AX

b. INC AL

INC AH

c. both (a) and (b) are correct

What is the content of Stack Pointer ? (1-6 carry one point each) a. Address of the current instruction b. Address of the next instruction c. Address of the top element of the stack d. None of the above 1. 2. In 8086/80386 microprocessor, the value of the most significant bit of the result following the execution of any arithmetic or Boolean instruction is stored in the a. carry status flag b. auxiliary carry status flag c. sign status flag d. zero status flag 3. Which of the following instruction(s) can be performed only in CX register a. LOOP b. MUL, DIV, CMP C. ADD, SUB Which of the following statements about 8-bit two's complement are correct? a. The most significant bit has a weight of -26 b. The representable range is -128 to +127 4. c. The representable range is -127 to +128 The EAX register full name is a. Accumulator register b. Base register c. Counter register 5.

Explanation / Answer

1. c) Address of the top element of the stack
2. c) sign status flag
3. a) LOOP
4. b) The representable range is -128 to +127
5. a) Accumulator register
6. b) INC AL INC AH

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