Question

The instruction {mov AL, 57} is and example of using immediate addressing mode T/F? If AL = 35 h then after {not al, 1} it becomes AL = 6A h T/F? In assembly: the Immediate addressing mode is not allowed in the dec instruction T/F? Each running program (in the main memory) must have a code segment, T/F? Are these two assembly instructions (rol ax.3) and frel ax,3) exactly the same (YN)? Write a list four to six processors/microprocessors (Intel microprocessor) with correct release time (in chronological order): (Hint: one of the items in the list will be: Intel 80386: 19853

Answer 1

1)The instruction {mov AL,57} is the example of using immediate addressing mode= True

In Immediate Addressing mode, the operand, which follows the Opcode, is a constant data of either 8 or 16 bits. The name Immediate Addressing came from the fact that the constant data to be stored in the memory immediately follows the Opcode.

This instruction means save an immediate 57 value in AL register,so it is immediate addressing mode.

2)The immediate addressing mode is not allowed in the dec instruction=False

The constant value to be stored is specified in the instruction itself rather than taking from a register. The destination register to which the constant data must be copied should be the same size as the operand mentioned in the instruction.

dec=dec-1 so it is immediate addressing mode.

3)Are these two assembly instructions{rol ax,3} and {rel ax,3} exactly the same=yes

4)write a list of four to six microprocessors(INTEL) with correct release time.

4-bit 4004-1971

8-bit 8080-1974

64-bit i-APX-1984

64-bit Itanium 2-2002