Chapter 7

Question 1

How zero flag sets

Answer 1

The zero flag is set if the last logical or the mathematical instruction has produced a zero in its destination

Question 2

What is effective address

Answer 2

All the addressing mechanisms in iAPX88 return a number called effective address

Question 3

What is IP

Answer 3

instruction pointer

Question 4

What is SS

Answer 4

Stack segment

Question 5

What are two basic forms of memory access

Answer 5

Direct addressing and indirect addressing using a single register

Question 6

What is segment override prefix

Answer 6

To override the association for one instruction of one of the registers BX, BP, SI or DI, we use the segment override prefix.

Question 7

What are two types of wraparounds

Answer 7

There are two types of wraparounds. One is within a single segment and the other is inside the whole physical memory.

Question 8

iAPX88 processor supports how much modes of memory access.

Answer 8

Seven