Chapter 7 Flashcards Preview

Computer Architecture and Assembly Language Programming > Chapter 7 > Flashcards

Flashcards in Chapter 7 Deck (8)
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1
Q

How zero flag sets

A

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

2
Q

What is effective address

A

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

3
Q

What is IP

A

instruction pointer

4
Q

What is SS

A

Stack segment

5
Q

What are two basic forms of memory access

A

Direct addressing and indirect addressing using a single register

6
Q

What is segment override prefix

A

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

7
Q

What are two types of wraparounds

A

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

8
Q

iAPX88 processor supports how much modes of memory access.

A

Seven