Chapter 6 Flashcards
1
Q
What is the purpose of following registers. BX BP SI DI
A
For memory access
2
Q
What is the difference between num1 and [num1]
A
location and value
3
Q
Can we manipulate memory addresses by adding and subtracting
A
Yes
4
Q
Is memory to memory move allowed
A
No
5
Q
What 4 registers hold the address of data
A
BX, BP, SI, DI
6
Q
What is the purpose of data labels
A
They hold the address of data
7
Q
What is the purpose of code labels
A
They hold the address of code
8
Q
What is JNZ
A
JNZ stands for “jump if not zero”
9
Q
What is register indirect memory access
A
A register is used to reference memory so this form of access is called register indirect memory access.
10
Q
What is base addressing
A
An indirect memory access using base register is called base addressing.
11
Q
What is indexed addressing
A
An indirect memory access using SI or DI is called indexed addressing
