Executing the instruction `ADD AX, BX` performs which calculation?
Ch 03: Branching, Loops and Program Flow
Examines program control flow in assembly, flag register evaluation (ZF, CF, SF, OF), relative displacement jumps, implementing loops, and bubble sort sorting algorithms in assembly.
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CS401 - Computer Architecture and Assembly Language Programming Examination Practice
Timed practice exam simulation for CS401 - Computer Architecture and Assembly Language Programming.
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Page 14 of 27
In assembly language data definitions using the `db` (Define Byte) directive, what is the allocated memory size for each data element?
Consider the following x86 assembly code snippet:
```assembly
[org 0x0100]
mov ax, [num1] ; load first number in ax
mov bx, [num2] ; load second number in bx
add ax, bx ; _________________________________
int 0x21
num1: dw 5
num2: dw 10
```
What is the most appropriate inline code comment for line 4 (`add ax, bx`)?
Which of the following syntax declarations using the `db` directive validly defines character strings in assembly language?
When performing 16-bit division using `DIV reg16`, the instruction divides the 32-bit implied dividend in `DX:AX` by the 16-bit operand and stores the __________ quotient in register `AX`.
In x86 assembly language, division performed by the __________ instruction is integer division (truncating remainders) rather than floating-point division.
Which x86 instruction performs unsigned multiplication of a source operand with the implicit accumulator register (`AL` or `AX`)?
To reserve or define 8 bits (1 byte) of memory in assembly language, which data directive is used?
In the assembly instruction `mov ax, 5`, the literal constant `5` serves as the __________ operand.
When executing the 8-bit division instruction `DIV BL`, where must the 16-bit implied dividend be stored prior to execution?