18 Questions
What is the result of $90000075 - 50000075$ when represented in hexadecimal form?
$40000000$
If the programmer wants to test if [r1] is greater than [r2] considering the operands as unsigned numbers, which branching instruction should be used?
BHI (Branch if higher)
What condition needs to be satisfied for the BHI branching instruction to take the branch?
C
Which test instruction explicitly updates CPSR on Rn AND Operand2?
TST
What does the comparison N != V represent when considering signed numbers?
[r1] is greater than [r2]
What is the purpose of the 'TST' instruction in ARM assembly language?
Test if an ASCII character in r0 is lower-case
When executing CMP r1, r2, what does the computer perform?
[r1] - [r2]
How is the 'TEQ' instruction different from the 'CMP' instruction in ARM assembly language?
TEQ updates CPSR based on logical XOR, while CMP updates based on subtraction.
What does the CMP instruction do in assembly language?
Compares the contents of two registers and updates the CPSR flags
In which stage of the ARM7 pipeline does the 'decode' phase occur?
Stage 2: Decode
In the context of machine code conversion, what does the NE condition stand for?
Not Equal
What does the hexadecimal representation '0x2_0010000' represent in ARM assembly language?
An instruction to update CPSR based on a logical operation
How is error handling typically managed in assembly language programming?
By testing flag bits in the processor's CPSR
What is the purpose of the MVN instruction in ARM assembly language?
Negate and set the status flags based on logical NOT operation
Which instruction is used to invert all bits in a register in assembly language?
MVN
When does a branch instruction 'BNE' get executed in ARM assembly language?
If Z-bit is 0 (result of a previous operation is zero)
When interpreting hexadecimal numbers, what does it mean when [r1] > [r2] if considered as unsigned numbers?
[r1] is numerically greater than [r2]
What is the purpose of a conditional branch instruction in assembly language?
To execute a section of code only if certain conditions are met
Test your understanding of interpreting signed and unsigned numbers in comparison operations. This quiz covers scenarios where a number is negative or positive, and the computer performs arithmetic operations to update CPSR flags.
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