Exam (elaborations)
ARM microarchitecture Exam 2024/2025 Questions With Completed & Verified Solutions.
- Course
- Institution
ARM microarchitecture Exam 2024/2025 Questions With Completed & Verified Solutions.
[Show more]
Content preview
ARM microarchitecturehow many instructions can be fetched - ANS 4
What follows the fetch queue - ANS ARMv8 instruction decode
where do the decoded instructions travel to? - ANS the instruction scheduler
How many execution units? - ANS 8 - 2 for floating point
2 for integer
1 normal alu
1 for store
2 for load/ store
Registers following execute - ANS 4 for integer, 4 for floating point. This is written to data cache
how many cycles are given to floating point calculations? - ANS 4
What are the registers in Cortex-A53 architecture - ANS R0-R12 -> general purpose
R13 -> stack pointer (used by subroutine calls)
R14 -> Link Register (Used by subroutine calls)
R15 -> program counter (points to next instruction to be executed)
CSPR
What is CSPR? - ANS Current program status register. These are flags used by conditional
branch instructions.
Examples of CSPR flags - ANS N ->Negative result from ALU
Z -> Zero result from ALU
C -> ALU operation carry out
V -> ALU operation overflowed
How is cache arranged? - ANS L1, exclusive per core, fastest as closest to CPU
L2 -> internal, however shared between cores
L3 -> external -> outside of CPU but closest to bus and main memory.
Set - Associative cache - ANS Replicates every line a fixed number of times.
Data fetched from main memory could be in more than one place. This reduces thrashing and
improves performance
What is a Line? - ANS A block of contiguous words from main memory
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller phylliswambui. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82191 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
