Exam (elaborations)
WGU C952 5 The Processor questions with verified answers
- Institution
- Western Governors University
WGU C952 5 The Processor questions with verified answers
[Show more]
Content preview
WGU C952 5 The Processor questions with verifiedanswers
Anti-dependence Ans✓✓✓ Also called name dependence. An ordering forced by
the reuse of a name typically a register, rather than by a true dependence that
carries a value between two instructions
Architectural registers Ans✓✓✓ The instruction set of visible registers of a
processor; for example, in LEGv8, these are the 32 integer and 32 floating-point
registers
Asserted Ans✓✓✓ The signal is logically high or true
Branch not taken Ans✓✓✓ A branch where the branch condition is false and the
program counter (PC) becomes the address of the instruction that sequentially
follows the branch.
Branch prediction buffer Ans✓✓✓ Also called branch history table. A small
memory that is indexed by the lower portion of the address of the branch
instruction and that contains one or more bits indicating whether the branch was
recently taken or not.
Branch prediction Ans✓✓✓ A method of resolving a branch hazard that assumes
a given outcome for the branch and proceeds from that assumption rather than
waiting to ascertain the actual outcome.
Branch taken Ans✓✓✓ A branch where the branch condition is satisfied and the
program counter becomes the branch target. All unconditional branches are
taken branches
, Branch target address Ans✓✓✓ the address specified in a branch, which
becomes the new program counter if the branch is taken. In the LEGv8
architecture, it's given by the sum of the offset field of the instruction and the
address of the branch
Branch target buffer Ans✓✓✓ A structure that caches the destination program
counter (PC) or destination instruction for a branch. It is usually organized as a
cache with tags, making it more costly than a simple prediction buffer.
Clocking methodology Ans✓✓✓ The approach used to determine when data is
valid and stable relative to the clock.
Combinational element Ans✓✓✓ An operational element, such as an AND gate
or an ALU.
Commit unit Ans✓✓✓ The unit in a dynamic or out-of-order execution pipeline
that decides when it is safe to release the result of an operation to programmer-
visible registers and memory.
Control hazard Ans✓✓✓ Also called branch hazard. When the proper instruction
cannot execute in the proper pipeline clock cycle because the instruction that was
fetched is not the one that is needed; that is, the flow of instruction addresses is
not what the pipeline expected.
Control signal Ans✓✓✓ A signal used for multiplexor selection or for directing
the operation of a functional unit; contrasts with a data signal, which contains
information that is operated on by a functional unit.
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 cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67227 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now