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improve rendering on git

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peteraa 6年前
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      theory2.org

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@@ -40,6 +40,7 @@
** Data hazards 1 ** Data hazards 1
At some cycle the following instructions can be found in a 5 stage design: At some cycle the following instructions can be found in a 5 stage design:
#+begin_src text
EX: || MEM: || WB: EX: || MEM: || WB:
---------------------||-------------------------||-------------------------- ---------------------||-------------------------||--------------------------
rs1: 4 || rs1: 4 || rs1: 1 rs1: 4 || rs1: 4 || rs1: 1
@@ -50,6 +51,7 @@
memWrite = false || memWrite = false || memWrite = false memWrite = false || memWrite = false || memWrite = false
branch = false || branch = true || branch = false branch = false || branch = true || branch = false
jump = false || jump = false || jump = false jump = false || jump = false || jump = false
#+end_src
For the operation currently in EX, from where (ID, MEM or WB) should the forwarder get data from for rs1 and rs2? For the operation currently in EX, from where (ID, MEM or WB) should the forwarder get data from for rs1 and rs2?
@@ -57,6 +59,7 @@


At some cycle the following instructions can be found in a 5 stage design: At some cycle the following instructions can be found in a 5 stage design:
#+begin_src text
EX: || MEM: || WB: EX: || MEM: || WB:
---------------------||-------------------------||-------------------------- ---------------------||-------------------------||--------------------------
rs1: 1 || rs1: 4 || rs1: 1 rs1: 1 || rs1: 4 || rs1: 1
@@ -67,6 +70,7 @@
memWrite = false || memWrite = false || memWrite = false memWrite = false || memWrite = false || memWrite = false
branch = false || branch = true || branch = false branch = false || branch = true || branch = false
jump = true || jump = true || jump = false jump = true || jump = true || jump = false
#+end_src


For the operation currently in EX, from where (ID, MEM or WB) should the forwarder get data from for rs1 and rs2? For the operation currently in EX, from where (ID, MEM or WB) should the forwarder get data from for rs1 and rs2?


@@ -74,6 +78,7 @@


At some cycle the following instructions can be found in a 5 stage design: At some cycle the following instructions can be found in a 5 stage design:
#+begin_src text
EX: || MEM: || WB: EX: || MEM: || WB:
---------------------||-------------------------||-------------------------- ---------------------||-------------------------||--------------------------
rs1: 2 || rs1: 4 || rs1: 3 rs1: 2 || rs1: 4 || rs1: 3
@@ -87,6 +92,7 @@


Should the forwarding unit issue a load hazard signal? Should the forwarding unit issue a load hazard signal?
(Hint: what are the semantics of the instruction currently in EX stage?) (Hint: what are the semantics of the instruction currently in EX stage?)
#+end_src


* Question 3 - Benchmarking * Question 3 - Benchmarking
In order to gauge the performance increase from adding branch predictors it is necessary to do some testing. In order to gauge the performance increase from adding branch predictors it is necessary to do some testing.


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