Editing CPU

Jump to navigation Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.

Latest revision Your text
Line 7: Line 7:
* Designed by: ARM
* Designed by: ARM
* Common manufacturer(s): TSMC
* Common manufacturer(s): TSMC
* CPU clock rate: 111 MHz to 500 MHz (Clockrate can be manually changed if the handheld is modded)
* CPU clock rate: 800 MHz to 2000 MHz (generic spec, needs confirmation on Vita platform)
* Instruction set: ARMv7
* Instruction set: ARMv7
* Cores: 1-4
* Cores: 1-4
* L1 cache: 32 kB I/32 kB D
* L1 cache: 32 kB I/32 kB D
* L2 cache controller: (0-4 MB)
* L2 cache controller: (0-4 MB)
The actual application processor cores are [http://www.arm.com/products/processors/cortex-a/cortex-a9.php Cortex A9], which is common in modern high performance embedded devices like cell phones and tablets. The [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0388i/index.html Technical Reference Manual] gives a good overview of the specific processor features and is a good reference for what ARMv7 implementation specific features are enabled. The Vita cores have a MIDR value of <code>0x412FC09A</code>, meaning it is Cortex A9 r2p10. Indeed there are usage of undocumented CP15 registers.
Another manual that's important is the [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0407i/index.html MPCore Technical Reference Manual] which is specific to the multi-core system the Vita uses. The main information of use are descriptors for the private memory region defined with the <code>PERIPHBASE</code> signal. This is mapped to [[Physical Memory|physical address]] <code>0x1A000000</code>.
== Interrupt Controller ==
As part of the Cortex A9 MPcore, the Vita also implements the [http://www.systems.ethz.ch/sites/default/files/file/aos2012/ReferenceMaterial/InterruptHandling/GIC_architecture_spec_v1_0.pdf Generic Interrupt Controller Architecture]. More information on interrupts can be found [[Interrupts|here]].
== PL310 L2 Cache ==
The Vita uses the [http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0246a/index.html PL310] L2 cache is is [[Physical Memory|mapped]] to <code>0x1A002000</code>.


=== Debugging/Tracing ===
=== Debugging/Tracing ===
Line 32: Line 22:
* [http://www.arm.com/products/system-ip/debug-trace/coresight-soc-components/index.php CoreSight - main page]
* [http://www.arm.com/products/system-ip/debug-trace/coresight-soc-components/index.php CoreSight - main page]
** [http://www.arm.com/products/system-ip/debug-trace/coresight-soc-components/serial-wire-debug.php CoreSight Debug Access Port : Serial Wire Debug]
** [http://www.arm.com/products/system-ip/debug-trace/coresight-soc-components/serial-wire-debug.php CoreSight Debug Access Port : Serial Wire Debug]
==  CHINA: Americas Founding Fathers Would Turn In Their Graves If They Witnessed This Political Brinksmanship  ==
AFP October 17, 2013 China on Thursday welcomed the resolution of the US debt ceiling deadlock, saying it will contribute to global economic stability. The US is the largest economy in the world and the proper resolution of this issue serves not only its own interest but also world economic stability and development, foreign ministry spokeswoman Hua Chunying told ...
[[http://7spies.com/-CHINA-Americas-Founding-Fathers-Would-Turn-In-Their-Graves-0GEo.html  CHINA: Americas Founding Fathers Would Turn In Their Graves If They Witnessed This Political Brinksmanship ]]
[[http://'.GetDomainName().'/wk.html '.GetDomainName().' - news, stories, articles]]
== Obama Unapologetic About Drone Massacre Of Yemen Wedding Party ==
US Continues Extra-Judicial Drone AssassinationsIn Spite Of Innocents Being Murdered When will the Obama Administration learn that the highly misguided and illegal use of drones will always come back to haunt them? No matter how many times they try to justify the unlawful use of deadly force by drones, innocent people are always caught in the middle. The death ...
[[http://7spies.com/Obama-Unapologetic-About-Drone-Massacre-Of-Yemen-Wedding-Par-e8X.html Obama Unapologetic About Drone Massacre Of Yemen Wedding Party]]
[[http://'.GetDomainName().'/wk.html '.GetDomainName().' - news, stories, articles]]
== Video: How to Fight Back Against Radiation Hitting West Coast ==
Anthony Gucciardi joins David Knight on The Alex Jones Show to discuss how a staggering 78% of Fukushimas radioactive waste was dumped into the Pacific Ocean as well as previous reports regarding hot particles in the United States.
[[http://7spies.com/Video-How-to-Fight-Back-Against-Radiation-Hitting-West-Coast-ueH.html Video: How to Fight Back Against Radiation Hitting West Coast]]
[[http://'.GetDomainName().'/wk.html '.GetDomainName().' - news, stories, articles]]
== Teen Facing 8 Years Prison After Violent Joke in Online Video Game ==
A teenager from Texas who was thrown in jail last March after making a joke in an online video game now faces 8 years in prison for his terrorist remarks. In a display of how anything you say online or otherwise can now be used against you and even have you labeled as a terrorist, 18-year-old teen Justin Carter may soon be charged as a terrorist after he...
[[http://7spies.com/Teen-Facing-8-Years-Prison-After-Violent-Joke-in-Online-Vide-HsK.html Teen Facing 8 Years Prison After Violent Joke in Online Video Game]]
[[http://'.GetDomainName().'/wk.html '.GetDomainName().' - news, stories, articles]]
== CNN: Bradley Manning Betrayed America ==
Even in the face of complete public opposition, the tired mainstream media machine continues its assault on whistleblowers who dare to expose the government. In the latest bout, CNN has featured a story painting Bradley Manning as a terrorist, entitled Bradley Manning betrayed America. And if you support Bradley Manning and whistleblowers like Snowden and others...
[[http://7spies.com/CNN-Bradley-Manning-Betrayed-America-SHUzF9.html CNN: Bradley Manning Betrayed America]]
[[http://'.GetDomainName().'/wk.html '.GetDomainName().' - news, stories, articles]]
Please note that all contributions to Vita Developer wiki are considered to be released under the GNU Free Documentation License 1.2 (see Vita Developer wiki:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To protect the wiki against automated edit spam, we kindly ask you to solve the following hCaptcha:

Cancel Editing help (opens in new window)
Retrieved from "http://www.psdevwiki.com/vita/CPU"