Wednesday, June 20, 2018
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
New European Rules Could Make Google, Facebook and Others Responsible For Copyrighted Content On their Services
Verizon, Sprint, AT&T and T-Mobile To Stop Sharing Cell Phone Location Data
Hackers Breached Satellite, Defense Companies
Benchmarks With the 32-core AMD Threadripper Appear Online
Facebook Offers More Tools To Video Creators
Western Digital Adds 12TB Western Digital Purple Drive to Surveillance Portfolio
Toshiba Delivers RM5 vSAS Series SSDs Targeting SATA Applications
Noctua launches CPU Coolers for LGA3647 Intel Xeon Platforms
Active Discussions
Which of these DVD media are the best, most durable?
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
Help make DVDInfoPro better with dvdinfomantis!!!
menu making
Optiarc AD-7260S review
cdrw trouble
 Home > News > Consumer Electronics > PSP not...
Last 7 Days News : SU MO TU WE TH FR SA All News

Thursday, March 31, 2005
PSP not working at full power?

In the Game Developers Conference held in San Francisco, CA, Sony Computer Entertainment America organized a presentation of the PSP, its hardware specs, software layer information, etc. The demonstration however, showed that the device does not perform as was initially announced.

The PlayStation Portable (PSP) has simple hardware architecture, yet includes many advanced capabilities, which can be used to enhance games. The presentation started off with a system overview, then delved into a number of these features, including: use of the VFPU, advanced graphics techniques, wireless networking, integration with the front-end interface, and power consumption. The session was designed for new PSP developers. The main speaker was Mr. Mark DeLoura, Manager of Developer Relations, Sony Computer Entertainment.

The PSP CPU operates at 222MHz and not at 333MHz, as was reported in its specifications sheet. In addition, the OS kernel occupies 8MB of the main memory on the device (32MB), which is a very high utilization. There is no doubt that the PSP cannot perform to full potential yet.

Regarding the 222MHz speed for the core CPU, Sony explained that it was no use to push the device to its 333MHz limit, since the current typical bus speed of the PSP is not higher than 111MHz. Working at 333MHZ would require an increase in the bus speed to 166MHz. The 222MHz is a provisional specification, and there is a possibility of increasing it to 333MHz in the future.

Although the official explanation from Sony on the CPU clock was not convincing, it is clear that the purpose of the low operating frequency is an effort towards reducting power consumption. The Lithium Ion battery of 1,800mAh powering the PSP offers 4-6 hours operation at 222MHz. In addition, the attached UMD drive, the high luminance settings, the wireless LAN support as well as the liquid crystal display are factors that impact highly on power consumption.

Regarding the PSP's OS, the biggest issue is that the kernel itself occupies 8MB of memory. This is a huge amount used for kernel, leaving just 24MB free for the user and of course the game developer.

The reason for occupying such a large chunk for the kernel is that the device will be able to support many different functions. The library layer and drivers for example are relatively large because the PSP basically handles the API base programming model.

The UMD file format was also explained in the GDC. Currently, there is one format for PSP games, another one for UMD Audio, and one for UMD Video. Although there was no mention about any regional code control for PSP games, both UMD audio and video are expected to be digitally controlled.

New DDR2 products demonstrate IDT commitment        All News        Nikon 'leak' revealed digital SLR D50 plans goes live     Consumer Electronics News      PSP: Dead pixels can be exchanged

Get RSS feed Easy Print E-Mail this Message

Related News
End Of An Era For Sony's PSP
Sony Partners With More Game Developers to Expand Independent Game Portfolio for All PlayStation Platforms
U.K Court To Block Torrent Sites
Illegal P2P Music Downloads Dropped in 2012
RIAA Caught Downloading Torrents
Sony Launches UMD Passport Program
Panasonic to Reduce PDP TV Production
Sony To Offer SDK For Playstation Suite
Sony Reduces PlayStation Price
Sony Restores PlayStation Network Services And Music Unlimited Powered by Qriocity Services
Sony Confirms Another Online Security Breach, Releases New PSP and PS3 Packs
PSP System Software Update v6.39

Most Popular News
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2018 - All rights reserved -
Privacy policy - Contact Us .