Feeds

Finding your Pentium II PSN could be a tricky biz

Chip designer says it needs fancy footwork

  • alert
  • submit to reddit

Beginner's guide to SSL certificates

A reader who is a chip architect told us today that finding processor serial numbers (PSNs) on .25 micron Pentium IIs is not necessarily easy. (Story: Unique serial number exists on all .25 micron Intel chips) He said:"The bus multiplier is in that same PIROM [as the serial number] and while there is an interface to the PIROM it isn't accessible without some fancy hardware work. I can confirm your other source is correct [about processor serial numbers being in .25 micron PIIs.]" He added: The serial number and bus multiplier value (among other things) is written into the PIROM after the chip has been bonded out/packaged. The testing unit determines what the speed of the processor is and then writes the serial number information along with bus multiplier into the PIROM. A simple mistake in the test software would give the wrong value to the PIROM bit that allows the serial number to be read by the CPU." Tricky, but not impossible. Let's see what the rest of the week brings. Meanwhile, Intel's competitor, AMD, is keeping remarkably quiet about whether it will use PSNs in the future. It does have a statement on its Web site saying the idea itself is not a particularly bad thing. (Story: AMD wavers over chip security ID) We suppose it's waiting until all the fuss dies down before it makes its announcement. ®

Internet Security Threat Report 2014

More from The Register

next story
Bladerunner sequel might actually be good. Harrison Ford is in it
Go ahead, you're all clear, kid... Sorry, wrong film
Euro Parliament VOTES to BREAK UP GOOGLE. Er, OK then
It CANNA do it, captain.They DON'T have the POWER!
Musicians sue UK.gov over 'zero pay' copyright fix
Everyone else in Europe compensates us - why can't you?
I'll be back (and forward): Hollywood's time travel tribulations
Quick, call the Time Cops to sort out this paradox!
Megaupload overlord Kim Dotcom: The US HAS RADICALISED ME!
Now my lawyers have bailed 'cos I'm 'OFFICIALLY' BROKE
Forget Hillary, HP's ex CARLY FIORINA 'wants to be next US Prez'
Former CEO has political ambitions again, according to Washington DC sources
prev story

Whitepapers

10 ways wire data helps conquer IT complexity
IT teams can automatically detect problems across the IT environment, spot data theft, select unique pieces of transaction payloads to send to a data source, and more.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
How to determine if cloud backup is right for your servers
Two key factors, technical feasibility and TCO economics, that backup and IT operations managers should consider when assessing cloud backup.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Choosing a cloud hosting partner with confidence
Download Choosing a Cloud Hosting Provider with Confidence to learn more about cloud computing - the new opportunities and new security challenges.