64-bit Technology News

Developments in central processing unit architecture have enabled CPU manufacturers to integrate multiple processors, called cores, into a single unit. Computers have been using 32-bit registers for over a decade, but modern CPU cores utilize 64-bit architecture in order to make use of higher RAM capacities. Determining whether to go with a 32-bit or 64-bit multi-core CPU, however, depends on your needs.

Incident responders and forensic investigators need to be careful when using 32-bit tools to examine file system artifacts on 64-bit Windows. Christian Wojner documented the issue in a paper titled The WOW-Effect. He demonstrated how the WOW64 File System Redirector built into 64-bit Windows transparently redirects 32-bit tools’ access to core OS directories and registry values. This is likely to confuse forensics personnel performing live analysis of the system.

Learn about 32 and 64-bit data types, platform version info and multiplatform dbExpress in Delphi XE2. 31 Days of RAD Studio XE2 Video Tutorials - Day 2 Tutorial. See more at http://www.embarcadero.com/31-days-of-december

In 386 ASM it was possible to modify the lower 8-bits of AX without affecting the upper 8-bits of AX, by addressing these bit-ranges as AL or AH, respectively. And so one might have thought that one could also modify the lower 32-bits of the newer 64-bit registers such as RAX, RBX, RSI, etc, without affecting their upper 32-bits... by addressing them as EAX, EBX, ESI, and so on...

In this tutorial we'll look at the left and right shifts in the MMX instruction set. It's all pretty straight forward. There's a whole bunch of instructions so I've made a table similar to the one from the addition and subtraction tutorial.

A: You now have the choice to use the 32-bit or 64-bit version of most Windows OSs today (except for the latest server OS, Windows Server 2008 R2, which is now exclusively 64-bit). The reasons to go 64-bit include greater access to memory for 64-bit applications, access to more than 4GB of physical RAM (although often systems only see around 3GB because other devices use up the memory address space), and improved security capabilities. However, a common question is, does the 64-bit version actually use more memory than the 32-bit counterpart?

In this tutorial we will introduce the idea behind what is one of the most powerful advancements in all of CPU history. It's misunderstood and largely unused. In fact it's almost entirely unknown. If you master this topic, no C++ optimising compiler in our lifetime will come close to the speeds you can hand code Assembly!

ARMv8 will succeed ARMv7, which is the foundation for current processors such as the Cortex-A9 and Cortex-A15. What makes ARMv8 special is the addition of a new "A64" 64-bit instruction set, which will enable the company to move much more aggressively into the server and enterprise computing space.

At its ARM TechCon 2011 conference, UK chip developer ARM has let the cat out of the bag: A64 will be the name given to the 64-bit version of the ARM instruction set. With all the major Linux distributions currently targeting the ARM architecture, the official arrival of the 64 bit version of the instruction set will add an extra level of to their development process.

First ever 64-bit ARM CPU demonstrated at ARM Techcon 2011. You can also see this video with the presentation slides (webcast) at http://j.mp/u2nvv0

ARM launches the 64bit ARMv8 Architecture. Here's my interview with ARM's CTO Mike Muller on the day of the announcement.

ARM Holdings, the British company behind the popular ARM processor architecture used in more than 15 billion mobile devices, announced this week that the newest version of the ARM architecture will add 64-bit processing for the first time ever.

Shortly after ARM announced its next-generation v8 processors architecture with support for the 64-bit instruction set, AMCC has demoed the first chip to be built using this core and which is destined to make its appearance in servers as soon as 2012.

SANTA CLARA, CA, USA – OCT.27, 2011– ARM today disclosed technical details of its new ARMv8 architecture, the first ARM architecture to include a 64-bit instruction set. ARMv8 broadens the ARM architecture to embrace 64-bit processing and extends virtual addressing, building on the rich heritage of the 32-bit ARMv7 architecture upon which market leading cores such as the Cortex™-A9 and Cortex-A15 processors are built.

ARM has just disclosed the technical of the ARMv8 architecture (to selected partners), featuring 64-bit instruction set support, extended virtual addressing, and backwards-compatible 32-bit support, so that software designed for ARMv7 (Cortex-A family) cores will run on the ARMv8 architecture.