Start64!Let’s say you have this VC++ project (or maybe more) targeting a 64-bit platform (x64 or IA64). You have the sources, everything is set. You build the solution and your project is skipped. You try again, maybe do a rebuild. The project is still skipped. You check the solution’s configuration manager, and the project is indeed checked for building. What could be wrong?

Breaking Platform Limitations

2012-Mar-01 | Tags: memoryprogramingwow64

Start64!Engineering has done a yeoman’s job of delivering an almost feature complete 64-bit compatible compiler and runtime platform - One of the innovative new features in the PowerBuilder 12.5.1 release is its ability to deploy PowerBuilder .NET code to run in 64-bit mode on 64-bit Windows platforms.

Start64!We've finally made it to the ultra powerful SSE. I'm going to tackle all versions of SSE at once since they can collectively be viewed as a single ridiculously flexible instruction set. In this tutorial we're just doing theory. Looking at the registers and a little of the history of the instruction set. We'll also look at how C++ uses SSE registers to pass parameters...

Start64!In this tutorial we'll finish up looking at MMX. We'll examine how to get the remaining comparison operations from the "PCMPGT" and "PCMPEQ" to that are supplied.

Start64!In this tutorial we'll look at all the remaining MMX instructions. They are Boolean and Comparison instructions. The Boolean instructions are very easy to grasp but the comparisons require a little practice (practise?).

Start64!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.

Start64!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.

Start64!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

Start64!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...

Start64!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.

Start64!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?

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