full Win 64bit support to come?

[gigaman]

In 64-bit mode the CPU have twice the size of the registers (64 bits instead of 32 ), there are a few new instructions as well as some other things that can(!) make 64-bit code more efficient and faster than the 32-bit equivalent.

Yes, some applications may benefit from 64bit code - but I somehow doubt TC is one of them; it doesn't perform any heavy computations, its speed is usually limited either by disk access, or by the user
So, the main advantage of 64bit platform here would probably be bigger addressable memory.

Another reason for running native 64-bit code instead of through WoW64 is that WoW64 is an emulating layer translating 32-bit code to 64-bit code (I think).

No, there's no emulation on x64 platform, the CPU executes the 32-bit code directly. (I think the emulation is performed on IA-64 architecture, i.e. Itanium CPU, but that's rather out-of-question here, I believe.)

[Scyphe]

I googled for the answer and 32-bit code IS emulated through the WoW64-layer. I'm not sure if it's a realtime JIT-engine but it's a fact. The 32-bit part of the CPU is inactive. An interesting side-effect of this is that a lot of 32-bit code running under Vistas emulation layer is actually faster under 64-bit mode than when running in native x86 mode.

In the end it's really only a matter of "preference" since no real benefits will come from a native 64-bit version at this point in time. Perhaps when Windows 7 arrives and we all have 8Gb RAM or more and opti-core CPU's. It's also a matter of where the author should spend time, optimizing and developing TC7+ or waste time making 64-bit compiles.

[Compfucius]

Hi folks,


I discovered today this limitation, I was searching like a crazy but didn't realize it was TC who cause all that headache...

I'm surprised because last post is dated from october 2006... Am I in a twilight zone?

I'm working with Vista64 Business with TC7.50a