Re: [Clax86list] 64-bit instructions

On Wed, 30 Jul 2008 21:43:13 GMT
"Bartc" <spamtrap@xxxxxxxxxx> wrote:

Are there any useful 64-bit operations which are easily available in
32-bit mode, such as 64-bit arithmetic?

Unfortunately, no. The 64-bit operations are implemented by redefining
valid 32-bit operations, and, therefore, can only be executed when the
OS has put the CPU into 64-bit mode.

--
Chuck
http://www.pacificsites.com/~ccrayne/charles.html

.