Ross McKay wrote: > One restriction I know (knew?) of is that you can't run DOS programs > under Wine on 64-bit, but then... why?
I could be wrong, but I'll bet anything that Wine made use of the now defunct vm86 component of the x86 architecture. That allowed the CPU to implement a "virtual machine" with limited memory to appear as a separate process to the operating system, and is how most DOS instances on 32-bit OS's were implemented prior to the x86_64 architecture. On its way to being phased out, you can now only use vm86 if you boot the CPU in 32-bit protected mode, so the way DOS is run now is via VM software like KVM, VMWare, Xen, etc. Not sure how Wine was implemented though, so I could be very wrong :) James -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
