On Nov 15, 2007 10:52 AM, Frank Cox <theatre@xxxxxxxxxxx> wrote: > > > Is there any disadvantage to this patch? > > If it works as designed, no, it should be a great advantage. It's tricky (it is very intrusive on the processor; for a short moment paging is disabled) and AMD doesn't recommend it. There may be security issues. That said, it works, and VMWARE uses it too. https://www.x86-64.org/pipermail/discuss/2003-April/003263.html > I didn't expect to see a 13x slowdown. 16bit (non-protected) mode needs to be emulated on x86-64. DPMI needs not. I guess that PowerBasic is not a DPMI application then. The question is how important the speed is, as most 16-bit programs were written at a time when CPUs were natively slower than the emulation speed now! Bart - To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
