PDA

View Full Version : Why 32bits OS doenst work on 64bits CPU?

Episodio1
19th August 2005, 02:27
Why 32bits OS doesnt work on 64bits CPU?

Different micro-instructions?
Sirber
19th August 2005, 03:02
32bit OS does work on 64bit CPU :o

Just look at me ;)
Doom9
19th August 2005, 09:37
depends on the CPU of course. x86 compatible 64 bit chips from AMD and Intel are 32 bit compatible. Other 64 bit processors used primarily for Unix workstations and servers, do not have this capability so the appropriate OS has to be used. The reason is effectively the instruction set of a CPU.
Joe Fenton
20th August 2005, 05:26
The 32bit OS still works on them... with an emulator. :D