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daluca



Joined: 05 Nov 2005
Posts: 86
daluca
hello:
I would like to ask:


-can I install a 32bit OS in a 64bit machine? (windows)
-can I run 16bit aplications in 64bit machines? (real mode)
-can I run 32bit applications on 64bit machines? (with 64 windowsOS)

in general I would like to know about all the compatibilities with

16bit-32bit-64bit

thank's.
Post 23 Mar 2008, 19:36
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mattst88



Joined: 12 May 2006
Posts: 260
Location: South Carolina
mattst88
-yes
-yes, but only with a 32-bit OS
-yes
Post 23 Mar 2008, 19:55
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AlexP



Joined: 14 Nov 2007
Posts: 561
Location: Out the window. Yes, that one.
AlexP
Hmm... Check out "WOW64" on www.msdn.microsoft.com, main Windows resource for programmers.
Post 23 Mar 2008, 20:36
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Jack



Joined: 16 Feb 2005
Posts: 21
Jack
AlexP, you need to remove the "," from your link.
Post 23 Mar 2008, 22:28
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rugxulo



Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)
rugxulo
daluca wrote:

-can I install a 32bit OS in a 64bit machine? (windows)
-can I run 16bit aplications in 64bit machines? (real mode)
-can I run 32bit applications on 64bit machines? (with 64 windowsOS)


1). Yes. I run Vista SP1 32-bit (Home Premium) on my AMD64x2.
2). It runs 16-bit DOS programs fine (either under Vista or real DOS booted from CD).
3). Never tried (as 64-bit Windows ain't free), but yes, you supposedly can. Of course, as mentioned, you can't run 16-bit stuff (even something like DJGPP which uses a 16-bit stub) on a 64-bit OS due to no V86 mode under long mode.

You might also have a fairly hard time finding 64-bit drivers for your 64-bit OS since (at least Windows) they have to be completely rewritten from scratch. So, if you're interested in compatibility (e.g. 16-bit stuff like DOS), you'd better dual boot. Otherwise, you probably won't care (except if you can't find drivers for your peripherals, heh).

The sensible solution might? be to dual boot any ol' Win32 (e.g. XP) and something else like Ubuntu 64-bit edition. Or you can run a 64-bit OS (e.g. Menuet64) under QEMU on Vista 32-bit.
Post 24 Mar 2008, 02:32
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