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From: Zootal on 25 Jan 2008 00:50
So, here is a question - I'm running XP64 (yeah, still...). I can't run any
of my 16 bit apps. However, today I installed VirtualPC2007, and installed
Win2000. From there, 16 bit apps work. Why? What is it about XP64 that 16
but apps don't run, yet I can run them from a virtual pc running in XP64?


From: Colin Barnhorst on 25 Jan 2008 01:04
The addressible range of x64 requires greater than 16bits so 16-bit software
cannot run. Since the Win2000 vm is a 32-bit system the 16-bit apps can
work.

"Zootal" <msnews(a)zootal.nospam.com> wrote in message
news:ul%23rrYxXIHA.5208(a)TK2MSFTNGP04.phx.gbl...
> So, here is a question - I'm running XP64 (yeah, still...). I can't run
> any of my 16 bit apps. However, today I installed VirtualPC2007, and
> installed Win2000. From there, 16 bit apps work. Why? What is it about
> XP64 that 16 but apps don't run, yet I can run them from a virtual pc
> running in XP64?
>

From: Tom Ferguson on 25 Jan 2008 01:38
To put it another way, neither XP64 nor Vista 64 include a
Windows-on-Windows (WoW) 16 system that would provide the support needed for
16 bit applications to run on the 64 bit OS. They do include a WoW 32
system. VPC 2007 or similar provides support.

Tom
MSMVP 1998-2007

"Zootal" <msnews(a)zootal.nospam.com> wrote in message
news:ul%23rrYxXIHA.5208(a)TK2MSFTNGP04.phx.gbl...
> So, here is a question - I'm running XP64 (yeah, still...). I can't run
> any of my 16 bit apps. However, today I installed VirtualPC2007, and
> installed Win2000. From there, 16 bit apps work. Why? What is it about
> XP64 that 16 but apps don't run, yet I can run them from a virtual pc
> running in XP64?
>

From: jorgen on 25 Jan 2008 01:45
Tom Ferguson wrote:
> To put it another way, neither XP64 nor Vista 64 include a
> Windows-on-Windows (WoW) 16 system that would provide the support needed
> for 16 bit applications to run on the 64 bit OS. They do include a WoW
> 32 system. VPC 2007 or similar provides support.
>
> Tom
> MSMVP 1998-2007
>

To add a bit. If Microsoft wanted, they could make such a subsystem.
Both amd and intel has support for it
From: S.SubZero on 25 Jan 2008 14:04
On Jan 24, 10:45 pm, jorgen <na(a)invalid> wrote:

> To add a bit. If Microsoft wanted, they could make such a subsystem.
> Both amd and intel has support for it

To add a bit more, Microsoft could choose to support CP/M apps too.

WHERE IS THE BACKWARDS COMPATIBILITY MICROSOFT??!

Sometimes ya just gotta let to. 16-bit was good while it lasted, now
it's time to go.
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