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Windows 7: No application compatibility woes for Windows 7 -- yet

12 Dec 2009   #11
Night Hawk

W7 Ultimate x64/W10 Pro x64 dual boot main build-remote pc W10 Pro x64 Insider Preview/W7 Pro x64

I've seen some but only some 32bit drivers actually work on the 64bit 7. Likewise you wouldn't expect 9x 16bit drivers to work on XP, Vista, 7 either.

For the most part drivers(software or device/hardware( are "3rd party" drivers not written by MS or directly under control by MS. It's upto the manufacturer or software company to write drivers and other updates for each new version of Windows not MS there.

The real lame part of all that however is even when a manufacturer dumps one old outdated model let's say a modem(ADSL, Cable) the ISPs will still provide that same specific model even when the last update was seen 5-7yrs. previously and none since! Yet they promote all these new bargains for signing up?

Again that's still all 3rd party responsibilities there to keep things updated within a degree not let things slide year after year.

My System SpecsSystem Spec
12 Dec 2009   #12

Linux CENTOS 7 / various Windows OS'es and servers

Hi Nighthawk
While I agree with you it will STILL be a problem if MS wants to get businesses to switch.

My solution would have been to get the OS developers to work on a Windows like equivalent to "WINE" although to have it built seamlessly into the OS (Ms already has WOW back from the days of Windows XP 64 bit edition -- "Windows ON Windows").

For those that don't know WINE is an application that is used in Linux to actually run Windows executable files directly without using Virtual Machines or needing to run things equivalent to "XP MODE".

As an old OS developer (worked on IBM MVS 360 / 370 systems) it actually isn't too difficult to build in a "State switcher" into the OS kernel (or "Nucleus / Supervisor" as we called it back then).

This could flip the OS state to 32 bit mode which could run the XP code for that particular application. Not too difficult. It would then switch the machine state back to 64 bit operation.

A problem however is that there's no "Privileged" state in Intel CPU's.

To make this type of stuff work in the old MVS OS you had to run a nucleus / supervisor privileged instruction to change a bit in what was called the PSW (Program Status Word) -- a special register which contained the address of the current instruction and its state - normal Application mode - or Privileged mode).

This could however be implemented without too much of a problem via some code built in to the windows kernel itself.

This feature could perhaps be disabled for those that didn't need it so not necessarily overcomplicating or bloating the OS.

My System SpecsSystem Spec

 No application compatibility woes for Windows 7 -- yet

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