Hi,

On Fri, May 10, 2013 at 3:06 AM, Jim Michaels <jmich...@yahoo.com> wrote:
>
> xp support will be phased out next year (2014).

Yes, in case you haven't noticed, they want everyone to upgrade.

> there is support in windows 7 "xp mode" (via a virtual machine called
> microsoft virtual pc) for win7ult.

Not meant for home users (minimal graphics support), not even
officially allowed except on business class editions of Windows.

> works on 64 and 32-bit. emulates 32-bit
> xp, which is the only version that has command.com so it can run djgpp.

I once heard that VPC only supported a Pentium 2. While that's not
exactly painful, it's still worse than a native install. More
important would be speed, but I have no idea how good or bad it fares.

> I need to test and see if my 64-bit box will run djgpp without
> modification... this i something I need to find out, because I would still
> like to do dos development.
> it would be a quick test.
> but my 64-bit box is inaccessible right now.

Yes, all x64 cpus (AFAIK) still support 16-bit real mode and all the
old 8086 instructions. Though most don't really let you do that within
64-bit long mode itself (outside of some form of VT-X).

I still occasionally run FreeDOS in Win7 64-bit under VirtualBox. More
often is DOSEMU under 32-bit (Lucid) Puppy Linux, thanks to V86 mode.
And even more often I use native FreeDOS on bare metal. They all have
different advantages, though honestly a native install (or even USB
via RUFUS) is more accurate and pleasant to use for most things.

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