In article <1et0i2m.owt7vk1gsm9wN%dempson@actrix.gen.nz>,
dempson@actrix.gen.nz (David Empson) wrote:


> Don't forget that the PC Transporter uses an NEC V30 processor, which
> has additional instructions that are also available in the 80186 (and
> later family members).  This may be sufficient to allow Win 3.x to run
> in standard mode.  (I haven't tried myself, so I don't know the answer
> either way.)
> 
> I've encountered other software (such as 4DOS) which claim to require an
> 80286, but which also work on an 80186, or an NEC V20 or V30.

No, Windows 3.0 was 3 different pieces of software.   It had a Real Mode
version.  This is what is running on a PC Transporter.   It runs in 640K
and would work on a PC/XT. 

It had a Standard Mode version.  This ran on 286s.  You needed at least 1
meg of RAM to run this.

It had a Enhanced Mode version.   This ran on 386s.   You needed at least
2 megs of RAM for this.

Windows 3.1 dropped the Real Mode support.   It ran on 286s and up.

Win95 dropped the Standard Mode support.   It required a 386 or higher to run.

Dan