Is MS-DOS, PC DOS and DR-DOS vintage enough to count?

On 07/31/2016 12:59 PM, jim stephens wrote: > The booted system on Windows 95 is real mode dos, and that allows all > of the dos boxes you spawn to share the same virtual to physical > address space. > Windows 98 still did the same trick, but would only map a single > physical address space to the physical space. There was a collision > because of the fact that they never booted and ran a base dos box, > but actually booted to PE big real and ran from there. That's why Redmond gave us VxDs ;) Seriously, I think that this was inevitable. MS was starting to get the hint that there was a demand for security and isolating applications was a good start. The DOS that boots Win98 is still a fine version of MS-DOS. The GUI, not so much. --Chuck