Old MS-DOS & WIN Software

[Eric J Korpela]

On 12/2/05, Jim Leonard <trixter at oldskool.org> wrote:
>
> Fred Cisin wrote:
> > DEBUG (the most useful program to ever come from Microsoft) is STILL
> > included in Windoze, even XP.
>
> Yep, I get funny looks from others when I use debug to determine what
> video
> chipset is in unknown machines so I know what updated drivers to download.
> (Seriously -- in XP, do start->run->cmd then type debug then type "d
> c000:0000"
> enter then enter again.)


Is XP guaranteed to map 0x000c0000 physical  into c000:0 virtual in a VM86
session?  Does it keep the whole ROM space mapped to its corresponding
physical addresses?  It certainly has to hide the video RAM...   I would
have expected it to replace the ROM with one of its own as well.

Eric