Old MS-DOS & WIN Software

Tue Dec 6 18:35:05 CST 2005

On 12/6/2005 at 2:47 PM Eric J Korpela wrote:

>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.

I don't believe XP does anything more than copy the ROM into a bank of RAM
and then map the RAM.  

Cheers,
Chuck