Can any body know how to control the memory region outside the dos 640 memory..... i suppose that this can't be done ...... if you are saying that we can able to access the outside windows memory .... then one more question?
--- HOW you do the same in windows nt or 2k or xp
by sridhar.r of au,chennai,india
Though I've never worked with them, I understand that FAR and HUGE pointers would do the work for u.
For example to access the VIDEO-RAM memory you declare a far pointer as...
char far *vdumem=(char far *)0xB8000000;
So, work on FAR and HUGE pointers to solve ur problems.
Regards,
Sriharsha
Help everyone you can
Can you send me a sample program Sriharsha
This works with far pointers...(DOS MODE).
[code]
main()
{
char far *vm=(char far *)0xB8000000; /* this is the starting address of the video memory of an CGA or a higher adapter that lies outside the 640k Dos segment */
int i;
for(i=0;i<=3999;i+=2)
*(vm+i)=2;
}
*Frankly, I've never used HUGE pointers.
- Harsha.
where can get a clear idea of these (exploring......_) pointer stuffs
help me!
For pointers, read
http://pw2.netcom.com/~tjensen/ptr/cpoint.htm
Best to use a modern OS - like the ones you suggest, or any unix/linux variant. Then you dont have to worry about small memory limitations, and all those near/far/huge qualifiers on pointer types.
