Whenever i input code which calls the mircoprocesser these errors occure
void VGAScreen (){
union REGS r;
r.h.ah = 0;
r.h.al = 0x13;
int86(0x10, &r, &r);
return;
\\error C2079: 'r' uses undefined union 'REGS'
\\error C2224: left of '.h' must have struct/union type
\\error C2224: left of '.h' must have struct/union type
\\warning C4013: 'int86' undefined; assuming extern returning int
So how do i make it so M$ compiles without errors????