#include <vv_sys.h>

#define GET_VBUF	    0xFE00
#define FP_MAKE(fp, off, seg)   \
((*(((USHORT *)&fp) + sizeof(UINT)/sizeof(USHORT)) = (USHORT) (seg)),\
(*(UINT *)&fp = (UINT)(off)))

void dosv()
{
    VIDIO vr;

    vr.es = 0;
    vr.ax = GET_VBUF;               /*MS Windows Get Video Buffer value   */
    vid_int(&vr, &vr);              /*call MS Windows                     */
    if (vr.es)
    {
	FP_MAKE(_vid_scr.vbufp, vr.di, vr.es);
	VID_ECHO = ON;
    }
}