SPR_2Polygon (...); / * Various sprite commands * /
          SPR_2NormSpr(...);              /*                                                                    .
                          .
                          .

          SPR_2CloseCommand (); / * Close command writing * / 

          SCL_DisplayFrame (); / * Wait for V-BLANK interrupt * /
                                          / * Display sprite and scroll * /
     }
}

−V blank processing routine (source file different from the above main) − 

#include <machine.h>
#include "sega_spr.h"
#include "sega_scl.h"

#pragma  interrupt(VbStart)
#pragma  interrupt(VbEnd)

void VbStart(void)
{
     SCL_VblankStart (); / * V blank start VDP interrupt processing * /
             -------- / * Other V blank start processing * /
}

void VbEnd(void)
{
     SCL_VblankEnd (); / * V blank end VDP interrupt processing * /
             -------- 
}