#include "ded.h"
#include "char.h"
#include "ter.h"

/************************************************************************
 *                                                                      *
 *                      copyright Richard Bornat 1981                   *
 *                                                                      *
 ************************************************************************/

/************************************************************************
 *                                                                      *
 *              case 0 - no hardware except rollup                      *
 *                                                                      *
 ************************************************************************/

scr0_up(r1,r2,line)
register int r1, r2;
char *line;
 {  /* only strategy - scrolldown(0:r1), rollup, scrolldown(r2:FOOT)  */
    if (line==0) /* just report cost */
      return(1+scrolldown(0,r1,(char *)0)+scrolldown(r2+1,FOOTROW,(char *)0));
    else /* do it */
     {  if (r1!=0) scrolldown(0, r1, "");
	rollup();
	scrolldown(r2, FOOTROW, line);
	return;
     }
 }

/* ARGSUSED */
scr0_down(r1,r2,line)
register int r1, r2;
char *line;
 {  if (line!=0) editerror("scr0_down called in earnest");

    return(32767); /* as large as possible */
 }