507 		enum con_scroll dir, unsigned int lines)  in mdacon_scroll()  argument
511 	if (!lines)  in mdacon_scroll()
514 	if (lines > c->vc_rows)   /* maximum realistic size */  in mdacon_scroll()
515 		lines = c->vc_rows;  in mdacon_scroll()
520 		scr_memmovew(mda_addr(0, t), mda_addr(0, t + lines),  in mdacon_scroll()
521 				(b-t-lines)*mda_num_columns*2);  in mdacon_scroll()
522 		scr_memsetw(mda_addr(0, b - lines), eattr,  in mdacon_scroll()
523 				lines*mda_num_columns*2);  in mdacon_scroll()
527 		scr_memmovew(mda_addr(0, t + lines), mda_addr(0, t),  in mdacon_scroll()
528 				(b-t-lines)*mda_num_columns*2);  in mdacon_scroll()
529 		scr_memsetw(mda_addr(0, t), eattr, lines*mda_num_columns*2);  in mdacon_scroll()