margin            931 dev/ic/vga.c   		int margin = scr->pcs.type->ncols * 2;
margin            936 dev/ic/vga.c   		if (scr->vga_rollover > vga_scr_end + margin) {
margin            946 dev/ic/vga.c   		if (p < margin)
margin            948 dev/ic/vga.c   		if (p > st - margin)