I am wondering why this code fails to produce a line. Could someone help me? _main: jsr flib::zap_screen move.w #99,-(sp) move.w #120,-(sp) jsr tios::MoveTo add.l #4,sp move.w #190,-(sp) move.w #239,-(sp) jsr tios::DrawTo add.l #4,sp jsr flib::idle_loop rts