+l_nl:
+ pop r1
+ cmpi r1, 0
+ brnq l_ln1
+l_ln0:
+ ldis r1, 1
+ push r1
+ ldis r1, 0xc0 ; jump to second line
+ call+ lcd_command
+ call delay5ms
+ br+ loop
+
+l_ln1:
+ ldis r1, 0
+ push r1
+ ldis r1, 0x80 ; jump to first line
+ call+ lcd_command
+ br+ loop
+