A83: Problem with _dispop1a


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A83: Problem with _dispop1a



I'm making a game, and I use the code wich is under. It displays the register's value a on the screen at the position of penrow, pencol, but when a is 0, the TI returns an UNDERFLOW error and breaks the program. Does someone could say me why and how can I do to display the value of a on the graphic screen with this routine or with another ?
 
call _setxxop1
ld de,19*256+68
ld (pencol),de
call _dispop1a
ret
 
Thanks

Ti-83
 
Le monde de la TI-83
http://www.ti-83.fr.st
ti-83@fr.st

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