A83: Sv: Sv: Problem with _dispop1a

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A83: Sv: Sv: Problem with _dispop1a

By the way if you were to display the number in reg. a I would do...
 
dispRegA:
    ld    hl,o
    ld    l,a
    jp    _disphl
 
Andreas Hjordt
 
----- Original Message -----
From: Andreas Hjordt
To: assembly-83@lists.ticalc.org
Sent: Thursday, September 07, 2000 9:21 PM
Subject: A83: Sv: Problem with _dispop1a

As far as I _remember_ the number in reg. a determine how many digits to be displayed of the number in op1. That's way reg. a has to be bigger than 0 and lower then 16.
 
Andreas Hjordt
 
 
----- Original Message -----
From: ti-83
To: Assembly-83
Sent: Thursday, September 07, 2000 6:37 PM
Subject: 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
 
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