[A83] Re: moving sprites


[Prev][Next][Index][Thread]

[A83] Re: moving sprites




>
>I thought you did something like this:
>
>    call abc
>    call abc2
>
>abc:
>    push af
>    push bc
>    push de
>    push hl
>    ret
>abc2:
>    pop af
>    pop bc
>    pop de
>    pop hl
>    ret
>
>Next time I'll read better ;-)

That will crash your calculator:  when you call a routine, the pc is pushed
onto the stack.  if you pop af at the beginning of a routine that you call,
you pop of the pc and when you ret it will jump to a random place.


--------------------------------
Joe Pemberton
http://tiworld.calc.org
--------------------------------


_____________________________________________
Free email with personality! Over 200 domains!
http://www.MyOwnEmail.com