[A89] Re: sound
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[A89] Re: sound
I've tried using pokeIO. I realize that it is necessary to
use it or to declare the ptr as volatile. My question is
what do I need to write to 0x60000E to turn on and off the
link port wires to generate sound.
---- On Wed, 8 May 2002, Sebastian Reichelt
(SebastianR@gmx.de) wrote:
>
> | I read in J89hw.txt that the address for direct link port
> | access on the 89 is $60000E. Is there some way I can use
> | this address in TIGCC to generate sound? I've tried
making
> | a void *ptr=0x60000E and setting bits of *ptr, but I
have'nt
> | been able to get any sound to come out yet. I'm not
quite
> | sure as to what bits I need to set to turn on and off
the D1
> | and D0.
>
> I'm not quite sure about your actual question, but you
should take a look at
> pokeIO_bit in the latest beta on http://tigcc.ticalc.org/.
It really is
> necessary so the compiler doesn't move the operation out
of a loop.
>
> Sebastian Reichelt
>
>
>
>
>
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