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

Re: Raycasting 3D demo disk



BLuRry wrote:
great to add some DAC522 sound effects - totally blow people away. As I
have no knowledge of Mockingboard programming (or a Mockingboard), I'll
take you up on the offer. I will add some keyboard support, but don't
expect too much.


:-)  good stuff.  I'm not expecting miracles, especially not for free.


As for the mockingboard bit, it is interrupt-driven so it only fires
off when it absolutely needs to.  I'm trying to configure the routine
such that the frequency at which it is triggered is configurable.  The
format of the sound is somewhat mod-like (except no digital samples,
just music data).  I got kinda stalled because of the game server
(which I needed to bootstrap the test programs to my //e more quickly)
and now because I have a totally other side project going on -- for
which I'll post separately so I don't hijack your thread.  ;-)

I'll let you know when I get the mockingboard routine working, though
it might be a while.

IIRC, the Mockingboard disk contains an interrupt-driven player.  And
the Music Construction Set (not the IIgs version) also generates music
that is played by an interrupt-driven player.

ISTR that the Mockinboard disk version (I think) was even "packaged" to
be used by other programs.

The Mockingboard makes this pretty easy, since it contains *two* 6522
VIA chips, each of which has two timers with interrupt capability!

-michael

NadaNet networking for Apple II computers!
Home page:  http://members.aol.com/MJMahon/

"The wastebasket is our most important design
tool--and it's seriously underused."