Re: [stella] New Music Effects

["Paul Slocum" <paul-stella@xxxxxxxxxxxxxx>]

> How much overhead does adding the music driver and a short sequence like 
> this add to a game?

Very little except for ROM space.  It varies a bit depending on which 
features are used, but my music driver generally uses 2-3 bytes of 
persistent RAM plus 3-4 temp RAM locations and I think a max of about 400 
cycles (5 lines) per frame.  You just call the driver once per frame in 
Vblank or Overscan.

> Is it low enough to consider using for 4K games or is it really only 
> useful for 8K+ games?

Well if you can leave enough free space it can be done.  Combat Rock is 
4k.  :o)  The driver and music data in the demo I posted are 700 bytes 
total, but it's an older version of the driver.  The latest version of the 
driver which represents the music data in a more efficient form could 
probably do the same demo in about 400 bytes.

-Paul

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