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Difference between revisions of "SCUMM/V0/Maniac Mansion Apple II"

Update with a little more AppleII speaker info from tobigun.
(→‎The Sound Resources: Whoops I forgot to preview :()
(Update with a little more AppleII speaker info from tobigun.)
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== Introduction ==
== Introduction ==
Maniac Mansion for the Apple II produced sound effects via its internal speaker and had no music.
Maniac Mansion for the Apple II produced sound effects via its internal speaker and the only music played is Razor/Sid's piano track.
It appears that not all sound effects were used in the game, this is noticeable when running the game through an emulator.
 
However these un-used sound effects still appear in the resources. A speculative guess would be that perhaps they  
It appears that not all sound effects were used in the game, this is noticeable when running the game through an emulator, of particular note is the lack of introduction audio.
were disabled because they did not sound right through the speaker.
 
However these un-used sound effects still appear in the resources.  
 
A speculative guess would be that perhaps they were disabled because the AppleII engine was unable to parse the sound resources synchronously, during playback the engine would pause and poll for keyboard input to stop the audio.


== The Sound Resources ==
== The Sound Resources ==
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==The Internal Speaker==
==The Internal Speaker==


The speaker only had the functionality to emit a click as a square wave (when memory location $C030 is referenced).
The speaker only had the functionality to emit a click as a square wave (when memory location C030 is referenced).
   
   
The duration and frequency of the sound could be managed by the use of loops controlling the references to $C030.
The duration and frequency of the sound could be managed by the use of loops controlling the references to C030.