I suspect this is the format for AGI V1 sound resources as well. It is
currently implemented by splitting getNextNote() to getNextNote_v2() and
getNextNote_v1(). Since the V1 format consists of simple register values
to the sound chip in PCjr, this could probably be made more cleanly by
refactoring the code to resemble the chip more closely, so that its state
is updated by writing to the registers.
The idea here is that if two voices are generating the same tone,
the square wave generator should be in sync so that the wave forms
amplify each other, rather than cancelling each other out.
Because chanGen() gets called very early, and sometimes it crashes
ScummVM as soon as the game starts. Actually, it's probably enough to
initialise a couple of fields in _tchannel[], but I figured it
couldn't hurt to clear all of _channel[] and _tchannel[].
svn-id: r52741
FR #2813133: "AGI: Proper Tandy 3-Voice/IBM PCjr Sound Support".
Add proper Tandy music. Heavily based on NAGI source, thus attached
its X11 license.
To run it now use -e pcjr. Old one is still default for adlib but
most likely will be changed in the future.
Also lied ground for further separation of different sound generators.
svn-id: r49755
Johannes Schickel
Matthew Hoops
Jussi Pitkanen
eriktorbjorn
strangerke
Willem Jan Palenstijn
Eugene Sandulenko