;================================================================
;
; 	Voice x waveform bits :
;	0	(1)		$01		Gate bit					 	
;	1	(2)		$02		Sync Osc x with Osc y 
;	2	(4)		$04		Ring Mod Osc x with Osc y 
;	3	(8)		$08		Test Bit: disable Osc x
;	4	(16)	$10		Triangle waveform 				($90 pulse)	
;	5	(32)	$20		Sawtooth waveform 				($a0 pulse)
;	6	(64)	$40		Pulse waveform 					($c0 pulse)
;	7	(128)	$80		Noise waveform 
;
;	Waveform and Pulse note commands (on voice 3: 
;	
;	00-7f	- 	No change, no pulse 
;	80-87	-	No change
;	89		- 	Noise + pulse 
;	8b		- 	Noise + pulse and frequency of noise audible
;	90-cf	- 	bit 7: pulse note (bit 7), otherwise wave forms as above 
;			- 	bit 3: set frequency of standard waveform as well (otherwise will be set to 0)
; 	d1-df	-   special presets (reserved)
;
; 				D1 		set pulse waveform to $80 and fix noise frequency at $ffff, while allowing pulse frequency to change 
; 				D2		set pulse waveform to $10 and fix at current frequency, while allowing pulse frequency to change 
; 				D3		set pulse waveform to $20 and fix at current frequency, while allowing pulse frequency to change 
; 				D4		set pulse waveform to $40 and fix at current frequency, while allowing pulse frequency to change
; 				D5		set pulse waveform to $10 and fix pulse at current frequency, while allowing waveform frequency to change 
; 				D6		set pulse waveform to $20 and fix pulse at current frequency, while allowing waveform frequency to change  
; 				D7		set pulse waveform to $40 and fix pulse at current frequency, while allowing waveform frequency to change 

;
;======================VOICE PULSE INSTRUMENT ===============================	
; Effects:
;
; Sharpness:
; To change the sharpness of the waveform resulting from gate on/off pulse notes, the sustain level can be used
; Sustain of $f is the loudest, deeper, and more full bodied, with a small plateau when declining from the max attack phase (with 0 decay)
; On the other hand, the waveform is more like a saw tooth (more like sharp sharkfin) when using low sustain levels. 
; So in essence, sustain of 0 is the sharpest and the full body and loudness increases all the way up to max sustain of $f. 
;
; 
; Filters can be used as normal, in a way, but note there is some grainy effect on the overall sound. 
; Filter resonance can be used to make a pulse sound louder, at the cost of more graininess. So, resonance of 15 is loudest (depending on filter pass settings), but most grainy. 
;
; Changes to Release corrupt the waveform, the release should be set to 0, so it reaches 0 at the fastest rate when gate is turned off. 
; Changes to Attack are pretty useless. The only value other than 0 that is audible is 1, basically lowering the frequency of the peeks. 
; Changes to Decay cause immediate issues as well, and has to be kept at 0 as well.
;
; To boost amplitude, performing the pulse on multiple channels at the same time can be done: the frequency of voice 3 is leading!	
; note that the lower frequencies of the pulse take longer to complete and may delay the next frame of the SID settings !