[sdiy] FW: FW: Communications with voices in a polyphonic synth

[Jerry Gray-Eskue]

Achim correctly pointed out that the code I posted needs to handle Real Time
messages, here is the change:

Thanks Achim

============ Original =============
...
	if(MidiByte >= 0x80)
	{

		// STATUS Byte
		MidiType = MidiByte;

		if (MidiChannel != 0x0f) // Channel 16 for OMNI
		{
			if((MidiByte & 0x0f) != MidiChannel)
			{
				MidiType = 0;
			}
		}
		DataByteCount = 0;

	}
	else
	{
		// Data Byte
		switch(MidiType & 0xf0)
...
============================================
=========== Minimum Change To ==============
...
	if(MidiByte >= 0x80)
	{
		if(MidiByte >= 0xf8)
		{
		//System Real Time Messages
		}
		else
		{
			// STATUS Byte
			MidiType = MidiByte;

			if (MidiChannel != 0x0f) // Channel 16 for OMNI
			{
				if((MidiByte & 0x0f) != MidiChannel)
				{
					MidiType = 0;
				}
			}
			DataByteCount = 0;
		}
	}
	else
	{
		// Data Byte
		switch(MidiType & 0xf0)
...
============================================================================
========
=========== Change To With Placeholders for System Real Time Messages
==============
...
	if(MidiByte >= 0x80)
	{
		if(MidiByte >= 0xf8)
		{
		//System Real Time Messages
		//============================
		// System Common Messages 0xf1 - 0xf7
		// are not supported - If needed Add single byte messages here
		// multi byte message cases in switch(MidiType & 0xf0) below
		// NOTE: 0xf7 is EOX - end of System Exclusive
		// if supported look for it and finish the Sys Ex task here
			/* Placeholder
			switch(MidiByte)
			{
				case 0xf8:
				{
					// Timing Clock
					break;
				}
				case 0xf9:
				{
					// Undefined
					break;
				}
				case 0xfa:
				{
					// Start
					break;
				}
				case 0xfb:
				{
					// Continue
					break;
				}
				case 0xfc:
				{
					// Stop
					break;
				}
				case 0xfd:
				{
					// Undefined
					break;
				}
				case 0xfe:
				{
					// Active Sensing
					break;
				}
				case 0xff:
				{
					// System Reset
					break;
				}
			}
			*/
		}
		else
		{
			// STATUS Byte
			MidiType = MidiByte;

			if (MidiChannel != 0x0f) // Channel 16 for OMNI
			{
				if((MidiByte & 0x0f) != MidiChannel)
				{
					MidiType = 0;
				}
			}
			DataByteCount = 0;
		}
	}
	else
	{
		// Data Byte
		switch(MidiType & 0xf0)
...
==========================

-----Original Message-----
From: ASSI [mailto:Stromeko at nexgo.de]
Sent: Friday, March 12, 2010 12:04 AM
To: Jerry Gray-Eskue
Subject: Re: [sdiy] FW: Communications with voices in a polyphonic synth


[off-list]

Hi Jerry,

even for this stripped down FSM you would need to handle RT messages
seperately as side-channel data, as they can come between status and
data bytes (and hence must not reset your DataByteCount).


Regards,
Achim.
--
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Factory and User Sound Singles for Waldorf Q+, Q and microQ:
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