The LFO in the PC-Engine is quite simple, it uses the WAVETABLE from the channel 2 to modulate the first channel in different ways, you could use it in DefleMask and hear this by yourself.

In the DefleMask Manual:
12xx - Set LFO Mode:
Enabling the LFO will mute the Channel 2. This effect will set the current LFO mode, a value of 00 will turn off the LFO, a value of 01 will add the LFO data directly to channel 0's frequency, a value of 02 will shift the LFO data left by four places and then it will be added to the frequency, a value of 03 will shift left the LFO data by eight places and then it will be added to the frequency.

13xx - Set LFO Speed:
This effect will set the LFO speed if it is enabled by 12xx effect.

ignore this tutorial, more easy ways to write pc engine music have arrived since i wrote this. use deflemask

chipchamp: i dunno anything more about it than what i wrote. not sure anyone does. it probably hasnt been documented properly anyway

i was wondering if there was good and indepth information on the LFO anywhere. what/how it can modulate stuff ect...  i want descriptions that are more functional than technical.

OMG

YAY

http://www.delek.com.ar/forum/changelogs/changelog-6/

yay

Oh man, sweet!  Thank you for that! HuSIC/Squirrel still seems like the best way for PCE music.

I started writing a HuSIC guide a few years ago, but never finished.  I believe some of the information I discovered may not be in ant1's husic zip file.  For example, there is a built-in autoecho macro:  SDx.
Here it is, even though it's unfinished (there may be a couple of errors in there too):
http://www.tadpolemusic.us/HuSIC_commands.txt

What I was able to find out was from analyzing Naruto's MML files.  http://www.rootnyanplus.com/user/naruto/chiptune.html

edit:  I never realized this before but the #<num> command (insert note for <num> frames into the beginning of the next note), and the k command in conjunction with the SD autoecho macro and the @vr macro(manually decide where to use the autoecho) also work in ppmck!

Some specs: http://www.pcedev.net/blog/files/XM_volume_tables.txt
Channel: each channel has a 5bit mono volume with 1.5db steps, and two 4bit right/left volume with 3.0db steps
Each channel has a 32 sample buffer, 5bit linear PCM (forward looping only, no ping-pong)
6 channels total.
Channel 5 and 6 can independently be switched into white noise mode (32 levels/periods)
Channel frequency is a 12bit value and is the exact same rate as the Amiga
Most game drivers use a 7khz driver and drive 1 or 2 channels in DDA mode
DDA mode is where you just write a 5bit linear PCM value to the DAC (can be switched back and forth)
The waveform buffer play 'pointer' and write pointer are shared, so you can update the channel's waveform while it's play to 'corrupt' the waveform to get some strange effect (some pce games do this).
There's a master volume dual 4bit left/right register with 3.0db steps
Updating frequency register of channels doesn't not reset the channel's waveform pointer, so it won't 'click'.
There's a control bit that will reset the waveform pointer per channel, you can use this to manually do sync on the channel (though no game does this)
Not sure what else to say about it...

+1 for Defle PCE support!  Hoping a PCE Everdrive comes soonish.

It doesn't have a synth chip. It's a 6 channel, 5 bit sample thing. So you can "emulate it" with any DAW.

http://www.interlog.com/~daves/pce_info/pcesound.txt

Sure doesn't look that hard, but let's face it. I personally prefer a more straight forward tool to use. I like the idea of having to program the music, but I personally like it better the way I currently work with a DAW that gives me instant feedback of the sounds I work with at the moment. That's why I ask if anyone got some knowledge what synthesis the TG16 uses since I try to design a VST plugin for modern DAWs to use.

why don't you guys just start learning mml/xpmck? i promise it's not that hard

Convoluted in which sense? Looks like a normal tracker to me and it comes with a manual.

I really don't like that tracker since it is really convoluted, and no good spoken tutorials about how to use it.