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Alright, I'll just ask these here:

1. Is Channel 3 the only available channel for drum type sounds? I assume yes, but just checking.

2. Are 'drum sounds' on this chip managed only through manipulation of the noise tones? If not, what are the others I can use? I'm pretty sure that's all there is, but again, just checking.

3. How can I add effects to my sounds such as vibrato and trilling? Is the latter possible? If so, how can I achieve this sound through the edit interface? I mess around with what's there a bit, but this doesn't seem to be possible.

4. When adding harmonics, I was going to take a huge chunk of music data from one channel and throw it in another, bringing it down an octave for effect. Is it possible to take this chunk, select it, and lower it all down by one octave? I tried this but it didn't work.

That's it, pretty easy to use overall, and as I said in my other post, it's pretty spot-on for the most part, messing with octaves can get sounds closer to what you want, but in general I haven't found much difficulty switching what I write on a piano to this thing.

Stan wrote

Is Channel 3 the only available channel for drum type sounds

It's the only channel for noise-type sounds, yes.

Stan wrote

Are 'drum sounds' on this chip managed only through manipulation of the noise tones?

The chip has no concept of "drum sounds" only "square waves and noise". Noise is one way of making drums, but you can combine some tones to make a different sound. A quickly decreasing tone, commonly used for "laser" sound effects in older games, combined with noise makes a pretty good 80s-style synth drum sound, for example - see The Flash. Examine VGMs for more inspiration or examine some of the example PSGMODs.

Stan wrote

How can I add effects to my sounds such as vibrato and trilling?

Look in readme.txt, sections "Effects" and "Commands".

Stan wrote

Is it possible to take this chunk, select it, and lower it all down by one octave?

Look in readme.txt, section "Changing existing notes, effects and commands".

I've always thought it a shame the PSG has no envelope, would have made almost any sound possible with not too much effort.

Manual envelopes are what the Z80's for :) The PSG really is a bargain-basement sound chip, it has almost no features, so it's amazing how good it can sound.

If only line IRQs had worked during vblank you would've been able to do arbitrary duty cycles, sample playback and all kinds of stuff at approx 16 kHz..

You could use H-ints during the active display and then poll the scanline counter during the VBlank. It screws your ability to do anything in the VBlank, and some timing hacks might be needed to make things line up during the switch, but you'd at least get a few thousand CPU cycles left over to run the game. If you could break up some of the game logic into very small chunks that can run between scanline polls then you'd get a few thousand more.

Yeah, I suppose. But it's not a very general solution to something that they should have incorporated into the hardware.

"Should have"? H-ints were designed for raster effects, so there's no logical reason for having them outside the active display. If they'd wanted to have more options for audio they could have paid more than 2p and got a better sound chip, eg. one that supported sample playback or envelopes. A timer-controlled interrupt would do the job even better.

I wasn't referring to line interrupts specifically in my last post, but to any form of high-frequency interrupts.

Maxim wrote

Look in readme.txt, sections "Effects" and "Commands".

This is not in my readme text file. It only talks about how to add this to your program (your music files).

Stan wrote

Alright, I'll just ask these here:
3. How can I add effects to my sounds such as vibrato and trilling? Is the latter possible? If so, how can I achieve this sound through the edit interface? I mess around with what's there a bit, but this doesn't seem to be possible.

Vibrato effects must be added manually (by adding notes in different frequencies), or you can use the built-in pulse vibrato effect, or the vibrato-effects for the instruments.

Trilling or arpegio effects are not yet possible, unless you do them manually.

Stan wrote

4. When adding harmonics, I was going to take a huge chunk of music data from one channel and throw it in another, bringing it down an octave for effect. Is it possible to take this chunk, select it, and lower it all down by one octave? I tried this but it didn't work.

The transposing (edit->transpose->...) is not applied to the music data in the clipboard (= what you've copied), but to what is currently selected in the editor. So to do what you've described, you would copy, then paste, then select and then transpose.

Thanks a lot. By the way, if you add effects like this, do they translate well to an actual ROM or are they technically beyond the actual capabilities of the sound chip?

Such effects have to be done manually on the Z80. The sound chip only supports the setting of a frequency and a volume. But don't worry, it's not going to be super slow.

Thanks, just curious because I don't want to write these songs I've been working on using sound effects that wouldn't even be supported on a real cartridge.

If you set the speed to 1.00 (= the fastest speed), then you can do everything the sound chip can do (at a speed of 1.00 ie. updating the sound once per frame). But it's more and harder work to edit a song at that speed.

But different speeds aren't against the abilities of the chip, correct? So if I write a song at a certain speed, it won't be something I couldn't burn onto a cartridge as part of game ROM correct? I wish actual coding was a lot more user friendly as this is. I've already put together some pretty good tunes, it's really a lot like a drum machine I used to program.

The music tempo doesn't really have anything to do with the PSG. It's just a matter or changing the rate at which the Z80 updates the PSG register values.
I haven't used MOD2PSG2, but I doubt he put any features in there that wouldn't work on an actual SMS, unless that is explicitly stated.

There is the feature that you can half the sound chip's frequency (in the module settings). This is not possible on a real SMS. At the moment, there's only a little warning about that in the readme. It must be stated in the program, too.

Great stuff guys, thanks for the info.

Martin wrote

Vibrato effects must be added manually (by adding notes in different frequencies), or you can use the built-in pulse vibrato effect, or the vibrato-effects for the instruments.

I found the the vibrato effects confusing seeing as most songs don't use them and the feature is not native to the PSG. It also adds another layer to the complexity since the transparent nature of the effect makes it difficult to see what is really going on in affected parts.

For myself at least the depiction of the instrument vibrato is not as meaningful as it is intended because it produces complex waveforms that are not apparent without a proper waveform viewer.

Not so much related to MOD2PSG2, but I have been trying to setup a PSG-like square wave on my hardware synth but it doesn't sound quite the same. The real hardware sounds like it has a second detuned tone played in unison but all the documentation suggests it is just a pure square wave (electrical quirks aside).

The PSG doesn't support any kind of hardware effects, and produces sounds that are quite dull as is. So the trick is to manipulate the waveforms through software in ways that make them sound more interesting.
I don't see adding a vibrato as any stranger than e.g. a volume fade.

Yes the PSG is dull on its own, but that's half the point :)
That hasn't stopped hundreds of titles sucessfully making cheerful little ditties despite limitations.

Having a vibrato is not at all unusual, its the implementation that is odd. While the resulting VGM would be representative of the final product, what you see in the editor is not. I am saying that having instrument level vibrato effect does not make sense to me because its effect can not be directly viewed via the pattern editor, so it is not clear what the final outcome may be just from observation alone.

djbass wrote

Not so much related to MOD2PSG2, but I have been trying to setup a PSG-like square wave on my hardware synth but it doesn't sound quite the same. The real hardware sounds like it has a second detuned tone played in unison but all the documentation suggests it is just a pure square wave (electrical quirks aside).

As above.

More quirks. There are some features of Mod2PSG2 that don't make much sense from a musical rather than technical perspective.

The first is the apparent inclusion of the H note.. which aside from an obscure German musical scale isn't used in most musical notation.. I'm assuming it would normally represent the B note on a standard scale.

The other is the parameter to detune individual notes, normally something like that would be accomplished via an external effects chain.. as reproducing the effect in say in a live performance would be quite hard.

I like the obscure German musical scales and the technical features.

Lol.. they are not totally bad things altogether, and they are there to be used, the problem is that for those of us that prefer not to use them we are not always given a choice.

Take for example I have been using the program to transcribe some VGMs, the problem is that in some songs for example it interprets certain notes as being H and does weird things with them like the afformentioned detuning etc which adds an extra level of difficulty in trying to transcribe the music.

All I am asking I geuss is maybe the abilty to toggle some of these features in the options on/off unless there is a specific technical limitation preventing this.

There's a vgm2mid program if all you want to do is transcribe songs.

Just a Question, or two

1) I change the Speed of a Song in mod2psg2, lets say from 6.000 to 3.000. In_vgm won't care and always play it at the same speed, no matter what I select in mod2psg2. Is there a way to fix that?

2) I export a song to .vgm and play it using in_vgm.dll. Sometimes, when starting the song or when it loops, some channels just play on the left or the right side. Why is that and can I fix this?

I'm using the latest version of in_vgm.dll and probably not the latest version of MOD2PSG2, if something like this got fixed in a recent version I might have missed this. m(_ _)m

thanks,
kami68k

a .vgm:
vrc7.de/kami68k/music/kmi-gradius1.vgm

Where's the SetSpeed command? It should be at the beginning of the module or the speed should be set in the "initial speed" field in the module settings.
Edit: The speed field on the main window is "only" the current temporary playing speed. Changing it doesn't have any effect on exported VGMs.

Because of the left/right problem - Are you using stereo effects? They aren't correctly exported into VGMs in the latest version.

oh its Initial Speed, you are right, that works fine. thanks

I did change the speed where you also adjust Line Speed, Octave and Volume. That obviously was wrong. :P

I'm not using any stereo effects. It's just that sometimes a channel is panned to one side without any reason. Sometimes after I start the song, sometimes after a loop. Always randomly with the same .vgm.

Hmm, can I hear that in the VGM you posted?

kami68k wrote

I'm not using any stereo effects. It's just that sometimes a channel is panned to one side without any reason. Sometimes after I start the song, sometimes after a loop. Always randomly with the same .vgm.

Open up in_vgm's preferences, and go to the PSG tab and make sure random panning IS NOT turned on, thats probably what is happening :)

Thanks,
Scott

thanks Jacko, works fine :)

I jsut wanted to say that when you have KernelEx installed on 98SE, latest MOD2PSG2 starts running fine. Only thing is that sound seems like its 22KHz...

.gg, .vgm and .kss with SN76489
but .gg and .kss with GG stereo
.vgm without GG stereo

Can convert .psgmod to .gg?
Can convert .psgmod to .kss?

VGM files can contain GG stereo.

You can convert PSGMOD to KSS or GG but you need to generate the code to do so.

For the KSS, you would probably need to make a player stub that indexed the necessary data, and then build the MOD2PSG2 code before hooking it up into the format. It could all be done automatically but it'd be a bit of work.

To generate a GG (or SMS) ROM you'd probably want to make some kid of interactive menu, unless you were aiming for single-track files. This would be more work again on top of what the KSS would need.

Alternatively, you can export to VGM, and use a VGM player stub. Maybe you could even hack a KSS out of it, I don't know how well KSS supports paging.

From the VGM specification:

Quote

0x4f dd : Game Gear PSG stereo, write dd to port 0x06

KSS header:

; header of KSS file

code
org $0000 ; it's anywhere ok because this is only header.

db "KSCC" ; Magic string
dw $00A0 ; Load address
dw $203D ; Data length
dw $00A0 ; Driver initialize function
dw $00B0 ; Play address.
db $00 ; No. of bank
db $00 ; extra
db $00 ; reserved
db $06 ; Extra chips

dw 52725,0 ; Offset to the end of file.
dw 0,0 ; reserved(must be 0).
dw 49414 ; number of the first song.
dw 0 ; number of the last song.
db $00 ; PSG/SNG volume
db $00 ; SCC volume
db $00 ; MSX-MUSIC/FM-UNIT volume
db $00 ; MSX-AUDIO volume

Author	Message
Stan Joined: 20 Dec 2004 Posts: 187	MOD2PSG2 Questions Posted: Wed Jun 18, 2008 3:55 am
Stan Joined: 20 Dec 2004 Posts: 187	Alright, I'll just ask these here: 1. Is Channel 3 the only available channel for drum type sounds? I assume yes, but just checking. 2. Are 'drum sounds' on this chip managed only through manipulation of the noise tones? If not, what are the others I can use? I'm pretty sure that's all there is, but again, just checking. 3. How can I add effects to my sounds such as vibrato and trilling? Is the latter possible? If so, how can I achieve this sound through the edit interface? I mess around with what's there a bit, but this doesn't seem to be possible. 4. When adding harmonics, I was going to take a huge chunk of music data from one channel and throw it in another, bringing it down an octave for effect. Is it possible to take this chunk, select it, and lower it all down by one octave? I tried this but it didn't work. That's it, pretty easy to use overall, and as I said in my other post, it's pretty spot-on for the most part, messing with octaves can get sounds closer to what you want, but in general I haven't found much difficulty switching what I write on a piano to this thing.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14752 Location: London	Posted: Wed Jun 18, 2008 8:20 am
	Stan wrote Is Channel 3 the only available channel for drum type sounds It's the only channel for noise-type sounds, yes. Stan wrote Are 'drum sounds' on this chip managed only through manipulation of the noise tones? The chip has no concept of "drum sounds" only "square waves and noise". Noise is one way of making drums, but you can combine some tones to make a different sound. A quickly decreasing tone, commonly used for "laser" sound effects in older games, combined with noise makes a pretty good 80s-style synth drum sound, for example - see The Flash. Examine VGMs for more inspiration or examine some of the example PSGMODs. Stan wrote How can I add effects to my sounds such as vibrato and trilling? Look in readme.txt, sections "Effects" and "Commands". Stan wrote Is it possible to take this chunk, select it, and lower it all down by one octave? Look in readme.txt, section "Changing existing notes, effects and commands".

thatawesomeguy Joined: 25 Jul 2007 Posts: 732 Location: Melbourne, Australia	Posted: Wed Jun 18, 2008 8:28 am
	I've always thought it a shame the PSG has no envelope, would have made almost any sound possible with not too much effort.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14752 Location: London	Posted: Wed Jun 18, 2008 8:47 am
	Manual envelopes are what the Z80's for :) The PSG really is a bargain-basement sound chip, it has almost no features, so it's amazing how good it can sound.

mic_ Joined: 27 May 2008 Posts: 161	Posted: Wed Jun 18, 2008 8:59 am
mic_ Joined: 27 May 2008 Posts: 161	If only line IRQs had worked during vblank you would've been able to do arbitrary duty cycles, sample playback and all kinds of stuff at approx 16 kHz..

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14752 Location: London	Posted: Wed Jun 18, 2008 10:29 am
	You could use H-ints during the active display and then poll the scanline counter during the VBlank. It screws your ability to do anything in the VBlank, and some timing hacks might be needed to make things line up during the switch, but you'd at least get a few thousand CPU cycles left over to run the game. If you could break up some of the game logic into very small chunks that can run between scanline polls then you'd get a few thousand more.

mic_ Joined: 27 May 2008 Posts: 161	Posted: Wed Jun 18, 2008 11:00 am
mic_ Joined: 27 May 2008 Posts: 161	Yeah, I suppose. But it's not a very general solution to something that they should have incorporated into the hardware.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14752 Location: London	Posted: Wed Jun 18, 2008 11:11 am
	"Should have"? H-ints were designed for raster effects, so there's no logical reason for having them outside the active display. If they'd wanted to have more options for audio they could have paid more than 2p and got a better sound chip, eg. one that supported sample playback or envelopes. A timer-controlled interrupt would do the job even better.

mic_ Joined: 27 May 2008 Posts: 161	Posted: Wed Jun 18, 2008 11:20 am
mic_ Joined: 27 May 2008 Posts: 161	I wasn't referring to line interrupts specifically in my last post, but to any form of high-frequency interrupts.

Stan Joined: 20 Dec 2004 Posts: 187	Posted: Sat Jun 21, 2008 3:30 am
Stan Joined: 20 Dec 2004 Posts: 187	Maxim wrote Look in readme.txt, sections "Effects" and "Commands". This is not in my readme text file. It only talks about how to add this to your program (your music files).

Martin Joined: 04 Nov 2004 Posts: 273	Posted: Sat Jun 21, 2008 2:15 pm
Martin Joined: 04 Nov 2004 Posts: 273	Stan wrote Alright, I'll just ask these here: 3. How can I add effects to my sounds such as vibrato and trilling? Is the latter possible? If so, how can I achieve this sound through the edit interface? I mess around with what's there a bit, but this doesn't seem to be possible. Vibrato effects must be added manually (by adding notes in different frequencies), or you can use the built-in pulse vibrato effect, or the vibrato-effects for the instruments. Trilling or arpegio effects are not yet possible, unless you do them manually. Stan wrote 4. When adding harmonics, I was going to take a huge chunk of music data from one channel and throw it in another, bringing it down an octave for effect. Is it possible to take this chunk, select it, and lower it all down by one octave? I tried this but it didn't work. The transposing (edit->transpose->...) is not applied to the music data in the clipboard (= what you've copied), but to what is currently selected in the editor. So to do what you've described, you would copy, then paste, then select and then transpose.

Stan Joined: 20 Dec 2004 Posts: 187	Posted: Sat Jun 21, 2008 2:41 pm
Stan Joined: 20 Dec 2004 Posts: 187	Thanks a lot. By the way, if you add effects like this, do they translate well to an actual ROM or are they technically beyond the actual capabilities of the sound chip?

Martin Joined: 04 Nov 2004 Posts: 273	Posted: Sat Jun 21, 2008 2:52 pm
Martin Joined: 04 Nov 2004 Posts: 273	Such effects have to be done manually on the Z80. The sound chip only supports the setting of a frequency and a volume. But don't worry, it's not going to be super slow.

Stan Joined: 20 Dec 2004 Posts: 187	Posted: Sat Jun 21, 2008 2:55 pm
Stan Joined: 20 Dec 2004 Posts: 187	Thanks, just curious because I don't want to write these songs I've been working on using sound effects that wouldn't even be supported on a real cartridge.

Martin Joined: 04 Nov 2004 Posts: 273	Posted: Sat Jun 21, 2008 3:16 pm
Martin Joined: 04 Nov 2004 Posts: 273	If you set the speed to 1.00 (= the fastest speed), then you can do everything the sound chip can do (at a speed of 1.00 ie. updating the sound once per frame). But it's more and harder work to edit a song at that speed.

Stan Joined: 20 Dec 2004 Posts: 187	Posted: Sat Jun 21, 2008 4:07 pm
Stan Joined: 20 Dec 2004 Posts: 187	But different speeds aren't against the abilities of the chip, correct? So if I write a song at a certain speed, it won't be something I couldn't burn onto a cartridge as part of game ROM correct? I wish actual coding was a lot more user friendly as this is. I've already put together some pretty good tunes, it's really a lot like a drum machine I used to program.

mic_ Joined: 27 May 2008 Posts: 161	Posted: Sat Jun 21, 2008 4:37 pm
mic_ Joined: 27 May 2008 Posts: 161	The music tempo doesn't really have anything to do with the PSG. It's just a matter or changing the rate at which the Z80 updates the PSG register values. I haven't used MOD2PSG2, but I doubt he put any features in there that wouldn't work on an actual SMS, unless that is explicitly stated.

Martin Joined: 04 Nov 2004 Posts: 273	Posted: Sat Jun 21, 2008 5:18 pm
Martin Joined: 04 Nov 2004 Posts: 273	There is the feature that you can half the sound chip's frequency (in the module settings). This is not possible on a real SMS. At the moment, there's only a little warning about that in the readme. It must be stated in the program, too.

Stan Joined: 20 Dec 2004 Posts: 187	Posted: Sat Jun 21, 2008 6:09 pm
Stan Joined: 20 Dec 2004 Posts: 187	Great stuff guys, thanks for the info.

thatawesomeguy Joined: 25 Jul 2007 Posts: 732 Location: Melbourne, Australia	Posted: Sun Jun 29, 2008 4:02 am
	Martin wrote Vibrato effects must be added manually (by adding notes in different frequencies), or you can use the built-in pulse vibrato effect, or the vibrato-effects for the instruments. I found the the vibrato effects confusing seeing as most songs don't use them and the feature is not native to the PSG. It also adds another layer to the complexity since the transparent nature of the effect makes it difficult to see what is really going on in affected parts. For myself at least the depiction of the instrument vibrato is not as meaningful as it is intended because it produces complex waveforms that are not apparent without a proper waveform viewer. Not so much related to MOD2PSG2, but I have been trying to setup a PSG-like square wave on my hardware synth but it doesn't sound quite the same. The real hardware sounds like it has a second detuned tone played in unison but all the documentation suggests it is just a pure square wave (electrical quirks aside).

mic_ Joined: 27 May 2008 Posts: 161	Posted: Sun Jun 29, 2008 6:48 am
mic_ Joined: 27 May 2008 Posts: 161	The PSG doesn't support any kind of hardware effects, and produces sounds that are quite dull as is. So the trick is to manipulate the waveforms through software in ways that make them sound more interesting. I don't see adding a vibrato as any stranger than e.g. a volume fade.

thatawesomeguy Joined: 25 Jul 2007 Posts: 732 Location: Melbourne, Australia	Posted: Sun Jun 29, 2008 7:27 am
	Yes the PSG is dull on its own, but that's half the point :) That hasn't stopped hundreds of titles sucessfully making cheerful little ditties despite limitations. Having a vibrato is not at all unusual, its the implementation that is odd. While the resulting VGM would be representative of the final product, what you see in the editor is not. I am saying that having instrument level vibrato effect does not make sense to me because its effect can not be directly viewed via the pattern editor, so it is not clear what the final outcome may be just from observation alone.

thatawesomeguy Joined: 25 Jul 2007 Posts: 732 Location: Melbourne, Australia	Posted: Mon Jun 30, 2008 8:32 am
	djbass wrote Not so much related to MOD2PSG2, but I have been trying to setup a PSG-like square wave on my hardware synth but it doesn't sound quite the same. The real hardware sounds like it has a second detuned tone played in unison but all the documentation suggests it is just a pure square wave (electrical quirks aside). As above.

thatawesomeguy Joined: 25 Jul 2007 Posts: 732 Location: Melbourne, Australia	Posted: Tue Jul 08, 2008 1:47 pm
	More quirks. There are some features of Mod2PSG2 that don't make much sense from a musical rather than technical perspective. The first is the apparent inclusion of the H note.. which aside from an obscure German musical scale isn't used in most musical notation.. I'm assuming it would normally represent the B note on a standard scale. The other is the parameter to detune individual notes, normally something like that would be accomplished via an external effects chain.. as reproducing the effect in say in a live performance would be quite hard.

Martin Joined: 04 Nov 2004 Posts: 273	Posted: Tue Jul 08, 2008 3:44 pm
Martin Joined: 04 Nov 2004 Posts: 273	I like the obscure German musical scales and the technical features.

thatawesomeguy Joined: 25 Jul 2007 Posts: 732 Location: Melbourne, Australia	Posted: Wed Jul 09, 2008 4:36 am
	Lol.. they are not totally bad things altogether, and they are there to be used, the problem is that for those of us that prefer not to use them we are not always given a choice. Take for example I have been using the program to transcribe some VGMs, the problem is that in some songs for example it interprets certain notes as being H and does weird things with them like the afformentioned detuning etc which adds an extra level of difficulty in trying to transcribe the music. All I am asking I geuss is maybe the abilty to toggle some of these features in the options on/off unless there is a specific technical limitation preventing this.

mic_ Joined: 27 May 2008 Posts: 161	Posted: Wed Jul 09, 2008 6:01 am
mic_ Joined: 27 May 2008 Posts: 161	There's a vgm2mid program if all you want to do is transcribe songs.

kami68k Guest	Posted: Sat Feb 14, 2009 11:23 pm
kami68k Guest	Just a Question, or two 1) I change the Speed of a Song in mod2psg2, lets say from 6.000 to 3.000. In_vgm won't care and always play it at the same speed, no matter what I select in mod2psg2. Is there a way to fix that? 2) I export a song to .vgm and play it using in_vgm.dll. Sometimes, when starting the song or when it loops, some channels just play on the left or the right side. Why is that and can I fix this? I'm using the latest version of in_vgm.dll and probably not the latest version of MOD2PSG2, if something like this got fixed in a recent version I might have missed this. m(_ _)m thanks, kami68k a .vgm: vrc7.de/kami68k/music/kmi-gradius1.vgm

Martin Joined: 04 Nov 2004 Posts: 273	Posted: Sat Feb 14, 2009 11:34 pm
Martin Joined: 04 Nov 2004 Posts: 273	Where's the SetSpeed command? It should be at the beginning of the module or the speed should be set in the "initial speed" field in the module settings. Edit: The speed field on the main window is "only" the current temporary playing speed. Changing it doesn't have any effect on exported VGMs. Because of the left/right problem - Are you using stereo effects? They aren't correctly exported into VGMs in the latest version.

kami68k Guest	Posted: Sun Feb 15, 2009 12:13 am
kami68k Guest	oh its Initial Speed, you are right, that works fine. thanks I did change the speed where you also adjust Line Speed, Octave and Volume. That obviously was wrong. :P I'm not using any stereo effects. It's just that sometimes a channel is panned to one side without any reason. Sometimes after I start the song, sometimes after a loop. Always randomly with the same .vgm.

Martin Joined: 04 Nov 2004 Posts: 273	Posted: Sun Feb 15, 2009 12:40 am
Martin Joined: 04 Nov 2004 Posts: 273	Hmm, can I hear that in the VGM you posted?

Jacko Joined: 01 Feb 2004 Posts: 1464 Location: Sunny ol Tamworth, New England NSW AU	Posted: Sun Feb 15, 2009 2:23 pm
	kami68k wrote I'm not using any stereo effects. It's just that sometimes a channel is panned to one side without any reason. Sometimes after I start the song, sometimes after a loop. Always randomly with the same .vgm. Open up in_vgm's preferences, and go to the PSG tab and make sure random panning IS NOT turned on, thats probably what is happening :) Thanks, Scott

kami68k Guest	Posted: Wed Feb 25, 2009 4:35 am
kami68k Guest	thanks Jacko, works fine :)

TmEE Joined: 31 Oct 2007 Posts: 853 Location: Estonia, Rapla city	Posted: Wed Mar 11, 2009 11:05 pm
	I jsut wanted to say that when you have KernelEx installed on 98SE, latest MOD2PSG2 starts running fine. Only thing is that sound seems like its 22KHz...

UNKNOWN Guest	About Posted: Fri May 29, 2009 11:08 am
UNKNOWN Guest	.gg, .vgm and .kss with SN76489 but .gg and .kss with GG stereo .vgm without GG stereo Can convert .psgmod to .gg? Can convert .psgmod to .kss?

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14752 Location: London	Posted: Fri May 29, 2009 11:41 am
	VGM files can contain GG stereo. You can convert PSGMOD to KSS or GG but you need to generate the code to do so. For the KSS, you would probably need to make a player stub that indexed the necessary data, and then build the MOD2PSG2 code before hooking it up into the format. It could all be done automatically but it'd be a bit of work. To generate a GG (or SMS) ROM you'd probably want to make some kid of interactive menu, unless you were aiming for single-track files. This would be more work again on top of what the KSS would need. Alternatively, you can export to VGM, and use a VGM player stub. Maybe you could even hack a KSS out of it, I don't know how well KSS supports paging.

mic Guest	Posted: Fri May 29, 2009 12:13 pm
mic Guest	From the VGM specification: Quote 0x4f dd : Game Gear PSG stereo, write dd to port 0x06

boh Guest	KSS header Posted: Fri May 29, 2009 3:27 pm
boh Guest	KSS header: ; header of KSS file code org $0000 ; it's anywhere ok because this is only header. db "KSCC" ; Magic string dw $00A0 ; Load address dw $203D ; Data length dw $00A0 ; Driver initialize function dw $00B0 ; Play address. db $00 ; No. of bank db $00 ; extra db $00 ; reserved db $06 ; Extra chips dw 52725,0 ; Offset to the end of file. dw 0,0 ; reserved(must be 0). dw 49414 ; number of the first song. dw 0 ; number of the last song. db $00 ; PSG/SNG volume db $00 ; SCC volume db $00 ; MSX-MUSIC/FM-UNIT volume db $00 ; MSX-AUDIO volume

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