Tadpcm in bex (compressed audio z80 player)

[Deleted]

Can you explain how you got it to work? I'm sure it would be useful information when beginnerxorz II comes around

[beginnerxorz]

I downloaded the files and put them in the BasiEgaXorz install directory. I renamed

z80_tadpcm1khz.o80

to

tadpcm.o80

and in pcm_player.asm I changed

incbin z80_tadpcm1khz.o80
to

incbin tadpcm.o80
and then in BasiEgaXorz I type

asm
move.b #$01,d0 ;What song to play
jsr Playtadpcm ;branch to the Player in the include file
end asm

asm
include "pcm_player.asm"
end asm


then I compile. It takes a while, but it's worth the wait!
By the way, to put your own songs in, go to
audio.online-convert.com/convert-to-wav
set the bit resolution to 16-bit
set the sampling rate to 8000hz
set the audio channels to mono
wait for the song to convert
put it In the directory of BasiEgaXorz. edit compress.bat so it says

pcm2tadpcm "song.wav" "songc.snd"

now edit pcm_player.asm. things get trickier here
first duplicate this and put it under the routine to play song 2

Playsong1:
jsr PCMDriverLoad
move.w #$100,($A11100).l ;Stop the Z80
WaitZ80_01:
btst #0,($A11100).l
bne.s WaitZ80_01 ;Wait for z80 to stop
   move.b #(((song1)&$FF0000)>>16),($a00042).l ;location high byte
   move.b #(((song1)&$FF00)>>8),($a00041).l ;location mid byte
   move.b #((song1)&$FF),($a00040).l ;location low byte
   move.b #(((song2-song1)&$FF0000)>>16),($a00045).l ;length high byte
   move.b #(((song2-song1)&$FF00)>>8),($a00044).l ;length mid byte
   move.b #((song2-song1)&$FF),($a00043).l ;length low byte
   move.b #$C0,($a0004d).l ;pan center
   move.b #$FF,($a0004e).l ;play how many times
   move.b #$00,($a0004f).l ;pause = 0
   move.b #$01,($a00050).l ;sample rate (NEW!);0D=11khz 04=16KHZ 22KHZ=01 8khz=15 7khz=1A 6khz=20 5khz=28
   move.w #$0,($A11100).l ;Start the Z80
rts
change song2 to song3 and change song3 to song4
then change Playsong1 to Playsong3
now change all 2 WaitZ80_1 to WaitZ80_3
change the includes.
as you can see the label song3 is empty. Add under there

incbin "song.snd"
align 2
now under that add
song4:

put nothing under there. compile and run. This should work. This took a long time to type though. good luck to you!

[zenac]

In the example of this topic, is it possible to STOP the song?

[Deleted]

Dec 16, 2013 17:28:55 GMT -5 zenac said:

In the example of this topic, is it possible to STOP the song?

Change this line under each SongX: from this:
move.b #$FF,($a0004e).l ;play how many times
to this:
move.b #$01,($a0004e).l ;play how many times

in the pcm_player.asm file

[Deleted]

And just an FYI - this driver appears to use most of the FM channels, at the very best guess, 3 or 4, so it will interrupt/halt your FM tracks (at least with TFM)

[sega16]

That is not true it only uses FM6. You can choice to either use FM6 as an FM channel or a DAC channel.

[Deleted]

It completely cuts out all of my TFM tracks (I use 1 through 5 as I use a different PCM driver, but I wanted to see how well this one compared), so if it's only using FM6, then something else is going on. The TFM Driver was loaded after TadPCM, which shouldn't matter since TadPCM is on the z80 and TFM is on the 68k.

[sega16]

Apparently I never responded to this sorry about that. The reason for it cutting out your FM music is that the z80 driver and your m68k code are trying to access the ym2612 at the same time.

[Deleted]

Oct 17, 2014 21:18:20 GMT -5 sega16 said:

Apparently I never responded to this sorry about that. The reason for it cutting out your FM music is that the z80 driver and your m68k code are trying to access the ym2612 at the same time.

Ahhh. That makes sense. Would this driver work with moons GYM player that he posted in another thread?

Also, is it possible to play 2 PCM sound clips at the same time? (I'm sure it is possible, but sound is beyond my knowledge currently)

[Deleted]

Oct 20, 2014 8:04:02 GMT -5 @elusive said:

Would this driver work with moons GYM player that he posted in another thread?

You shouldn't be using that GYM player unless you want to do something like SMS Brawl in the first place .. but it depends on the GYM file. The GYM format supports PCM instructions .. but as they are logged per frame, they end up sounding terrible. So as long as your GYM file doesn't use channel 6 you can use a PCM sample on the side. You'd need to add proper bus requesting to the GYM player though, since the TadPCM driver will be accessing the YM2612 from the Z80.

Anyway, in short; you shouldn't use GYM .. and when you do don't use any GYM files / music that use PCM.

Oct 20, 2014 8:04:02 GMT -5 @elusive said:

Also, is it possible to play 2 PCM sound clips at the same time? (I'm sure it is possible, but sound is beyond my knowledge currently)

There's only one PCM / DAC channel on the YM2612, so when you want to play multiple PCM samples at once you need to mix them in software.

[Deleted]

Ah. I see. Thanks for the clarification

[beginnerxorz]

I have a bit of a problem here.

I added a "Song 3" to my 68k assembly file.
But whenever I call Song 2 to play in BEX, it calls Song 3 for some reason.
I've checked the code, line by line, and it is all right.

[Deleted]

Nov 3, 2015 6:09:53 GMT -5 beginnerxorz said:

I have a bit of a problem here.

I added a "Song 3" to my 68k assembly file.
But whenever I call Song 2 to play in BEX, it calls Song 3 for some reason.
I've checked the code, line by line, and it is all right.

You're probably misusing some labels or not quite understanding how the sound driver works. Without seeing your code I can only guess.

The few people I know are using Stefs XGM driver. That even comes with examples.
devster.proboards.com/thread/1071/add-music-sfx-game-driver