Toccata emulation in FS-UAE (dev)

[amigafreak68k]

Originally Posted by FrodeSolheim

• New option sound_card = toccata.

[FrodeSolheim]

Originally Posted by FrodeSolheim

New option sound_card = toccata.

Actually, the configuration option has "mysteriously" disappeared from 2.5.25dev ;-) (will fix for 2.5.26dev, uae_toccata = true will probably work in the meantime)

[amigafreak68k]

Should Toccata shown under available boards in ShowBoards??

If yes, then "uae_toccata = true" doesn't work

[Romanujan]

I have installed Toccata utilities 9.10 on my OS 3.9 configuration, but it doesn't work - software complains about missing hardware. Upgrading toccata.library to 14.1 did not help. Driver from AHI 6.0 does not play any sound (I have tried multiple settings).

[Romanujan]

The card seems to be visible now, but I can't get any audio (I have tried to play the AHI test sound, config as above). In the WinUAE thread I have seen there are some problems, not every utilities/library version is compatible - I will try to experiment a little more and post the results (but definitely not today).

[amigafreak68k]

Is anyboby successful on using Toccata in FS-UAE? If yes, how?

The card is now present on the system, but I doesn't able to use it. I'd installed the "Toccata.dms" from amiga.resource.cx and copied the last version (14.1) of toccata.library to LIBS:

I can choose the Toccata in AHI (v5 from AmigaOS 3.9 CDROM) without problems but If I try to play a MP3 file with AmigaAMP the application is like frozen.

[FrodeSolheim]

I managed to get Toccata working with AHI today, tested with config:

amiga_model = A4000
sound_card = toccata

And the following software installed:

• Workbench 3.1
• MUI 3.8
• Toccata 14.1
• AHI 4.18
• mpega.library 2.4
• AmigaAMP 2.25

(PS: Remember that AmigaAMP does not use the AHI music unit, it uses AHI unit 0 by default)

[Romanujan]

uae_sound_auto = false

seems to fix the problem (still 2.5.29dev, checked on OS 3.9 only). See here.

[amigafreak68k]

Yes! It really seems to work! :-)

But at this moment only on Amiga OS 3.9

[amigafreak68k]

I had downloaded the converted YouTube-Video from the following link:

[ Show youtube player ]

It plays, I hear sound, but it sounds as it is the Amiga sound output. Can anyone check this please?

[jbl007]

Originally Posted by amigafreak68k

It plays, I hear sound, but it sounds as it is the Amiga sound output. Can anyone check this please?

Today I have used the toccata emulation for the first time. I converted MP3s to WAV and played with HippoPlayer. Sound quality is very good, if you:
- select "Toccata: 16 bit stereo" as AHI audio mode, not one of the Hifi or ++ modes
- set mixing frequency to match the input file (usually 44.1kHz)

The only problem is FS-UAE constantly spams the log file with "no audio buffer available - dropping data" if no audio is played.

And if set to 48kHz:

TOCCATA start Play freq=48011 bits=16 channels=2

I wonder where those 11 additional Hertz come from.


How is toccata emu implemented? Does it use it's own audio output channel on the host system (libao?) or does it stream it into the paula output? And if amiga AHI mixing freq is set to 44.1 does it open host audio at this freq? And what happens if this option is set to a strange value, like 35432Hz? I'm sure, Frode can enlighten us. Thanks in advance.

[FrodeSolheim]

Originally Posted by jbl007

The only problem is FS-UAE constantly spams the log file with "no audio buffer available - dropping data" if no audio is played.

i haven't seen this (but I haven't used Toccata much).

I wonder where those 11 additional Hertz come from.

Well, I checked, and "they" come from the following calculation:
freq = freq_crystal / freq_divider

Where freq_crystal is 24582000 and freq_divider is 512.

24582000 / 512 = 48011

Comment in sndboard.cpp source code says:

static const int freq_crystals[] = {
	// AD1848 documentation says 24.576MHz but photo of board shows 24.582MHz
	24582000,
	16934400
};

Funnily enough, if we replace 24.582MHz in the equation with the 24.576MHz mentioned in AD1848 documentation we get:

24576000 / 512 = 48000

(I cannot tell what is really correct)

or does it stream it into the paula output?

Yes

And if amiga AHI mixing freq is set to 44.1 does it open host audio at this freq?

No, host audio is opened before emulation start at 48000 (or 44100 if that fails) unless overridden by user config.

And what happens if this option is set to a strange value, like 35432Hz?

It gets up/down-sampled to the frequency used by the Amiga chipset emulation, mixed with this, and played through the normal FS-UAE audio output (OpenAL output in libfsemu).

Got this working today:
Using CWB 3.9 - A4000 basic setup with 040 emulated.

In addition to Frode's instructions above, I had to get this: Aminet - driver/audio/m68k-amigaos-ahidrv.lha

Opened the archive, got the correct files for DEVS:AHI and DEVS:AudioModes (just the toccata ones), rebooted, opened AHI, set all music devices to be Toccata HiFi Stereo++. Then used AmigaAmp to play a test mp3. It works! However there are some audible clicking sounds which don't exist when I play the mp3 on my native OS.

[Toni Wilen]

Originally Posted by FrodeSolheim

Funnily enough, if we replace 24.582MHz in the equation with the 24.576MHz mentioned in AD1848 documentation we get

I was going to use data sheet value but I trust real hardware more, even if it seems to be wrong

Perhaps there are some models that simply have wrong crystal..

However there are some audible clicking sounds which don't exist when I play the mp3 on my native OS.

Does FS-UAE have recently introduced better Toccata to Paula audio resampling from WinUAE? Without it sound quality was not that good.

[gulliver]

Originally Posted by Toni Wilen

I was going to use data sheet value but I trust real hardware more, even if it seems to be wrong

Perhaps there are some models that simply have wrong crystal..

To add more weirdness to this fact, the Dracomotion card (which has a toccata built-in) uses the 24.576MHz crystal.

http://amiga.resource.cx/photos/phot...res=hi&lang=en

[mark_k]

Regarding crystal frequencies...

One board pic at amiga.resource.cx shows the crystal marked (probably) 24.5XY2, where X is obscured by a solder blob, and Y is either 3 or 8.

The board pic at BBOAH shows a different type of crystal. Text on it is hard to read, but could be 24.57J3, or possibly 24.59J3.

Another pic on BBOAH shows crystal marked 245x32 where x is illegible. It might just be a decimal point, not a digit?

[Sandro]

I tested toccata emulation in winuae and works fine
but I haven't noted the difference between this and UAE driver
both sound idem

otow, the toccata mono modes don't work correctly:they play in stereo

[FrodeSolheim]

Originally Posted by Toni Wilen

Does FS-UAE have recently introduced better Toccata to Paula audio resampling from WinUAE? Without it sound quality was not that good.

@esc If you use the FS-UAE 2.7.x development series, then you'll get the improved Toccata audio resampler Toni is mentioning here.

Hi Frode, yes, using 2.7.1, sound quality is quite good aside from occasional blips and stutters. Nothing too terrible. Thanks!

[FrodeSolheim]

Btw, the latest WinUAE betas, and the upcoming FS-UAE 2.7.4dev uses the official crystal value (24576000).