xmaplay - My asm port of FT2's XM replayer for 68020+ Amigas

[nikosidis]

8bitbubsy: Is it

Great work by the way. Cool to have this on my Amiga 1200/030

[8bitbubsy]

New version!

You now have to press ESC to stop the song, instead of holding down the mouse button (which would sometimes stop the song if you did other things with the mouse in Workbench).
However, ESC is still listened to even if the window is not in focus, and I don't know how to change that.

http://16-bits.org/etc/xmaplay_v026b.zip

[8bitbubsy]

Updated again.

1) asl.library was not closed after closing the file requester instead of selecting a file
2) Remove spaces from end of string (fixes kingcon usage)

Still no changes to how audio is mixed (e.g. it can still hog the system if the song is too heavy for the CPU).

http://16-bits.org/etc/xmaplay_v027b.zip

[8bitbubsy]

xmaplay060 (68060+ version) is now included in the latest version of HippoPlayer.
It can be enabled by ticking the "Enable xmaplay060" checkbox in the Play-2 preference tab.

It uses Paula for output, at 14-bit 27710Hz.
Here's an example from WinUAE on how it sounds: https://www.dropbox.com/s/u0b7jel94y...ay060.mp3?dl=0
(it probably has a bit more noise on a real Amiga since it is uncalibrated)

Here's the standalone version of xmaplay060 v0.40 w/ source code:
https://16-bits.org/etc/xmaplay060_v040.zip

The non-060 version is now obsolete and considered buggy, as I decided to only go for a high-quality 68060 version (and fixed a ton of bugs at the same time).

[TCD]

Originally Posted by 8bitbubsy

It uses Paula for output, at 14-bit 27710Hz.
Here's an example from WinUAE on how it sounds: https://www.dropbox.com/s/u0b7jel94y...ay060.mp3?dl=0

How many channels does that XM use? Sounds amazing

[8bitbubsy]

32 channels. It's " sofa surfin' " by falcon.
https://modarchive.org/index.php?req...id&query=61744

[TCD]

Thank you

[paraj]

Nice. Tried it with a few modules and seems to sound fine (but I'm not musician). Had a brief look at the source code, and I think you can speed up the mixing code with a relatively simple change. The mixing macros all look more or less like:

	movem.w	(a3,d2.l*X),d4{/d5}
        ;
	add.w	a4,d7
	addx.l	d1,d2

When unrolled you have a 2-3 (depending on X) cycle "change/use" register stall on d2 (MC68060UM §10.3) . If you move the add/addx sequence a few instructions up (which I think should be possible) it can be avoided.

Probably move.w (...),d4 \ ext.l d4 is also faster than movem.w (..),d4 since ext is (pOEP|sOEP), but would require more changes.

[8bitbubsy]

Thanks, I'll do some benchmarks with your changes on my 68060 50MHz A1200.

How many instructions should I have inbetween D2 change (addx) and D2 use (move.w) for most optimal performance?

[paraj]

Originally Posted by 8bitbubsy

Thanks, I'll do some benchmarks with your changes on my 68060 50MHz A1200.

How many instructions should I have inbetween D2 change (addx) and D2 use (move.w) for most optimal performance?

Just move them up as far as you can
After

addx.l d1,d2

it's 2 cycles until it's ready for (a3,d2.l) or 3 cycles for (a3,d2.l*2). So you could in principle fit in up to 6 instructions if they fit nicely (but I don' think that's likely in your case).

[8bitbubsy]

So moving the D2 change code did make a speed improvement!
movem -> move+ext however, turned out to not be any faster (but also not slower). Didn't try it for the 16-bit mixer, as it would require 2x move and 2x ext, which I assume will be slower.

I released a new version (w/ source) with the optimizations. If I were to guess, it should be around 1-4% faster.
https://16-bits.org/etc/xmaplay060_v041.zip

I spent a lot of time shuffling code around, and this is the fastest I could get it (even if it may look like more stuff should go inbetween D2 change and D2 use).

[Bruce Abbott]

Originally Posted by 8bitbubsy

The non-060 version is now obsolete and considered buggy, as I decided to only go for a high-quality 68060 version (and fixed a ton of bugs at the same time).

Yet another reason to avoid XM format.

[8bitbubsy]

Originally Posted by Bruce Abbott

Yet another reason to avoid XM format.

Thanks...

[8bitbubsy]

xmaplay060 v0.42 released. It's now reading the ESC key properly, as some people had issues with it before.

https://16-bits.org/etc/xmaplay060_v042.zip

[khph_re]

[QUOTE
The non-060 version is now obsolete and considered buggy, as I decided to only go for a high-quality 68060 version (and fixed a ton of bugs at the same time).[/QUOTE]

Well, only obsolete for 060 users.

[8bitbubsy]

Since certain entitled gentlemen complained about me abandoning the horrible-sounding xmaplay020, I decided to update it to match the xmaplay060's level of bug-fixing.
This version can only do somewhere around 24-28 voices on a 68030 50MHz, and it has no interpolation nor volume ramping (click fest).

Download + source-code:
https://16-bits.org/etc/xmaplay020_v042.zip

Use this version if you have a 68060 or Vampire:
https://16-bits.org/etc/xmaplay060_v042.zip

[TCD]

[ Show youtube player ]
I'm so pissed that people didn't stick with ProTracker and actually went on using more than 4 channels. /s
Edit: [ Show youtube player ]

[8bitbubsy]

25.11.2022: The volume output was wrong (slightly too quiet) on xmaplay020. Fixed.

08.01.2023: Fixed a bug where writes to a wrong memory address were happening while playing a song (thanks to koobo/K-P for discovering it).

15.01.2023: Fixed a bug where DisableAudioMixer could make the mixing loop freeze. This could potentially happen on exit (have never had it happen), or when calling SetPos/NextPattern/PrevPattern (would often happen).

19.02.2023: graphics.library would sometimes not open because of non-initialized d0 register. dos.library would also be closed instead of graphics.library on exit.

01.04.2023: Sample loop unrolling was sometimes wrong on pingpong/bidi samples. Minor change to BPM calculation (SamplesPerTick). xmaplay060: Linear interpolation tap sample fix for non-looping samples.

30.06.2023: xmaplay020 had a potential rare buffering issue for non-looping samples. xmaplay060 was not affected.

Download + source-code:
https://16-bits.org/etc/xmaplay020_v048.zip

(use this better-sounding version if you have a 68060 or Vampire: https://16-bits.org/etc/xmaplay060_v046.zip)