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Forum: Coders. Asm / Hardware 28 April 2021, 13:48
Replies: 21
Views: 1,113
Posted By 8bitbubsy
New version! You now have to press ESC to...

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)....
Forum: Coders. Asm / Hardware 28 April 2021, 11:12
Replies: 21
Views: 1,113
Posted By 8bitbubsy
It has more than 32 channels. :p FT2 doesn't...

It has more than 32 channels. :p FT2 doesn't support that.
Forum: Coders. Asm / Hardware 27 April 2021, 22:42
Replies: 21
Views: 1,113
Posted By 8bitbubsy
Thanks. :) Released a new version now that...

Thanks. :)

Released a new version now that supports a command line argument with quotes in it (f.ex. from Dopus).
https://16-bits.org/etc/xmaplay_v025b.zip
Forum: Coders. Asm / Hardware 27 April 2021, 20:28
Replies: 21
Views: 1,113
Posted By 8bitbubsy
Fixed. MuGA was taking over _LVOFreeMem and...

Fixed. MuGA was taking over _LVOFreeMem and messing with the CPU flags, so my dirty way of not testing the pointer returned (but instead just doing "beq.s error") didn't work. Did it the correct way...
Forum: Coders. Asm / Hardware 27 April 2021, 15:27
Replies: 21
Views: 1,113
Posted By 8bitbubsy
This was actually a bug with converting 16-bit...

This was actually a bug with converting 16-bit samples to 8-bit in xmaplay020. Fixed: https://16-bits.org/etc/xmaplay_v022b.zip
xmaplay060 can play 16-bit samples without down-converting them, but...
Forum: Coders. Asm / Hardware 27 April 2021, 13:35
Replies: 21
Views: 1,113
Posted By 8bitbubsy
Please read the included "help.txt" file in the...

Please read the included "help.txt" file in the release zip. ;) Read the "* How do I change the stereo separation (panning)?" section.
Also PM me or use the official thread if you have more...
Forum: Coders. Asm / Hardware 27 April 2021, 13:05
Replies: 21
Views: 1,113
Posted By 8bitbubsy
That's a bit odd, but maybe it's expected when...

That's a bit odd, but maybe it's expected when long-duration interrupts get fired quite often? I don't know. :confused
Forum: Coders. Asm / Hardware 27 April 2021, 11:53
Replies: 21
Views: 883
Posted By 8bitbubsy
The LUT method is really good, I use it myself in...

The LUT method is really good, I use it myself in a project. This way you can also change the amp before clamping in the LUT, so that you get "free" normalization *and* clamping in one LUT. :D
Forum: Coders. Asm / Hardware 27 April 2021, 11:26
Replies: 21
Views: 1,113
Posted By 8bitbubsy
Interesting, maybe I should try to copy that...

Interesting, maybe I should try to copy that specific code from PS3M (and give credits to him, of course). :D
This would also make the code more system-friendly, as it is not directly taking over...
Forum: Coders. Asm / Hardware 26 April 2021, 23:03
Replies: 21
Views: 1,113
Posted By 8bitbubsy
xmaplay - My asm port of FT2's XM replayer for 68020+ Amigas

I'm currently porting Fasttracker II's XM replayer to 68020+ Amigas, using the original source codes.
I know that we have PS3M for HippoPlayer, but its XM support is not only inaccurate, but buggy....
Forum: Coders. Asm / Hardware 03 April 2021, 14:03
Replies: 96
Views: 5,975
Posted By 8bitbubsy
But it's slower on 68020+, right?

But it's slower on 68020+, right?
Forum: Coders. Asm / Hardware 03 April 2021, 13:39
Replies: 96
Views: 5,975
Posted By 8bitbubsy
Wow, didn't know that! You learn something new...

Wow, didn't know that! You learn something new every day. :)
Is this really faster than lsl.w #8,Dn though? Maybe on a 68000 system with fastmem?
Forum: Coders. Asm / Hardware 03 April 2021, 12:05
Replies: 96
Views: 5,975
Posted By 8bitbubsy
Pushing a word to the stack, and popping only a...

Pushing a word to the stack, and popping only a byte back. You absolute madman! :D

I assume you backup the stack pointer before the loop and restore it afterwards?
Forum: request.Music 27 March 2021, 22:59
Replies: 7
Views: 1,693
Posted By 8bitbubsy
PAT2SMP is the button in my ProTracker 2 clone, I...

PAT2SMP is the button in my ProTracker 2 clone, I don't think any PT program on Amiga has that one. Maybe as MOD2SMP.
Forum: Coders. Asm / Hardware 27 March 2021, 13:21
Replies: 44
Views: 2,770
Posted By 8bitbubsy
Yep, I know. Same for the LEN register. ...

Yep, I know. Same for the LEN register.


Sounds like a rare issue, and I don't think I have personally encountered it. It's still worth supporting sample swapping, imo.
Forum: Hardware mods 24 March 2021, 12:44
Replies: 65
Views: 5,677
Posted By 8bitbubsy
You are uninteresting. ;) My point is...

You are uninteresting. ;)


My point is that a computer needs modern software to be usable to the vast majority of computer users. If it doesn't have that, it's just another niche (for the most...
Forum: Coders. Asm / Hardware 24 March 2021, 12:07
Replies: 44
Views: 2,770
Posted By 8bitbubsy
Sample swapping has been a feature since the very...

Sample swapping has been a feature since the very first ProTracker version AFAIK, or at least from very early on... There are plenty of oldskool .MODs out there using the technique.
It works fine in...
Forum: Coders. Asm / Hardware 23 March 2021, 19:59
Replies: 44
Views: 2,770
Posted By 8bitbubsy
Yes it is, "sample swapping" was a common...

Yes it is, "sample swapping" was a common technique used in plenty of ProTracker MODs, especially chiptune-styled ones.
Forum: Hardware mods 19 March 2021, 11:51
Replies: 65
Views: 5,677
Posted By 8bitbubsy
It doesn't matter if the hardware is innovative,...

It doesn't matter if the hardware is innovative, it needs a modern OS and modern software (i.e. not AmigaOS). A machine without modern software makes it uninteresting to most people, and as such it...
Forum: Coders. Asm / Hardware 19 March 2021, 10:09
Replies: 16
Views: 1,027
Posted By 8bitbubsy
Ah, so maybe it's stored as -63..0?

Ah, so maybe it's stored as -63..0?
Forum: Coders. Asm / Hardware 19 March 2021, 09:56
Replies: 16
Views: 1,027
Posted By 8bitbubsy
But I thought you weren't supposed to store the...

But I thought you weren't supposed to store the lower 6 bits as signed -32..31?
Forum: Coders. Asm / Hardware 19 March 2021, 09:13
Replies: 16
Views: 1,027
Posted By 8bitbubsy
Alright, I'm not going to bother with the...

Alright, I'm not going to bother with the calibration then.
Forum: Coders. Asm / Hardware 19 March 2021, 09:03
Replies: 16
Views: 1,027
Posted By 8bitbubsy
I'll try it and see how it works out. ...

I'll try it and see how it works out.

Regarding calibration, that requires unique calibration per Amiga machine, right?
If not, then no problem, the stuff I'm doing is already for generating a...
Forum: Coders. Asm / Hardware 18 March 2021, 22:07
Replies: 16
Views: 1,027
Posted By 8bitbubsy
Seems like the 0..63 range is correct, or at...

Seems like the 0..63 range is correct, or at least anything else I try makes it sound (and look) wrong. So maybe the "lower 6 bits" part just shouldn't be signed (-32..31).
This is a bit confusing...
Forum: Coders. Asm / Hardware 18 March 2021, 21:36
Replies: 16
Views: 1,027
Posted By 8bitbubsy
Ahh of course, that makes complete sense! Can't...

Ahh of course, that makes complete sense! Can't believe I didn't see that, lol.
So ideally I should insert the sign bit in bit 6 and 7 after the lsr?

EDIT: How about just subtracting 32 from...
Forum: Coders. Asm / Hardware 18 March 2021, 21:18
Replies: 16
Views: 1,027
Posted By 8bitbubsy
Question about the 14-bit Paula trick

I don't fully understand how I convert a signed 16-bit PCM sample into an 8-bit pair for 14-bit Paula output...

I have played around with it a bit, and the only way I can make it sound good is by...
Forum: Coders. Asm / Hardware 17 March 2021, 12:47
Replies: 65
Views: 4,029
Posted By 8bitbubsy
If this is trying to simulate vblank playback,...

If this is trying to simulate vblank playback, you need to allow the whole Fxx range for setting ticks per row, IIRC.
Forum: request.Modules 16 March 2021, 14:05
Replies: 5
Views: 1,149
Posted By 8bitbubsy
I downloaded the Wild Flying demo, and the music...

I downloaded the Wild Flying demo, and the music there is just compressed stream data (ADPCM mabe?). It's definitely not stored in tracker module format.
Forum: Coders. Asm / Hardware 16 March 2021, 11:01
Replies: 65
Views: 4,029
Posted By 8bitbubsy
EFx (invert loop) has been used quite a bit in...

EFx (invert loop) has been used quite a bit in music in cracktros, at least. And why is it slow? It has no inner loop, it just inverts one chipmem sample byte per tick.
E8x (karplus-strong) on the...
Forum: Coders. Asm / Hardware 15 March 2021, 12:09
Replies: 298
Views: 16,960
Posted By 8bitbubsy
Does this also apply to the more traditional way...

Does this also apply to the more traditional way of doing 14-bit audio on Amiga? I'd use period 124 (normal video modes) if I could, but if period 128 is more sensible then I'll stick with that....
Forum: Coders. Asm / Hardware 15 March 2021, 11:58
Replies: 65
Views: 4,029
Posted By 8bitbubsy
I have mixed feelings about LSP. It's good for...

I have mixed feelings about LSP. It's good for what it is, but calling it the "fastest .MOD player" is a bit misleading, in my opinion. In the end, it has nothing to do with the old format. :rolleyes
Forum: Amiga scene 03 March 2021, 12:11
Replies: 186
Views: 12,803
Posted By 8bitbubsy
Betraying the Amiga by playing a game that wasn't...

Betraying the Amiga by playing a game that wasn't the cause for killing it? The Amiga was dying anyway, because of bad decisions from Commodore. Blaming it on DOOM is not fair, as it was bound to...
Forum: Coders. Asm / Hardware 16 February 2021, 17:21
Replies: 298
Views: 16,960
Posted By 8bitbubsy
Oh ok, I see. I was indeed using it on memory in...

Oh ok, I see. I was indeed using it on memory in my benchmark test ( clr.l (a0)+ ).
Forum: Coders. Asm / Hardware 16 February 2021, 17:02
Replies: 298
Views: 16,960
Posted By 8bitbubsy
I use clr as seldom as possible, it's slower than...

I use clr as seldom as possible, it's slower than move. I tested this on a 68020 benchmark I made.
Forum: Coders. Blitz Basic 16 February 2021, 12:28
Replies: 8
Views: 1,218
Posted By 8bitbubsy
It sounds like you are somehow working with bytes...

It sounds like you are somehow working with bytes instead of words here.
Forum: Amiga scene 14 February 2021, 22:45
Replies: 63
Views: 4,706
Posted By 8bitbubsy
What would be the point of making anything for an...

What would be the point of making anything for an ancient dead platform kept alive by enthusiasts? The answer is: Having fun, and tinkering with it.
My reason would be: To add more features, fix old...
Forum: Coders. Asm / Hardware 14 February 2021, 12:49
Replies: 21
Views: 1,724
Posted By 8bitbubsy
Just get the master crystal frequency for...

Just get the master crystal frequency for PAL/NTSC Amigas and divide it by 8 to get the Paula rate. Every clock (except keyboard) is derived from this crystal, even the video clocks.

The crystal...
Forum: Amiga scene 26 January 2021, 21:50
Replies: 194
Views: 50,162
Posted By 8bitbubsy
You seem to be quite passionate about PT though,...

You seem to be quite passionate about PT though, maybe you should look into it? :)
There's also echolevel/Syphus. If you want it enough, you'll get it. That's how I learnt to do this kind of stuff...
Forum: Amiga scene 26 January 2021, 18:44
Replies: 194
Views: 50,162
Posted By 8bitbubsy
Why is it so that I'm the only light of hope for...

Why is it so that I'm the only light of hope for ProTracker? I'm some random guy that wanted to re-source PT2.3D and bug-fix it. If I can do it, so can other people (trust me). It's just a matter of...
Forum: Amiga scene 22 January 2021, 10:32
Replies: 194
Views: 50,162
Posted By 8bitbubsy
Sorry, I'm already very tired of dealing with the...

Sorry, I'm already very tired of dealing with the PT asm code, and I want to be done with it forever, as soon as possible... Crucial bugs must be fixed though.
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