Search found 1232 matches

by npomarede
Thu May 17, 2018 10:08 am
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

Hi yes, that's the idea :) working with a larger buffer (triple or even more) is a good alternative too, because you don't have to change the number of generated sample per VBL, you just have to stop generating samples at one point when the buffer is too much "in advance" (this is similar ...
by npomarede
Wed May 16, 2018 9:25 pm
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

Well, that's the problem when you want to play continuous samples with dma audio : you can't base your numbers on 50 VBL, because in fact a PAL STF/STE has 50.0527 VBL per second :) Here's why : base cpu clock is 8021247 Hz and we know one VBL is always 160256 cycles when shifter is set to 50 Hz. If...
by npomarede
Wed May 16, 2018 1:13 pm
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

About quality of pre-transpose + blitter mixing, there is a way to check : if you run BLSplay in test mode (add -test to command line),it will dump the generated sample into a file instead of playing with DMA sound. This file will be generated into .\_logs\ASM\ or .\_logs\C\ or .\_logs\PC\ accordin...
by npomarede
Tue May 15, 2018 10:40 pm
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

About using loop mode instead of play once : for sure it would be cleaner technically speaking but I am not a fan of requiring a second step to run the routine during the VBL because this routine allows to have full remaining time for graphic effects, or blitting without sharing bus, or stable inte...
by npomarede
Mon May 14, 2018 9:57 pm
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

Thank you for your tests and detailled answer :) I have tried to figure out where the clicks can come from. I have the feeling that some appear when the sample is retriggered at each new note (sample is retriggered without any smoothing). On Facebook, Troed has also talked about usual clicks on STe...
by npomarede
Mon May 14, 2018 12:05 pm
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

Sorry I did not find the time to test on my STe. On the current version of BLSplay, you can toggle voices on / off with keys 5 to 8 (not the numpad) I tried 1 to 4, but didn't think to try 5 to 8 :) With only voice A playing, the result is the same in both cases (wait for display on or off). The cl...
by npomarede
Sun May 13, 2018 12:02 pm
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

Hi I tried quickie.bls on my STe, and I don't hear any difference when toggling wait for display, sound remains similar. But this doesn't mean it's correct, it's just hard to spot sound quality issue on my old crt monitor, especially because the click are easier to notice on the bassline, but the ot...
by npomarede
Thu May 10, 2018 3:27 pm
Forum: Coding
Topic: Using blitter for sound mixing
Replies: 53
Views: 10108

Re: Using blitter for sound mixing

Hi not really related to the "click" issue, but looking at the code on github, it seems you inverted the meaning of "waitfordisplay" : if waitfordsiplay is true, you call BLSupdate(), else (waitfordisplay is false), you wait for display to start by checking that video counter inc...
by npomarede
Mon Apr 23, 2018 8:27 pm
Forum: Website Discussions
Topic: Login time limit
Replies: 22
Views: 2440

Re: Login time limit

Here's an example under Opera linux, without restarting anything (only thing I did was to close atari-forum tab, then reopen it later) When reopening a new tab, atari-forum asks me to log again. This is the content of the 3 cookies stored by atari-forum : Name: phpbb_atariforum_k Content: Domain: .a...
by npomarede
Sun Apr 22, 2018 4:56 pm
Forum: Website Discussions
Topic: Login time limit
Replies: 22
Views: 2440

Re: Login time limit

I would check the PC for any special clean-up tools (like CCleaner or similar) or settings in the browser to clean up after use. In my case, this is under Linux, no need for such clean-up tools, and this happens sometimes during the same session, ie without even restarting the PC or exiting the bro...
by npomarede
Sun Apr 22, 2018 11:38 am
Forum: Website Discussions
Topic: Login time limit
Replies: 22
Views: 2440

Re: Login time limit

Just as an example : I posted here at 11:38, then I came back at 13:30 (now) and I was not logged anymore, had to log again. This is really strange, as the cookie used by atari forum are rather "simple" (3 cookies) and they all have an expiration date in 1 year, so I don't know what makes ...
by npomarede
Sun Apr 22, 2018 10:38 am
Forum: Website Discussions
Topic: Login time limit
Replies: 22
Views: 2440

Re: Login time limit

Please, let's not go off-topic, this is about "remember me" option behaviour on atari-forum.com.
What some users reported with the "remember me" option has nothing to do with the state of internet and whether you're being monitor or not.
by npomarede
Sat Apr 21, 2018 10:06 am
Forum: Website Discussions
Topic: Login time limit
Replies: 22
Views: 2440

Re: Login time limit

Note that Opera is based on chrome engine, so maybe the common point is chrome ; but still it doesn't tell why this behaviour is so frequent only with atari-forum in our cases.
by npomarede
Fri Apr 20, 2018 9:15 pm
Forum: Website Discussions
Topic: Login time limit
Replies: 22
Views: 2440

Re: Login time limit

I have this problem too. If I click "remember me" it will sometimes remember for a few hours, but randomly logs out. If I don't click it, I last only 10-20 minutes. My cookies are cleared when the browser closed, but not cleared when open. I have the exact same behaviour. But I wonder if ...
by npomarede
Tue Apr 17, 2018 7:52 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

Is it something that is actively worked on? If not I might be interested in contributing as I have an interest in the Videl part (demo programming). Need to find some time first though. :-) There was some interest by Laurent S (thadoss) who worked on the videl part some times ago, but there was not...
by npomarede
Tue Apr 17, 2018 5:15 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

Also, I have a question regarding the Falcon emulation of Hatari. If I remember correctly Hatari does not fully support all the features of the Videl of the Falcon030. Pleae excuse me if I'm mistaken. If I configure the Videl with a refresh rate to something like 55Hz, will Hatari respect that? I d...
by npomarede
Tue Apr 17, 2018 5:12 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

But this was with "vsync" enabled in Hatari's setting ? Else I don't see how your monitor can switch to some different refresh rate. No, I have vsync disabled in Hatari. Vsync on would make the emulator try to sync to the monitors refresh rate. (144hz in my case) Vsync off with Freesync l...
by npomarede
Tue Apr 17, 2018 10:56 am
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

So my experience with emulators and Freesync has been that you don't have to manually set the refresh rate if the emulator runs in exclusive fullscreen mode and lets you disable vsync Isn't that the opposite ? You need to enable vsync in Hatari screen option to have this to work. I've even noticed ...
by npomarede
Mon Apr 16, 2018 10:19 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

So far, it's not used in Hatari (as I don't have such HW setup to test it (but I'm planning to replace my aging PC soon, so maybe later)), but WinUAE already uses it successfully. Nicolas I'll have to double check when I get a chance, but I remember Hatari 2.1.0 working perfectly with my Freesync m...
by npomarede
Tue Apr 10, 2018 8:37 pm
Forum: Hatari
Topic: Multi-Core support with Hatari?
Replies: 9
Views: 1024

Re: Multi-Core support with Hatari?

This has been discussed already. It does not make much sense, not only because it is complicated to get the synchronization right, but mainly because hatari tries hard to do cycle exact emulation of both the cpu, video system, dsp etc., and the subprocesses (or threads) would most of the time just ...
by npomarede
Sun Apr 08, 2018 9:35 am
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

Yeah, this is something that keeps me up at night. With 60Hz the new world standard for all things video, media produced in the age of 50Hz (or 70Hz DOS demos) is being ruined. Dynamic refresh technologies look interesting. It would make sense to lower refresh rate to the bare minimum when idle to ...
by npomarede
Sat Apr 07, 2018 9:53 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

Hi but if you set ST to Mono, it will refresh frames (including sound) at 70 Hz, but as vsync is ON, the main vsync loop in Hatari will pause until the next 1/60 of sec. Thanks for the info. I was hoping it would use a multi-buffer approach, to generate 70 frames per second but only deliver 60 of t...
by npomarede
Sat Apr 07, 2018 9:39 am
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 127
Views: 13310

Re: Hatari 2.1.0 has been released

Hi but if you set ST to Mono, it will refresh frames (including sound) at 70 Hz, but as vsync is ON, the main vsync loop in Hatari will pause until the next 1/60 of sec. At 70 Hz a frame lasts approx 0.014 sec, so Hatari will generate sound for 0.014 sec every frame (based on the emulated video freq...
by npomarede
Fri Mar 16, 2018 1:47 pm
Forum: News & Announcements
Topic: The FPGA and non-Atari cores deserve the cover of this forum?
Replies: 69
Views: 4576

Re: The FPGA and non-Atari cores deserve the cover of this forum?

but here also maybe some people would like an option to filter it, which depends on what modules could be added to the forum to handle per user settings. +1 for a such resolution. But it isn't an option in case of RSS (witch I use on daily basis), because I guess they aren't customizable per user. ...
by npomarede
Fri Mar 16, 2018 1:09 pm
Forum: News & Announcements
Topic: The FPGA and non-Atari cores deserve the cover of this forum?
Replies: 69
Views: 4576

Re: The FPGA and non-Atari cores deserve the cover of this forum?

Here is how Atari-forum looks like in my RSS reader. Messages marked red are unrelated to Atari. Actually I wonder whether this is still Atari forum. At least, the "non atari thread" is clearly advertised as such in its name :) There was the idea of creating the "various" sectio...

Go to advanced search