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Atari coding BBS
| Re: 200Hz SNDH-replay using TimerC |
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Posted by: evil
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May,27.2015-17:52
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Yeah I experienced the same with a couple of Vortex 2 tunes last year. The replay code is really really slow. I ended up YM-dumping it with Hatari, a path you're already at :)
The problem: Hatari YM-recording dumps the registers at VBL. If your .prg-replay program uses Timer C it will sometimes skip or double up a frame (VBL is really 50.05 Hz).
Solution: make your .prg-replay call the music from VBL.
But I suspect you have more serious replay problems than that, and a qualified guess would be that the buzzer sounds fuck up. Your YM-stream player have to check the stream data for YM register #13, if the data is $ff, you shouldn't update the register.
Here's my YM-player, it's not generic and very clever, but I do believe it takes care of the register stream properly as far as being careful on reg7 and checking reg13.
https://github.com/ggnkua/Atari_ST_Sources/blob/master/ASM/Dead%20Hackers%20Society/Demosystem/ST_Demosystem-v1.0/sys/ym.s
Hope it helps a bit.
--
Anders Eriksson
ae@dhs.nu
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Topic
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Posted by
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Date
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200Hz SNDH-replay using TimerC
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Sdw
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May,21.2015-15:31
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Re: 200Hz SNDH-replay using TimerC
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gwEm/PHF
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May,21.2015-16:00
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Re: 200Hz SNDH-replay using TimerC
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Sdw
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May,21.2015-16:16
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Re: 200Hz SNDH-replay using TimerC
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evil
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May,21.2015-18:40
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Re: 200Hz SNDH-replay using TimerC
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Sdw
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May,27.2015-16:39
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Re: 200Hz SNDH-replay using TimerC
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evil
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May,27.2015-17:52
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Re: 200Hz SNDH-replay using TimerC
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Sdw
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May,27.2015-23:58
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Re: 200Hz SNDH-replay using TimerC
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gwEm/PHF
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May,28.2015-16:42
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Re: 200Hz SNDH-replay using TimerC
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evil
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May,28.2015-17:16
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Re: 200Hz SNDH-replay using TimerC
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Splash/S1
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May,29.2015-00:58
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Re: 200Hz SNDH-replay using TimerC
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evil
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May,29.2015-11:56
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Re: 200Hz SNDH-replay using TimerC
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gwEm/PHF
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May,29.2015-15:13
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Re: 200Hz SNDH-replay using TimerC
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Splash/S1
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May,31.2015-19:21
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Re: 200Hz SNDH-replay using TimerC
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Sdw
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May,31.2015-21:49
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Re: 200Hz SNDH-replay using TimerC
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insane
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Jun,07.2016-10:08
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Re: 200Hz SNDH-replay using TimerC
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insane
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Jun,07.2016-10:29
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Re: 200Hz SNDH-replay using TimerC
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Splash/Sector One
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Jun,30.2016-18:30
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What's the anti-troll code?
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Don't have a code or forgot it? Fix it here.
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