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Atari coding BBS
| STE & Falcon DMA sound |
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Posted by: defjam
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Feb,05.2015-21:31
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I have some little problem,
I stream a sample from harddisk, every 8 seconds the DMA sound address is changed(triple buffering).
On STE I set the DMA sound address as follows:
move.w #0,$8900.w ; DMA sound off
bsr set_DMA_address ; set address in D0
move.w #%11,$8900.w ; DMA sound on
set_DMA_address sets frame_start, frame_address and frame_end(frame_start + the 8 seconds end of buffer)
This is done in the vbl, always at the first time(if there's a address change request, always in sync)
On Falcon the $8900.w writes lead to a audible looping when the address is changed, removing the $8900.w writes will make the audio-playback perfect on F030, but it won't work on STE then anymore(wrong or too late address setting)
Any help is highly appreciated, because I really want to release that STE demo now, but it has to work on Falcon too.
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[All messages in this thread] [Start new thread]
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Topic
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Posted by
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Date
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STE & Falcon DMA sound
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defjam
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Feb,05.2015-21:31
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Re: STE & Falcon DMA sound
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dml
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Feb,06.2015-00:18
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Re: STE & Falcon DMA sound
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mikro
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Feb,06.2015-09:22
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Re: STE & Falcon DMA sound
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Mr.Styckx
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Feb,06.2015-01:04
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Re: STE & Falcon DMA sound
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gwEm/PHF
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Feb,06.2015-11:06
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Re: STE & Falcon DMA sound
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evil
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Feb,06.2015-22:36
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Re: STE & Falcon DMA sound
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Mr.Styckx
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Feb,07.2015-01:43
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Re: STE & Falcon DMA sound
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Laurent / Thadoss
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Feb,07.2015-10:40
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Re: STE & Falcon DMA sound
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Defjam
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Feb,07.2015-18:00
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Re: STE & Falcon DMA sound
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Abstract_f
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Feb,16.2015-15:56
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Re: STE & Falcon DMA sound
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ggn
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Feb,16.2015-16:55
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Re: STE & Falcon DMA sound
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gwEm/PHF
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Feb,18.2015-11:09
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Re: STE & Falcon DMA sound
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PeP
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Feb,17.2015-16:55
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Re: STE & Falcon DMA sound
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gwEm/PHF
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Feb,18.2015-11:05
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What's the anti-troll code?
That's your personal code to be able to add comments and messages on the dhs.nu site.
Don't have a code or forgot it? Fix it here.
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