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Atari coding BBS
Re: STE & Falcon DMA sound |
Posted by: Laurent / Thadoss
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Feb,07.2015-10:40
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Hi,
> Falcon might be different, I don't know if there's a FIFO and what is its size, so seamless playback can be a little more complicated and this would explain why you get "clicks" when turning DMA off/on on falcon (if the FIFO is not as big as on STE).
From what I know, the Falcon has a 2x32 bytes FIFO in the crossbar.
One for DMA play and one for DMA record (I've seen this at least in the falcon030 developer guide, there's a shema which shows these 2 FIFO.
It works nearly like the STE (start/stop DMA, loop) but for both play and record.
There's an extra address :
$FF893C|byte |CODEC-Status BIT 1 0|R/W
| |Left Channel Overflow ----------------------------' ||
| |Right Channel Overflow -----------------------------'|
But I don't know really what it's useful at.
The 2 Falcon FIFO are not implemented into hatari's crossbar emulation code yet.
Laurent
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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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