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Atari coding BBS
| Re: DSP host bandwidth |
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Posted by: earx
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Feb,26.2006-00:42
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hi,
i invented a way to speed up the handshake.. instead of the btst #n,(an) perform an and.b dn,(an)..
this works because the and.b is a single word instruction, whereas the btst takes 2 words.. more importantly, the and, normally being a read-modify-write operation is now a read-only instruction since it is used on a read-only register..
also you can try to transfer 24 bits per handshake instead of 16..
this will save some cycles for each word transfer..
the interrupt you propose will certainly not work without modification. 1.25 mln interrupts/sec is way too much for the 030 to handle. but it's an interesting idea. maybe by doing 16 or 32 transfers per interrupt it will work quite nicely.
your dma hw modification also sounds interesting.. it will require some good hardware design i guess..
normally only 8 16bit 50 kHz channels are allowed as SDMA: 800 kB/sec. you can try to apply these in parallel to you host port xfers. please note that the falcon should have a patched dma for this to work (most ppl have this nowadays).
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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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DSP host bandwidth
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jasn
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Feb,26.2006-00:08
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Re: DSP host bandwidth
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earx
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Feb,26.2006-00:42
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Re: DSP host bandwidth
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jasn
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Feb,27.2006-05:17
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ct2b beats ct60 in host xfers?
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jasn
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Feb,27.2006-07:17
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Re: ct2b beats ct60 in host xfers?
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mikro
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Feb,27.2006-11:09
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Re: ct2b beats ct60 in host xf
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sqward
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Feb,27.2006-16:19
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Re: DSP host bandwidth
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Peter
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Mar,02.2006-10:56
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Re: DSP host bandwidth
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earx
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Mar,02.2006-13:33
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Re: DSP host bandwidth
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earx
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Mar,02.2006-16:51
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Re: DSP host bandwidth
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Peter
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Mar,02.2006-18:02
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Re: DSP host bandwidth
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jasn
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Mar,03.2006-05:55
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Re: DSP host bandwidth
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earx
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Mar,04.2006-11:46
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Re: Platform viable?
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jasn
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Mar,05.2006-22:15
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Re: Platform viable?
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earx
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Mar,06.2006-09:48
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Re: DSP host bandw. (blitter?)
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Peter
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Mar,08.2006-14:52
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Re: DSP host bandw. (blitter?)
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mikro
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Mar,08.2006-23:57
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Re: DSP host bandw. (blitter?)
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Cyprian
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Mar,09.2006-02:10
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Re: DSP host bandw. (blitter?)
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Peter
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Mar,09.2006-11:32
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Re: DSP host bandw. (blitter?)
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Cyprian
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Mar,09.2006-12:19
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Re: DSP host bandw. (blitter?)
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mikro
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Mar,09.2006-12:44
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Re: DSP host bandw. (blitter?)
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Cyprian
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Mar,09.2006-13:04
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Re: DSP host bandw. (blitter?)
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earx
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Mar,09.2006-15:38
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Re: DSP host bandw. (blitter?)
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mikro
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Mar,09.2006-16:26
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Re: DSP host bandw. (blitter?)
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earx
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Mar,10.2006-10:33
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Re: DSP host bandw. (blitter?)
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Peter
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Mar,09.2006-11:30
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Re: DSP host bandw. (blitter?)
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earx
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Mar,09.2006-15:21
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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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