|
|
Atari coding BBS
| DSP host bandwidth |
|---|
|
Posted by: jasn
|
Feb,26.2006-00:08
|
Hello,
I am vexed by the slow host to dsp xfer bandwidth of the falcon. The most I can achieve is 2.5mb/s and that's using polling which ties the main cpu up. I would like to know if anyone has overcome this problem, perhaps by using a small interupt like:
a5=memory to xfer
a6=dsp host port.w
move.w (a5)+,(a6)
rte
I suspect that there does not exist an ideal solution to this _in_software_.
However, perhaps by placing a small DMA device on the falcon expansion bus this could be overcome. The processor could fill a DMA buffer on the device quickly and move on to other things. Meanwhile, the DMA device on the expansion bus would move one word at a time to the DSP. This would be, then, a crude but simple device to provide DMA transfers at the fastest rate the DSP could take the data (~4mb/s?) with no hindrance to the main CPU.
Worth looking into? Waste of thought?
-j
|
[All messages in this thread] [Start new thread]
|
Topic
|
Posted by
|
Date
|
|
DSP host bandwidth
|
jasn
|
Feb,26.2006-00:08
|
|
Re: DSP host bandwidth
|
earx
|
Feb,26.2006-00:42
|
|
Re: DSP host bandwidth
|
jasn
|
Feb,27.2006-05:17
|
|
ct2b beats ct60 in host xfers?
|
jasn
|
Feb,27.2006-07:17
|
|
Re: ct2b beats ct60 in host xfers?
|
mikro
|
Feb,27.2006-11:09
|
|
Re: ct2b beats ct60 in host xf
|
sqward
|
Feb,27.2006-16:19
|
|
Re: DSP host bandwidth
|
Peter
|
Mar,02.2006-10:56
|
|
Re: DSP host bandwidth
|
earx
|
Mar,02.2006-13:33
|
|
Re: DSP host bandwidth
|
earx
|
Mar,02.2006-16:51
|
|
Re: DSP host bandwidth
|
Peter
|
Mar,02.2006-18:02
|
|
Re: DSP host bandwidth
|
jasn
|
Mar,03.2006-05:55
|
|
Re: DSP host bandwidth
|
earx
|
Mar,04.2006-11:46
|
|
Re: Platform viable?
|
jasn
|
Mar,05.2006-22:15
|
|
Re: Platform viable?
|
earx
|
Mar,06.2006-09:48
|
|
Re: DSP host bandw. (blitter?)
|
Peter
|
Mar,08.2006-14:52
|
|
Re: DSP host bandw. (blitter?)
|
mikro
|
Mar,08.2006-23:57
|
|
Re: DSP host bandw. (blitter?)
|
Cyprian
|
Mar,09.2006-02:10
|
|
Re: DSP host bandw. (blitter?)
|
Peter
|
Mar,09.2006-11:32
|
|
Re: DSP host bandw. (blitter?)
|
Cyprian
|
Mar,09.2006-12:19
|
|
Re: DSP host bandw. (blitter?)
|
mikro
|
Mar,09.2006-12:44
|
|
Re: DSP host bandw. (blitter?)
|
Cyprian
|
Mar,09.2006-13:04
|
|
Re: DSP host bandw. (blitter?)
|
earx
|
Mar,09.2006-15:38
|
|
Re: DSP host bandw. (blitter?)
|
mikro
|
Mar,09.2006-16:26
|
|
Re: DSP host bandw. (blitter?)
|
earx
|
Mar,10.2006-10:33
|
|
Re: DSP host bandw. (blitter?)
|
Peter
|
Mar,09.2006-11:30
|
|
Re: DSP host bandw. (blitter?)
|
earx
|
Mar,09.2006-15:21
|
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.
|
