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jvas wrote:I have the DSP with its own crystal, accelerated all the time (was not stable if it got the clock from the CT60, but that's my motherboard, not the CT60).
And yes, the speed boost is very good without SV. Since SV, I don't use the speed boost. Watch your SCSI reliability if you want experimenting with the boost! (mine had problems at some 060 clock speed)
mzry wrote:jvas wrote:I have the DSP with its own crystal, accelerated all the time (was not stable if it got the clock from the CT60, but that's my motherboard, not the CT60).
And yes, the speed boost is very good without SV. Since SV, I don't use the speed boost. Watch your SCSI reliability if you want experimenting with the boost! (mine had problems at some 060 clock speed)
I would like to do this mod: http://joska.duckdns.org/dsp/ as well but I find the instructions to unclear. Is there any chance you could clarify this in more detail since you have performed the mod? Thx
Specifically I find the 'piggybacking' part unclear, I can understand the soldering to the capacitor though.
paul92706 wrote:I have done this mod, and didn't see much difference in speed, so i reverted back to 32Mhz.
wongck wrote:paul92706 wrote:I have done this mod, and didn't see much difference in speed, so i reverted back to 32Mhz.
Unless you have an application that is choking the DSP, speeding it up will not see noticeable improvement.
The DSP can probably handle all current application available now, without any speed increase.
mikro wrote:The biggest gain is of course from the bus acceleration, it's one hell of a difference if your data travel to/from ST-RAM 25% faster. The DSP is usually just a bonus (and makes sense mainly because the CPU is also 25% faster) but I could really notice it when programming the DSP.
wongck wrote:paul92706 wrote:I have done this mod, and didn't see much difference in speed, so i reverted back to 32Mhz.
Unless you have an application that is choking the DSP, speeding it up will not see noticeable improvement.
The DSP can probably handle all current application available now, without any speed increase.
wongck wrote:I did not use the DSP JPEG processing much, IIRC, it can only decompress certain size JPG.
wongck wrote:I remembered reading a doc on a DSP JPEG decoder and it mentioned something like 24bits 320 x200 JPEG.
Not sure where or which document was that, may be the one from Atari.
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