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Altera_Forum
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21 years ago

Nios II DMA speed

I ran "memtest", "full featured" design on Altera/Microtronix C12 Eval. kit and got SDRAM to SDRAM DMA transfer speed of 13 MB/s. Since this was DMA in and DMA out SDRAM, I believe the speed of DMA...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Yes is true

I have the same problem

with the same 13 mb/s without DMA and 30 mb/s with DMA speed

In modelisim i saw that burst mode is not working

I did't try yet arbitration of DMA

You can try increse arbitratrion of DMA and maybe it helps set dma arbitration to 8 or 16

If you use quatrus4.2 and niosv1.1 you can do it but in last version in not working

because SOPC have bugs with it.

If you get burst mode let me know, please.