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Altera_Forum
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14 years ago

TSE and scatter-gather dma problem

hi, everyone I am recently trying to connect nios II to computor through ethernet , I separately connected a memory to stream scatter gather DMA to TSE's transmit and a stream to memory scatter g...
Altera_Forum's avatar
Altera_Forum
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13 years ago

It could be a problem with the data cache again, although it is rather odd that it would only get the high (or low) 16 bits of every 32-bit word correctly.

I'd suggest to use signaltap to monitor what the SGDMA is doing, on both the TX fifo (as dsl suggests) and the Avalon master mread interface, to check what address the DMA is using and what it is reading there.