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Hello,
I am trying to simulate an Avalon modular scatter gather DMA in Stream to memory map configuration.
I am trying to send descriptor info (providing write address in appropriate field as specified in the user guide, appropriate Byteenable, & Driving "write" signal high from test bench to the DUT (i.e msgdma_0), through the descriptor channel (msgdma_0_descriptor_slave_write, *_descriptor_slave_writedata, *_descriptor_slave_byteenable).
I am also driving data and valid through "msgdma_0_st_srink_data", "msgdma_0_st_srink_valid" and feed to the DUT(msgdma_0), configured CSR field as per user guide.
Simulation is running properly without any error, I can see all the test bench signals in the waveform as expected.
But I do not see any output coming out from the platform designer generated IP (msgdma_0) in their respective output ports such as (msgdma_0_mm_write_address, *_mm_write_write, *_mm_write_byteenable, *_mm_write_writedata, or *_csr_irq_irq).
Can you pls guide where I am going wrong ? or suggest how can I get the expected behavior of Avalon modular scatter gather DMA.
Thanks,
Ashish.
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Hi,
May I know are you interface this ip with nios?
Thanks,
Regards,
Sheng
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Hi,
I had tapped the design and the waveform as below:
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Hi,
I had problem attached the waveform. I sent to your personal email.
Thanks,
Regards,
Sheng

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