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Altera_Forum's avatar
Altera_Forum
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15 years ago

Configuring DMA to write to Two memories

We have to write a set of data (data will be defined while proramming NIOS) to two different memories (the same data will be written to both). We want to use DMA for this purpose. How should we confi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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If you write the data you obtain while running the program in the on-chip memory (using IOWR(_32DIRECT) and IORD(_32DIRECT)) macros. You can simply use 2 DMA controllers to copy the data from the on-chip memory to the 2 different memories.

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One clarification.... the data is to be pre-defined by the programmer.

So, I should configure the on-chip memory as the master read port for the DMA and the target memory as the master write. Right? As the same data also has to be written to another memory, so can I define the second memory as the slave write?

Thanks for your time