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Altera_Forum's avatar
Altera_Forum
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12 years ago

Share SDRAM with other Cores

Hi I want to share my SDRAM (connected to the nios data master) with other component, in my case "Pixel buffer DMA Controller" ip core also i want to use this sdram as my main nios memory whi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Are your NIOS and your "Pixel Buffer DMA Controller" both attempting to use the same portion of SDRAM (e.g. base address 0x00000000) ? In other words, the DMA is writing to the location in SDRAM where the NIOS instructions or data are stored.

There is no problem having multiple components connected to the same SDRAM.

The problem which you may eventually run into is lack of bandwidth to the SDRAM to support your video, but just adding a NIOS isn't enough to cause that.