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Altera_Forum
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16 years ago

avalon mm byte enable

In the project we are currently working on, we want to read and write pixels to external DDR SDRAM. We need to be able to use byte-mask / byte-enable bits to not overwrite some previously writt...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Jake,

you are correct, I meant to say 1110, not 1100.

I suspect you are correct in guessing that there is no added

logic that manipulates the byte-enables, and they just get passed

directly to the device/component as is.

I have not yet experimented with this to determine whether or not this is the case.

Has anyone written a component that talks to SDRAM that can use arbitrary byte masks? What about other mm components?

Why would Altera put in this restriction?