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Altera_Forum's avatar
Altera_Forum
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14 years ago

Accessing memory in user logic

Hi everybody I am new to NIOS and has been learning how to control a system but is encountering some difficulties. I have added a VGA system to the NIOSII system and is trying to verify if...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Just add the offset to the base address of the memory area.

There are a variety of ways of doing it, you also probably want to bypass any data cache as well.

Personally I would use a C structure (or maybe an array in this case) that describes the IO locations and either set a C pointer to the address (0x81800000 to get cache bypass) or get the linker to assign the absolute address to a symbol.