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Altera_Forum's avatar
Altera_Forum
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15 years ago

I need some help of creating shared ddr sdram memory

Hi, everyone:), My system is like this : Using NEEK, I created 2 processors both running in the ddr sdram. Processor1's reset vector offset is 0x100 and exception vector offset is 0x120. Proce...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

You'd be better of allocating a M9K block and dual porting it to both cpu as 'tightly coupled data memory' and using that as the shared space (just make sure you don't do concurrent writes to the same address).

In either case you'll need to use something like Dekker's algorythm for mutual exclusion.