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Altera_Forum's avatar
Altera_Forum
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16 years ago

In the "creating multiprocessor Nios II systems",I have found a problem on mailbox

Hi,:p In the tuturial,the shared memory is 4KBytes .The mailbox's offset is 0x800 which I think is at the middle of the shared memory and the size of the mailbox is 0x100. So does this mean t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

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I didn't have a look at the software part of the tutorial, but you are free to use the location that you want in the shared memory. Maybe they want to use the first 2k to store some other data...

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Hi,thank you for your reply.But I think the first 2k is just used as the shared memory which woul store the message between the 2 processors.What I feel confused is that why they partition the shared memory in this way:

first 2 K :shared memory;

second 1K:mailbox;

third 1K :shared memory.