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Altera_Forum
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15 years ago

What does an address space contain?

Hi, I added a simple component LCD12864 into nios system.Then I got the address space from system.h:#define LCD12864_BASE 0x00000800#define LCD12864_SPAN 16But I don't know:1) Why SPAN=16.2) What co...
Altera_Forum's avatar
Altera_Forum
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15 years ago

It depends on your component. This one connects the avalon bus to the external conduit in a rather direct way, but other components could do some processing or provide internal memory instead.

The main documentation about the Avalon bus is the specification (http://www.altera.com/literature/manual/mnl_avalon_spec.pdf).