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Altera_Forum's avatar
Altera_Forum
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15 years ago

Read physical address

Hello, I'm trying to read address 0x0400000 (start address of avalon interface 32bits read) and the NIOS just stopped working, I can't read the entire memory block (0x0400000 - 0x040ffff or so...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

or the fact that the CPU wants to write a full cache line could make it write at an address you didn't anticipate.

Use the IORD/IOWR macros to access hardware instead of pointers, it will guarantee a cache bypass.