Hello to all, I am working on fb device and I have general questions regarding cache/uncache access to MIPS memory. User space application use mmap access for r/w access to fb device. If fb use cached memory, user space application has to call cacheflush to flush contents instruction and/or data cache. In this case there are no limitations regarding byte access to this memory. Is this correct statement? If fb use uncached memory, there is no need for cacheflush call in user space application but limitation is access to mmap uncached memory. There is no byte access to uncached mmaped memory. Is this correct statement? Many thanks in advance. Best regards Mile