Re: Accessing odd bytes
Ian Stirling (root@mauve.demon.co.uk)
Fri, 14 Jun 2002 15:40:37 +0100 (BST)
>
> I have a strange effect on an embedded system (AMD Elan SC410,
> Linux-2.4.18) while accessing a static RAM. The RAM is mapped to the bus
> at 0x0200'0000. If I map it to user space this way:
<snip>
> Now I'm wondering how the kernel/processor handles odd byte access
> exceptions. Can anybody give me a pointer where I could search or what my
> problem could be?
It has been a while, but I believe you may need to setup the SC410s MMU
to tell it it's an 8 bit (or whateve) RAM.
Reading the manuals may reveal details that I've forgotten.
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