Re: I82365 driver question

On Wed, Apr 10, 2002 at 06:32:09PM -0700, Sanjay Jain wrote:
> 
> PD6729 card offset only holds bits 25-19 so I think upper 6 bits of
> systm address should be discarded. I got it to work by 
> changing line.
> 
>  i = ((mem->card_start - mem->sys_start) >> 12) & 0x3fff;
> to 
>  i = ((mem->card_start - (mem->sys_start & 0x3FFFFFF)) >> 12) & 0x3fff;
> 
> Now I can see all memory space of the 20 MB card. 

This still doesn't make sense to me; it works on other platforms for
both sys_start values with the upper 6 bits zero as well as non-zero.
And I don't see how the upper 6 bits can affect the result after the
"& 0x3fff" step.  That would seem to contradict how binary math should
work.

What is the actual value of sys_start in your case?

-- Dave