[linux-sh:03363] Re: [linuxsh-dev] Re: About Compact Flash Memory Mapped

I got Marc's patches. and I read some pieces of code condiltionally compiled:
#if defined(LH7A400)
typedef u32 PORT
#else
....

PORT later in the code is used as a ponter to the task registers; I ask: if 
the data bus is 16 bits wide, why PORT is u32 and not u16?

Thanks a lot.

Fabio

On Friday 22 October 2004 12:08, mt wrote:
> Check out Marc Singer's Linux port/patch for Logic's
> Sharp A400; the A400 Card Engine has the same
> word-access setup as the 7760 Card Engine.  A
> quote from Marc's webpage:
>
> "Compact Flash (IDE) driver with polling. It
>  can now be used to host a root filesystem."
> ( http://projects.buici.com/arm/lpd7a40x )
>
>
> Also, Logic has a Linux port available for
> the Sharp 79520 Card Engine, which also has
> the same CF setup; though I'd recommend looking
> at Marc's work first.
>
>
> Regards
>
> --- Fabio Giovagnini <[email protected]> wrote:
> > Hi All, Hi Paul
> > I'm writing to understand what I'm in front of.
> > On my Logic PD 7760 based board, I want to enable the boot
> > from CF. The HW
> > manula of the card tells me the CF is connected only in Memory
> > Mapped Mode. I
> > got the eclectical schematic of CF connector connection and I
> > read A0 pin si
> > grounded.This means I can read and write only WORD, and I
> > cannot access the
> > single byte. Now, when I write the Drive/Head (offset 6)
> > register, I write
> > also Command register. Is it possible to execute a command
> > writing together
> > Drive / Head and commad task registers?
> >
> > Thanks a lot
> >
> > Fabio
>
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