On Sun, Dec 19, 1999 at 11:35:20AM -0500, Stephane Bouchard wrote:
> Hi,
>
> I would like to know what choice must I do between there options for make
> better programming:
>
> -Interrupt service routine / periodic real-time task (what is faster of
> make a controller with a A2D/D2A board? and can I use floating point
> operation with both method?)
>
> -What is the better method to write/read on a device : (see code examples)
> /* badr is a ptr uint8 on the base address of the device */
> writeb(data,badr);
This only works for devices that are mapped with ioremap().
> or
> outb_p(data,badr);
This is only for legacy ISA and PCMCIA devices. And outb() should be
used instead of outb_p(), unless you really need it.
> or
> *badr=data;
This is wrong in all cases.
> I have source code with all examples and I would to know what is faster and
> what is the "regular" good method?
dave...
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