On Wed, Apr 30, 2003 at 09:26:03PM -0400, Bret Comstock Waldow wrote:
> [bret@ganesha learning]$ cat /proc/sys/dev/parport/parport0/modes
> PCSPP,TRISTATE
>
> The first three settings correspond to the settings in the BIOS. I'm
> not sure about the last.
As the documentation will tell you, 'modes' indicates the modes that
the kernel is willing to use for transfers; in particular, it is NOT
just 'what the BIOS can do'. For example, the BIOS may have ECP
support, but the kernel may be compiled without support for hardware
ECP.
> Should the response for ECP be PCSPP,TRISTATE,ECP? It's not, and VMware
> reports on start-up that the parallel port doesn't support ECP mode and
> won't be used.
VMware checks the BIOS, not the parport 'modes' file, since it uses
direct inb/outb calls not the kernel for its parallel port transfers.
If it is still checking the 'modes' file then it is a bug. Perhaps
you have an old version of VMware?
http://cyberelk.net/tim/parport/modes.html
Tim.
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