Re: ECP+EPP mode problem with IOMEGA Zip

Tim Waugh (tim@cyberelk.demon.co.uk)
Thu, 21 Jan 1999 08:52:12 +0000 (GMT)


On Thu, 21 Jan 1999, Juan Antonio Martinez wrote:

> > --- linux/drivers/misc/parport_pc.c~ Tue Jan 19 20:11:32 1999
> > +++ linux/drivers/misc/parport_pc.c Tue Jan 19 20:14:03 1999
> > @@ -354,6 +354,7 @@
> > parport_pc_epp_clear_timeout(pb);
> >
> > /* Do a simple read-write test to make sure the port exists. */
> > + parport_pc_write_econtrol(pb, 0xc);
> > parport_pc_write_control(pb, 0xc);
> > parport_pc_write_data(pb, 0xaa);
> > if (parport_pc_read_data(pb) != 0xaa) return 0;
> >
>
> It changes nothing....

So you got this message before applying the patch?

> Jan 20 22:39:59 cochito kernel: parport0: PC-style at 0x378, irq 7 [SPP,PS2,EPP,ECP,ECPEPP,ECPPS2]

In that case, the problem wasn't parport_pc to start with, and the problem
lies with ppa or the Zip drive.

David Campbell has a utility called id_probe.c, so you might want to start
at http://www.torque.net/~campbell and see if you can find it anywhere.
That will tell us some more about your parallel port.

Tim.
*/

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