On Tue, Sep 19, 2000 at 06:38:03PM +0200, Benno Senoner wrote:
> And I registered a two 6msec peaks on this kernel :-(
> Perhaps it is due to the polled printer driver ?
It could be. Was it using interrupts (what does dmesg say)? We do a
couple of fast polls, but I don't think that they should be anything
like 6msec: more like 25usec. Perhaps the logic there is broken?
> (does anyone know if linux supports DMA on the parallel port
> (perhaps this will help),
> and if it's enough to enable this in the BIOS ?)
There is support for using DMA on ECP-enabled chips in 2.4.0-test, but
not in 2.2. Enable it using a kernel config option.
Tim.
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