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List:       linux-net
Subject:    Re: LAN activity light always on [Re: HP Vectra built-in PCI...]
From:       Thomas Bogendoerfer <tsbogend () alpha ! franken ! de>
Date:       1996-12-28 10:12:33
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> Now a question for those in the know: the driver programs the LAN
> activity light to be quiescently on, so network activity turns it off
> momentarily.  Is there any way to reverse this behaviour?

yes there is. Most of the PCnet chips own 4 LED outputs, which
can be programed many ways. This is done through register BCR4 to BCR7. BCR4
usually influences the behaviour of link status led, BCR5 of the receive led,
BCR6 of the receive polarity led and BCR7 of the transmit led. Each of the
register have a LEDPOL bit (bit 14), which should reverse the output of the
signal. The current driver doesn't touch any of these bits, but it should
be fairly easy to add the necessary code, to do it.

Thomas.

-- 
See, you not only have to be a good coder to create a system like Linux,
you have to be a sneaky bastard too ;-)
                   [Linus Torvalds in <4rikft$7g5@linux.cs.Helsinki.FI>]

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