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Contributions to OpenBSD

Note: I left the OpenBSD project and joined The NetBSD Project. See my list of NetBSD contributions. read more

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Decoding the DCF77 and HBG Time Signal Stations Using OpenBSD

Marc Balmer , The OpenBSD Project Copyright (C) 2006 Marc Balmer Every computer is equipped with at least a clock chip or a general purpose device to provide a timer function. While these timers are...

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Simulating GPIO Pins

I am currently writing a control and monitoring software system that makes use of GPIO pins. Since I was at the CCC congress in Berlin I did only have my laptop and no real GPIO hardware... With only a...

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Support for the Meinberg Standard Time String: msts(4)

A while ago, Maurice Janssen (maurice@z74.net) sent me a modification of the nmea(4) line discipline to support the Meinberg Standard Time String format. With only a few changes, nmea(4) was turned...

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ldattach(8), a new command to attach line disciplines to a tty

Line disciplines have been in Unix since a long time. While they are not device drivers, they interact with tty devices in a very peculiar manner: They attach to a tty device and can then look at, or...

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When seekdir() Won't Seek to the Right Position

The other day, I got an email from Edd, an OpenBSD user, claiming that Samba would crash when serving files off an MS-DOS filesystem. This was Samba built from sources and not the one from ports. Since...

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NetBSD's GPIO Revisited

I reworked the GPIO framework in OpenBSD last fall. Now I have taken my work to NetBSD and updated their GPIO implementation. While there, I corrected some mistakes made in the OpenBSD implementation...

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