This chapter introduces the issues relevant to writing a
driver for an ISA device. The pseudo-code presented here is
rather detailed and reminiscent of the real code but is still
only pseudo-code. It avoids the details irrelevant to the
subject of the discussion. The real-life examples can be found
in the source code of real drivers. In particular the drivers
ep
and aha
are good sources of information.
This, and other documents, can be downloaded from http://ftp.FreeBSD.org/pub/FreeBSD/doc/
For questions about FreeBSD, read the
documentation before
contacting <questions@FreeBSD.org>.
For questions about this documentation, e-mail <doc@FreeBSD.org>.