Date: Sun, 27 Oct 2002 21:01:25 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: davek@saturn5.com Cc: gkshenaut@ucdavis.edu, hackers@FreeBSD.ORG Subject: Re: Programming the Parallel Port using ppi. Message-ID: <20021027.210125.27780229.imp@bsdimp.com> In-Reply-To: <Pine.BSF.4.44.0210271903180.1234-100000@blackbox.yayproductions.com> References: <200210280155.g9S1tiQ69311@thistle.bogs.org> <Pine.BSF.4.44.0210271903180.1234-100000@blackbox.yayproductions.com>
next in thread | previous in thread | raw e-mail | index | archive | help
In message: <Pine.BSF.4.44.0210271903180.1234-100000@blackbox.yayproductions.com>
David Nicholas Kayal <davek@saturn5.com> writes:
: Shouldn't 0xff result in 5v outputs?
Depends on of the pins are negative logic, now doesn't it :-)
And most Parallel ports I've measured clock in at about 3.3V.
Warner
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20021027.210125.27780229.imp>