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open an port on freebsd

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Old 12-04-2002
open an port on freebsd
i have made some thing with leds on it. i put it directly on the printer port. in dos and windows i can send data to it with outp(0x378,123); and then have some leds on and some leds off. i found out that it is possible linux with same assembly (after searching much.). but i want to have those led on my printer port on my freebsd machine.
i also have looked in freebsd and found out that there is a function liek that but for that you need to know a device. and to get that you need to be an driver .... (not sure if that is good but i read many c files of the freebsd kernel).

i like to have a function what does the same as outp in conio.h (also input for reading form an port would be nice) in dos/windows for freebsd is there any one who can make something like that.
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LEARN ABOUT V7

setleds

SETLEDS(1)						      General Commands Manual							SETLEDS(1)

NAME

       setleds - set the keyboard leds

SYNOPSIS

       setleds [-v] [-L] [-D] [-F] [{+|-}num] [{+|-}caps] [{+|-}scroll]

DESCRIPTION

       Setleds reports and changes the led flag settings of a VT (namely NumLock, CapsLock and ScrollLock).  Without arguments, setleds prints the
       current settings.  With arguments, it sets or clears the indicated flags (and leaves the others unchanged).  The settings before and  after
       the change are reported if the -v flag is given.

       The led flag settings are specific for each VT (and the VT corresponding to stdin is used).

       By default (or with option -F), setleds will only change the VT flags (and their setting may be reflected by the keyboard leds).

       With  option  -D,  setleds  will change both the VT flags and their default settings (so that a subsequent reset will not undo the change).
       This might be useful for people who always want to have numlock set.

       With option -L, setleds will not touch the VT flags, but only change the leds.  From this moment on, the leds will no longer reflect the VT
       flags  (but display whatever is put into them).	The command setleds -L (without further arguments) will restore the situation in which the
       leds reflect the VT flags.

       One might use setleds in /etc/rc to define the initial and default state of NumLock, e.g. by
	    INITTY=/dev/tty[1-8]
	    for tty in $INITTY; do
		 setleds -D +num < $tty
	    done

OPTIONS

       -num +num
	      Clear or set NumLock.  (At present, the NumLock setting influences the interpretation of keypad keys.  Pressing the NumLock key com-
	      plements the NumLock setting.)

       -caps +caps
	      Clear  or set CapsLock.  (At present, the CapsLock setting complements the Shift key when applied to letters.  Pressing the CapsLock
	      key complements the CapsLock setting.)

       -scroll +scroll
	      Clear or set ScrollLock.	(At present, pressing the ScrollLock key (or ^S/^Q) stops/starts console output.)

BUGS

       In keyboard application mode the NumLock key does not influence the NumLock flag setting.

SEE ALSO

       loadkeys(1)

								    24 Sep 1994 							SETLEDS(1)