XENIX.. speed up of /dev/port .. (Getting the INODE)

[Curt]

I thank you for the suggestion of  (mknod /dev/port 4 3) to create a 
device which I can talk to the I/O ports.. 

My current problem is this:

	I have 1.2 Meg, to send down through an I/O port.  Since
	I have to to an 'lseek' every time I wish to send a byte down 
	to a specific port address, it takes an astronomical amount of
	time to send the data.

	Is there any way to cause READ/WRITE to NOT update the file 
	pointer address when you execute them.  If not, HOW DO I GET
	HOLD OF THE i-node so that I can reset the file pointer	to the
	proper address every time I issue a READ/WRITE.

	I am trying to cut down the system call overhead.

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