LPM-16 device driver for Linux

This is a device driver for the National Instruments LPM-16 Laboratory
Instrumentation card. (Actually, it is a shameless plug of Glenn Moloney's
LabPC+ driver).

	The LPM-16 card has:

	16 input 12 bit ADC	  (Analogue Input)
	3 * counter/timer
	8 bit Digital Input/ 8 bit digital Output

Implemented in lpm16-0.5:
	ADC
	Digital IO ports 

Requires:
	National Instuments LPM-16 card and User's Manual.
	Bj0rn Ekwald's modules-1.1.87 package
	Linux-1.3.4 or later.
	/usr/include/linux/autoconf.h 
		should correctly reflect your kernel
		configuration. This file is created by "make config"
		when compiling the kernel. 

To install:

	"make" to build the driver module

	"make dev" (as root) to make the special file entries in /dev/lpm16.

	"insmod labpc.o"
		(as root) to load the module into the kernel.

	"rmmod labpc" (as root) to unload the labpc module

Demo programs:
	"cd demo ; make"
		to create the demonstration and test programs

Notes:
	You can also supply the following useful arguments when
	loading the driver:

	"insmod labpc.o labpc_base=0x2C0 labpc_irq=9 labpc_dma=5"

	This command will override the default values of the board
	base address, interrupt request number and DMA channel. You
	can also change the device major (labpc_major) this way, but
	be careful to create the /dev/labpc/* entries with the correct
	major number.

	The DACs and counters can be programmed in a number of
	different modes. Selection of modes is performed by ioctl()
	system calls. Generally, I have followed the programming modes
	in the National Instruments' "Lab-PC+ User Manual".

	For the ADC:
		Most of the programming modes listed in Chapter 5 of
		the LabPC+ User Manual are supported - though some may
		need more testing. Interval scanning has not yet been
		implemented (but channel scanning works fine).

		DMA:
		LPM-16 does not support DMA. 

		DIO:
		Only `simpleIO' implemented: read's/write's are passed 
                as soon as possible to the I/O ports. Not synchronized 
                in any way with the ADC, currently.


ToDo:
	Clocks. 
	Sync digital I/O with analog inputs, if needed.
	Test external interrupts. 
	demo:some kind of `scope' which monitors a few channels of the ADC.

Docs.
		Hmm, documentation - this is it. You really must have
		the National Instruments "Lab-PC User's Manual" to
		make sense of this stuff. Also, take a look at all 
                the allowed ioctl's (line 454--573). 

Problems: mail alexp@sci.kun.nl for bugs, fixes and comments.