DRVGEN IS AN INDIRECT MCR FILE THAT WILL GENERATE DRIVER SOURCES FOR
RSX-11M.  THE CODE PRODUCED IS INTENDED AS A TUTORIAL FOR WRITING A DRIVER, OR WITH
SOME MODIFICATION AS NOTED IN THE OUTPUT PRODUCED, MAY BE USED
AS A LOADABLE DRIVER.  DRVGEN.CMD IS ALSO A DECENT TUTORIAL IN THE USE OF INDIRECT MCR.