Any chance of posting some code? It may help.
Or it could be a access privilege (root is required to access low I/O)
And make sure that the parameters are the right way round outb(value, port) ( outb(port, value) is the MS/DOS way)
Or it could be a access privilege (root is required to access low I/O)
And make sure that the parameters are the right way round outb(value, port) ( outb(port, value) is the MS/DOS way)