internal:
get cache setting/set cache to zero/reset cache size at the end...
maybe add something for pioneer cd drives (spin up problems)
check for disc present with cooked_ioctl
use index0 optionally to cut off the pregap portion
detect serial copying management system (SCMS)
implement capability to add a global shift
enhance drive exception methods
enhance cd text:
	increase buffer size
	add tab semantics
	support 16-bit characters
	try fallback read text info from program area


structural:
rehash option system
get rid of global scsi variables
