Example done with FASM listing USB devices enumerated by DOSUSB.
Implements the 2.0 version driver detection method, supports full INT
range from $60 to $67. Will list some information about the device
including endpoints, although not that generous as the USBVIEW example
does. "LISTDEVS.PNG" is a screenshot showing the output on proper
operation (version strings may slightly differ in final release, and
one of 3 devices has been removed since last enumeration). See the
highligted device numbers (red) and endpoints (green) to be used
for "DISKSPY.EXE" and "PRNUSB.SYS".