disconnect USB - is it possible?

[mister_e]

Totally untested thought...
what happen if you stop calling USBSERVICE?

thereafter, what may happen if you use the method shown in the famous known "POST 148"

' snip
usb_device_state   var byte EXT
CONFIGURED_STATE   CON EXT

DoUSBinit:
    pause 500
    usbinit ' initialise USB...
    repeat  ' kick-start it
        usbservice
    until usb_device_state = CONFIGURED_STATE

POST 148
http://www.picbasic.co.uk/forum/show...&postcount=148

EDIT 1:
Here's the complete list for usb_device_state var

; USB Device States - To be used with [byte usb_device_state]
#define	DETACHED_STATE		0
#define	ATTACHED_STATE		1
#define	POWERED_STATE		2
#define	DEFAULT_STATE		3
#define	ADR_PENDING_STATE	4
#define	ADDRESS_STATE		5
#define	CONFIGURED_STATE	6

EDIT:2
I don't think you can relly on that ding-dong noise... check USBDemo, it has this fake led showing if the device is connected or not. An another alternative is to use USBDeview...
http://www.nirsoft.net/utils/usb_devices_view.html