we are using pdiusbd12 and we are able to enumerate the device on
windows 2000 with a little driver code tweaking

the bulk in / bulk out pipes are opened. however when we try to write 8
bytes of bulk in data from controller and give the command to read
bulkin from USB host we are not not able to read the data instead we
get the message as " device not responding"/ and the pipe halted.

what need to be done