10 Replies Latest reply on Mar 6, 2012 11:30 PM by prajithc_

    cyusb.sys and multiple devices

      We have recently added a second custom device using the same FX2 chip as the first.  We modified the INF to detect the 2nd device's VID/PID.  The problem is we are getting a "Code 38" error in Device Manager (Windows cannot load the device driver for this hardware  because a previous instance of the device driver is still in memory).  Is this expected?  For a work-around we created a renamed copy of the driver and INF and it appears to be functioning.  Is this the design for using multiple devices on a system?