Mar 2012 08:32:12 -0400   
   ++ From the VOICE OS/2-eCS News Service   http://www.os2voice.org ++    
      
   From: lars.erdmannDESPAM@DESPAMarcor.de   
      
   I have updated the USB host controller drivers   
   USBUHCD.SYS, USBOHCD.SYS, USBEHCD.SYS, USBD.SYS   
   I have now placed these on hobbes.   
   http://hobbes.nmsu.edu/download/pub/incoming/usbhcd183.zip   
      
   They will eventually make it into directory:   
   /pub/os2/system/drivers/misc     
      
      
   a.) USBEHCD.SYS: changes in resetting the HC on system boot / HC reset   
   b.) IMPORTANT: changes to USBD.SYS. version 10.162 has a fundamental design   
   flaw that prevents it from handling devices that return configuration data >   
   1024 bytes. In practice, many USB 2.0 web cams have > 1024 bytes of   
   configuration data.   
   As a first step, I had to change the USBD interface towards client drivers   
   (something like usbprt.sys, usbmouse.sys, usbser.sys etc.) .   
   There might be client drivers around that act as filter drivers and these   
   can be affected.   
   It is possible that these will subsequently trap this updated USBD.SYS. If   
   this happens, I would be interested to know.   
   I still haven't updated USBD.SYS to support > 1024 bytes of config data   
   (this will be the next step) but I have added some code to prevent   
   the traps that used to happen with USBD.SYS 10.162 when you'd attach such   
   web cam device with > 1024 bytes of config data.   
   In any case, USBD.SYS is still experimental.     
      
      
   Important note: make sure that USBEHCD.SYS goes after   
   USBUHCD.SYS/USBOHCD.SYS in config.sys !   
   I have not yet succeeded in coming up with a solution that would render   
   config.sys sequence irrelevant.     
      
      
   Lars   
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