• [VOICENWS] Drivers: New USB host controller drivers: usbhcd183.zip

    From VOICE News Service@1:3634/1000 to All on Fri Mar 16 01:22:49 2012

    ++ 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
    I have now placed these on hobbes. http://hobbes.nmsu.edu/download/pub/incoming/usbhcd183.zip

    They will eventually make it into directory:

    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.


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