I am looking for a UHCI Programmer's Reference Manual for the 82801DB(ICH4). I located the EHCI Programmer's Reference Manual. Thecomplete document name is
Intel 82801EB (ICH5), 82801ER(ICH5R), and 82801DB (ICH4)Enhanced Host Controller Interface(EHCI) Programmers Reference Manual (PRM)
Perhaps the UHCI Programmer's info for the ICH4 is part of another document, but I haven't found it yet. I do have the ICH4 datasheet. Thanks for any help you can provide.