Hi all, I plan to implement the USB support for the MPC8270 processor. The 8270 has a USB host controller which is neither UHCI nor OHCI. besides which i read that it pretty much has the requirements to be a Host controller. I am reading through the hardware manual, and also trying to understand the design and core functionality required for a Host Controller right now. So any pointers on the same would be helpfull. One thing that i cam across in the hardware manual, that really intrigued me was "The following tasks are not supported by the hardware and must be implemented in software: - Incrementing the frame number and generating CRC5 for the SOF (Start of Frame) token once per frame (1 ms) " I was wondering if such a code could be written on the stock linux kernel, where the interrupt latency itself is about 1-2 ms (correct me if i am wrong here) would any MPC-peoples out here help on figuring this out? :-) I read something about some microcode patch for MPC processors. If someone could tell me what that does, it would be helpfull. regards, Vishal
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