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accessing USB ports

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nicovda

IS-IT--Management
Oct 4, 2004
19
BE
Hi,

I am working on an assembly routine that interacts with the PS/2 keyboard inputs through the I/O ports 60h and 64h (to use with IRQ1 - int 16h).

I would like to do the sams qith a USB keyboard. I've read a big part of the USb anbd HID spec's, which helped me understand the data transmission protocol of USB. I also know that the USB host controller emulates the PS/2-like behaviour. Unfortunately, I would like to acces the inputs directly as thez come from the keyboard.

Does someone know how to access directly the data arriving at the USB host, in assembly?

Thanks for your help.
 
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