Hi ! Yesterday, I've tried Stefan Nilsen's backend for the hp2200c on my Epson, and It nearly works ! (the head moved, I receive stange data...)
But I have a question related to the programming of lm983x chip. - I've read the 9833 pdf, and I wonder where you can find how to modify the registers of the chip ? Which page show why you need to send one byte for read/write, one byte for the register, 2 bytes for data lenght and so on ??? Stefan does not remember, it was in the source he got from Henning Meier-Geinitz test program for a Bearpaw scanner (LM9831 based). So does anyone know where are the specs of the lm983x's USB interface ? (not lm983x chips specs pdf). TIA, Ludovic Drolez.