Re: astra 3400

From: rm (
Date: Sat Dec 30 2000 - 16:06:54 PST

  • Next message: Oliver Rauch: "Re: Installation and man page of find-scanner"

    On Fri, 29 Dec 2000, Oliver Rauch wrote:
    > Hi Rob,
    > the scanner is not supported by the Umax backend.
    > As far as I know it is not supported by sane at all.
    > I suggest you buy an scsi scanner!

    well i had already gone ahead and purchased it by the time i read this :).

    i've done some hacking around with it, and it is indeed LM9832 based. the
    usb format isn't described in the datasheet (it says it's in the dev
    software, but i couldn't find this), but it seems pretty simple from
    looking at the usb snoop output.

    the msg format is a bulkmsg send of 4 bytes in the shortest

            nWrite (0 or 1), register address, ???, # of bytes

    the 2nd byte is possibly the high byte of the number of bytes to be

    if it's a read, you follow up by reading the blk endpoint, or if it's a
    write you just put the rest of it in the blkmsg.

    the scanner dependent stuff is in the .ini file that is distributed with
    the scanner. and the lm983x bits should be similar to the hp backend.

    anyway, just thought i'd let you all know the results in case anyone was

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