On Wed, Jun 13, 2012 at 11:32:16PM +0900, Gernot Hassenpflug wrote: > Thank you for your reply---that sounds interesting. It is the first > reply I had, which I find a bit strange: does most development for > paralletl scanners rely on them working with a parallel-to-USB > connector (and then using UsbSnoop)?
If the driver uses the Windows API and does not write directly to the i/o ports, you can use Mark Russinovich's Portmon. I simply disassembled the driver or firmware in my last attempts to reverse engineer a parallel port protocol. > At the moment I lack a Win95 or Win98 VM to try this on, but I'll keep > your kind offer in mind. Define DEBUG_PARALLEL in Qemu's hw/parallel.c and it will print everything to stdout. You need to redirect the port to /dev/parallel0. Daniel
