[sane-devel] parallel port sniffing?
On Wed, Jun 13, 2012 at 1:51 AM, stef stef.dev at free.fr wrote: Le 12/06/2012 14:52, Gernot Hassenpflug a ?crit : So I am wondering about the other question I asked: how would one sniff parallel port devices? I've never done that before. Hello Stef, ? ?long go, I wrote a custom VxD that sets debug interrupts on parallel port addresses and then logs I/O in for of ASM opcodes. It works only in win 95 or win98. I can send it if you want. 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)? I'll try that initially too, but I am afraid that the ALPS scan software may not work at all, hence my looking at direct parallel options. At the moment I lack a Win95 or Win98 VM to try this on, but I'll keep your kind offer in mind. Many thanks once again, Gernot Hassenpflug
[sane-devel] parallel port sniffing?
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
[sane-devel] parallel port sniffing?
Le 12/06/2012 14:52, Gernot Hassenpflug a ?crit : Hi, I asked short time about about ESC/P and got some answers--it seems though I should not worry about the protocol for this particular device and just work on supporting the commands raw. So I am wondering about the other question I asked: how would one sniff parallel port devices? I've never done that before. Regards, Gernot Hello, long go, I wrote a custom VxD that sets debug interrupts on parallel port addresses and then logs I/O in for of ASM opcodes. It works only in win 95 or win98. I can send it if you want. Regards, Stef
