Hi Hannes, On Fri, May 31, 2019 at 8:06 AM Hannes Reinecke <hare@xxxxxxx> wrote: > Hmm. I wonder: do you _know_ what you are asking? > Have you ever worked with a mainframe? I can assure you I have no idea what I am doing :-). I am doing this as a learning project where my aim is to implement a virtual card reader in user space. > unless you're having access to a fibrechannel analyser hooked up to a mainframe. Funnily enough, I happen to own both. Regards, Chris