Grappler+ printer interface

I realise this may not be the best forum to ask this question, but the emulator newsgroups seem to be pretty much dead. I'm updating an Apple ][+ emulator that I wrote back in 1994. I would very much like to emulate a printer interface card, such as the Grappler+, but I never owned a printer for the Apple ][+ I still have at home, so I don't have a printer interface card that I can study. So...I was wondering if anyone on this mailing list happens to own an Apple ][ with a printer interface card like the Grappler+, who would be willing to dump the ROM(s) and provide me with details of the I/O locations used. I realise some of you may be against distributing ROM code on the basis of copyright (I personally feel that discontinued products don't deserve copyright protection, though I realise the law says otherwise). If nobody is willing to provide me with ROM code for a printer interface card, I'll settle for a description of the I/O locations and any other information you can give me on the operation of the printer interface card, and I'll write my own "clean room" version of the ROM instead. Regards, Philip