Fwd: Re: Kaypro Motherboard Add-On Question

Hmm, no one able to help? -------- Forwarded Message -------- Subject: Re: Kaypro Motherboard Add-On Question Date: Fri, 8 Jan 2016 22:25:39 -0600 From: Jim Brain <brain at jbrain.com> To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> On 12/12/2015 10:52 AM, Glen Slick wrote: Sorry for the delayed update, but after a few relistings, I was able to secure the PCB for a reasonable price. It is indeed the board listed on the link, and here is another link: https://books.google.com/books?id=7xNVAAAAMAAJ&pg=PA267&lpg=PA267&a… The product is called "KayNet", a baseband twisted pair CSMA/CD local network operating at 125kbps. It uses a network called Web, designed by Centram Systems, Inc. of Camp Hill, PA. The network software , OPSnet, was written by Aquinas, INc., and is compatible with CP/M 2.2 I secured the board, but it needs to be reverse engineered and I lack the time at present. Anyone want to take on the effort? I also need to track down OPSnet OS, and I think there is a bit more to this board (the documentation I found mentions a switch and an RJ-11 connector. I see what looks like the LED wires on the PCB, and there are 3 more pins on the PCB that could be the RJ11 pins. There is a wire that is soldered to U65:pin4 on the motherboard, which I assume is the switch but maybe hooked to this gate as a way to make the switch a softswitch. Here is some documentation: https://archive.org/stream/bitsavers_kayproKayn_4822341/Kaynet_Users_Guide_… Here is the KayNET documentation: https://archive.org/details/bitsavers_kayproKayn_4822341 http://maben.homeip.net/static/S100/kaypro/hardware/kaypro%20kaynet%20users… (Thanks Jason Scott!) Anyone interested in bringing this network back to life? I am happy to design and manufacture replacement PCBs at cost for this... More on KayNET: https://books.google.com/books?id=ui8EAAAAMBAJ&pg=PA3&lpg=PA3&d… http://gopherproxy.meulie.net/gopher.floodgap.com/0/archive/walnut-creek-cd… This looks very interesting, but I think I need help to move forward. Jim -- Jim Brain brain at jbrain.com www.jbrain.com