mp1w+@andrew.cmu.edu (Marc Russell Pawliger) (06/17/87)
I have an electronic message board that was manufactured by the (now defunct) firm called SignLine/Universal, that was located in California (or so says the tag on the back of the display). The thing is Z8681 based, and has two 16K PROMs in it that contain the most convoluted Z80 code ever seen by man. It also has an 8 switch DIP in it. When the display powers up, the PROM version number, followed by the hex representation of the DIPswitch, show for a few seconds. The board has a DTR, TXD and GND. That's it. Does anyone know what language this board might possibly speak? Do the DIPswitches set the baud rate? Any help on this is greatly apprecited. Also if anyone has heard anything of the whereabouts of these now-gone firms, please let me know. Marc Pawliger mp1w+@andrew.cmu.edu mp1w@cmuccvma.bitnet