REISMAN%MAR@io.arc.nasa.gov (12/02/88)
We also had problems with our ALM-2 lines. When connecting to the outside world via our MICOM switching network we would sometimes lose data. The problem was traced to faulty flow control that screwed up the interswitches. The bottom line is that Sun has had many problems with their Sun OS 4.0 tty driver. They are still working on the driver, and I hear they expect to make an official release soon (i.e. by Q1, `89). In the meantime Sun will send a better tty driver upon request. We called 800-USA-4SUN and had the good fortune to be assigned to Mark Eades. He knew about the problem and sent us a tape with a note that began: This tape contains some new kernal modules and drivers to fix up a few problems with serial devices. In particular, it is aimed at handling the modem "DTR" signal, implementing flow control, and allowing the ALM-II's printer port to be used without crashing. So far the fixes seem to be working. Ron Reisman NASA Ames Research Center reisman@arc.nasa.gov Moffett Field, CA 94035