info-vax@ucbvax.ARPA (06/01/85)
From: Bruce Bon <BON@JPL-ROBOTICS.ARPA> We have a DR11W parallel interface through which we are trying to do DMA transfers between our VAX 11-750 and a custom device. Programmed transfers work, but we have not been able to get any DMA transfers to work. We suspect that the unsupported XADRIVER supplied by DEC is not working properly, but we don't really have the expertise to analyze the problem and/or write a new driver in a reasonable amount of time. Has anyone successfully used the DR11W for DMA transfers from VMS, and if so, how? We have adjusted various option switches on the board with no success. Has anyone written a DR11W driver that works for DMA transfers? Any suggestions or pointers would be appreciated. Bruce Bon Bon@JPL-Robotics.ARPA ------