I am writing a driver for a PCI-6013 for a legacy DOS based system. Everything I need is working except that I cannot clear the configuration FIFO so I can change the channel setup during use. According to the E-Series RLPM writing a 1 to the Write_Strobe_0 register (windowed write) will do this. As far as I can tell this has no effect at all. Is it possible that there is something in the STC setup that is preventing clearing the config FIFO or might this be something unique to the 6013?"