CompuServe Messages

The problem is that unless it has it's own virtual device driver, it would have to replace the comm.drv in the Windows environment. If that is done, it screws with other replacement comm drivers. If it is a virtual device driver, it seriously limits compatible communication programs that make direct OpenCom, ReadCom, WriteCom, CloseCom, etc… kind of calls. The main problem with the 16550 UART is that Windows does not enable the 16kb buffers in both send and receive directions. In order to get good performance, you have to turn off the FIFO's or replace the comm driver with one that does enable full buffering. A fully accessible 16550A will give reliable 57.6k throughput. The ESP board is a gimick in my opinion. Until v.FC, v.fast or v.32terbo boards and digital lines are widely available, it's a waste of money…. -Jonathan