Problems: | "The Windows-xp Drivers have been revised to correct a problem seen by the Nm9835 and Nm9845 devices when they are used to provide only Serial Port interfaces, no Parallel Port is configured. With this configuration, the computer would freeze up whenever a device connected to a Serial Port (Modem, Printer, etc.) was turned ON or OFF, or when a cable was plugged in or unplugged. Interrupts were being generated, and no handler was provided to deal with them. The problem was traced back to the circuitry of these devices that was not being used."
"This new Driver configures a "dummy" Parallel Port when needed to insure the interrupts will always be handled. When installed on a card that configures only Serial Ports, a new device (NetMos Unusable Parallel Port) will appear in the Device Manager along with the other devices in the "Ports (COM and LPT)" section. If the NetMos Parallel Port is configured on the board, it will show up normally, no change from previous versions."
On the SB-PIO9845-4S card, the "unusable parallel port" devices do not appear. As a result, the computer freezes completely upon first use of a device on the third or fourth serial ports, and sometimes freezes during use of the first or second ports.
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