On Mon, 2011-01-17 at 05:51 -0600, luboss wrote: > 1. opened the port with win32 appl. called hwtest > 2. restored previous settings (backed up with stty -g -F /dev/ttyS0) > 3. placed card, nothing comes from the port. (cat /dev/ttyS0 works) > > I tried another COM test. It died after choosing the port to test. > In windows with the same reader those programs work well. > The only programs I've tried both worked: they are Win95 programs and work with Wine set to emulate Win 98. I have 6 serial ports (ttyS0 and ttyS1 are on the motherboard, ttyS2-ttyS5 are on a multiport PCI adapter. Once I'd added a kernel parameter to enable all six serial ports they were all immediately available to both Linux native programs and the Windows apps. I did not need to add symlinks - they just appeared as COM1: - COM6:. However my Wine apps have never been able to access USB serial adapters, though I admit I haven't tried again since I installed the PCI multi-serial adapter. Disclaimer for the following comments: I haven't tried to code for serial ports in the Windows environment since Win 95 and I've only programmed Windows with Borland C compilers. If a serial port API has been implemented for Win2K and its successors I don't know about it so you should ignore what follows. I think a major problem is the absence of a standard DOS or Windows serial port API. This forced developers to either roll their own using assembler or C code to access the hardware directly or to use third party libraries such as Willies Software's COM-DRV. It follows from this that there is no standard way of coding for serial ports and so IMO it will always be hit and miss whether any particular program can access serial ports under Wine. Martin