It has been a long time since I installed this on my old win95 machine and I went back to the documentation because I remember getting the serial port set up then was a pain. The documentaion has a few config.sys file settings for the serial port to work correctly. DEVICE=C:\DOS\HIMEM.SYS DOS=HIGH, …

Sorry, I didn't see the file attachment option until I hist submit. Here is the whole file.

Here is the output in the file. Thanks for all the help! COM1: BASE 3f8, IRQ 4 1.000 Port type directserial realport ttyS1 1.000 RTS off. 1.000 DTR off. 1.000 CTS off. 1.000 msr interrupt on. 1.000 DSR off. 1.000 RI off. 1.000 CD off. 1.000 msr interrupt off. 19168.710 write 0x80 to LCR. 19168.712 …

I am still getting the same errors with the recent release. Here is the error. Serial1: Warning: Tried to activate FIFO. Serial1: Errors occured: Framing 0, Parity 0, Overrun 1 (IF0:0), Break 0

Here is how I have the dosbox.conf file setup. serial1=directserial realport:ttyS1 startbps:9600 parity:N stopbits:1 bytesize:8 The serial port is /dev/ttyS1. I am able to connect to the plc using minicom with these parameters. I have tried connecting in Windows with the dosbox release 0.65 with no …

Sorry, but I am yet another newbe. I am trying to run an old dos app called LM90 for commicating to a PLC in dosbox running on linux. I download the latest dosbox cvs revision, but as soon as the application tries to commicate with the PLC I get this output on the terminal. Serial1: Opening /dev/ …