ModEdit; related ticket: #18668: Problem with sharing serial port after upgrade from 5.2.28 to 6.0.X
Hello,
I have a problem with a virtual machine running DOS 6.22 on Windows 10 Home 1803 Host, that I use to communicate with legacy PLCs through a serial port. I'm sharing the host COM port as host device.
Everything works fine with VirtualBox 5.2.28, but if I upgrade to 6.0.8 (I also tried with 6.0.6), the DOS program cannot communicate.
In the VBox.log (in the new version) I see messages like:
Code: Select all
00:00:28.613321 Serial#0: Failed to change parameters to 2400,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.615033 Serial#0: Failed to change parameters to 9600,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.707566 Serial#0: Failed to change parameters to 9600,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.799691 Serial#0: Failed to change parameters to 9600,NONE,5,1 -> VERR_INVALID_PARAMETER
00:00:28.803813 Serial#0: Failed to change parameters to 9600,NONE,6,1 -> VERR_INVALID_PARAMETER
00:00:28.805203 Serial#0: Failed to change parameters to 9600,NONE,5,1.5 -> VERR_INVALID_PARAMETER
00:00:28.805770 Serial#0: Failed to change parameters to 9600,ODD,5,1 -> VERR_INVALID_PARAMETER
Thanks in advance.
A