I've recently become the owner of a delightful little TP 240 which I'd like to use to talk to some old equipment that doesn't like USB serial adapters and modern operating systems. But despite much fiddling I haven't been able to get the serial port to work in DOS 6.22 - programs that try to access COM1 either hang the machine or fail. I thought I'd take a look at the PS2 DOS utility (uttpfdos.exe, which is v4.43) which I've managed to extract with the help of a VirtualBox DOS machine and a virtual floppy (VFD) file. This should let me control the serial and IR ports. But when I try any of the PS2 commands, including a basic "ps2 ?", on the TP 240 I get this entirely unhelpful error message:
Any ideas?Command not completed for some reason.
Try again later.
If the problem persists, have the system serviced.