Mike. Very cool to have gained your attention with this thread. What you have done with mTCP is awesome. I will spend more time with it. I love that someone has created things like that for MS-DOS. I played with a 3rd party TCP/IP stack years ago, but I only had minimal success with it. That was around 2002 and I don't remember what it was called. I'm assuming it wasn't yours since it was so long ago 😀
As for serial / parallel methods, I have been doing most of the attempts from a Windows 7 system with a pci-e card that provides a parallel port and two serial ports.
I have been approaching this with the assumption of no optical or floppy drive being available om the old DOS system. Just trying to see what I can do when forced into a serial only corner (for science of course).
I have had success so far with serial only. Fastlynx 3.3 appears to have given me the most success thus far, because it makes such an assumption. It guides you to use the MODE command and CTTY commnd to setup and listen on serial ports for anything coming in. I had no idea after all these years that DOS could do that natively. With this method, you can send Fastlynx's provided SL.EXE over to DOS from Windows 7 and setup a client on DOS to work with. Once the client was running, it discovers the serial and parallel ports on my DOS computer that it's willing to work with. Two way file tramsfers work fine from the GUI in Windows 7 at this point.
However, I have not been able to test parallel. Windows 7 does not appear to be loading the LPT port driver that Fastlynx provides for using parallel. I do have a proper cable, but so far I can't get past the driver hurdle. I think it's support works for Windows up through 7, but only on 32 bit systems. Does any of what I described sound correct?
Interesting, but from what I read it is of no use to me with Windows 7.
ll3.exe I think is a program called laplink. However I am not sure what this program is or if I have all of it. So far the exe does not work in Windows 7 64bit.
Same problem. Does not seem to work on 64 bit systems.
Teraterm on Windows:
Procomm on DOS:
These two work fine together for Xmodem. I'd still like to try Zmodem for it's multiple file support. (Can directories and subdirectories be moved over serial?) But I have not found a DOS program with Zmodem built in yet to try with. This approach is serial only. Works though.
Maybe I should of used a better topic.
Windows 64bit to MS-DOS serial file transfers.
If anyone can help me further, please let me know.