I completed a full manual on how to do this connection for both Dosbox-staging and DOSBox-X a the following link: https://subsim.com/radioroom/showthread.php?t=245921

This issue is now fully solved here: 688 Attack Sub multiplayer mode problems

Finally the last piece of the puzzle is solved! There are different DOS versions of 688 Attack Sub online. All the one that I have seen work fine in single player mode but only the one I initially downloaded works as well in multiplayer mode. The one that works in modem connection has to have the …

@Rob, I have just downloaded Dosbox-x and unfortunately 688 Attack Sub is not supported by this fork....the game does not start. On the other end I have tried the modem connection with Dosbox-staging with another real friend, instead that on my local machine with 2 instances of Dosbox-staging open, …

Eureka!!! I finally found the solution to this issue and it is not Dosbox but Dosbox-staging just recently released as a stable emulator. It is the only one I found that has the phone book feature strictly necessary to run the simulator through a modem connection. The phone book file needs to be …

@MasterO, I have seen your link before it was deleted, thank you, very useful. Do you have a thread talking about Dosbox-staging? Dosbox should definitely have this phone book feature and I really do not understand why it has been deleted.

Sorry, just been busy in some other side project here. But I am still interested in this new emulator you developed. Ok, it looks like we are kind of building a machine with all the bits from scratch here. It could take me a while to understand how to set this up maybe because I do not have the …

Thanks Nicknine, so basically this seems something that needs to be patched in some way to the source file to get a compiled executable of Dosbox with this modification inside. I have no experience in compiling the program and maybe I’m asking a silly question but would it be possible to have …

Does anyone know if a patch exists that makes the phonebook/phonelist functionality available: a feature that translates simple phone numbers in IP addresses?

Thank you for this new post, I hope it will get the emulator up and running. Starting from point 1 I imagine you are referring to the following link: https://bitbucket.org/superfury/unipcemu/src/master/ where I can see a README file with the instructions. You suggest to pull all the repository in a …

Just downloaded the server version of your emulator and spent some time to try to understand how to set it up and running it. It is not easy task I would say. I looked at your wiki but it assumes an IT knowledge definitely higher than mine. Do you have any more step by step guide to get it up and …

I tested yesterday the port forwarding and I was able to run Doom2 in multiplayer mode with IPX connection and with the nullmodem feature in Dosbox on 2 different computers at home going both through my local network with 192.168.0.13 as a server and connecting behind the rooter with something like …

That is very interesting indeed because when I tried it in Dosbox I have ever only tested on 127.0.0.1 with 2 instances of Dosbox open at the same time with the nullmodem connection. I thought if it did not work in such a simple way it would have never worked on a connection with a computer behind a …

Superfury, I found this post looking for phonebook solutions to run 688 Attack Sub in multiplayer mode. Reading from your posts it looks like you have done a lot of work on it and the phonebook is not the only issue. For me the nullmodem connection gives me Overrun errors whatever the rxdelay I use …

@Nicknine I am really interested in this phonebook feature because the one set up by HAL9000 has been eliminated as he suggests in the following post: https://www.vogons.org/viewtopic.php?f=41&t=8130&p=99932&hilit=phonebook#p99932 I am trying to play 688 Attack Sub on multiplayer mode and the …

Motherboard: Dell Latitude 5501 Processor type and speed: Intel Corei5 9th Gen. 2496 MHz Amount and type of RAM: 16GB Video board w/ RAM amount and type: Nvidia GeForce MX150 (TDP 25 W), VRAM 2GB Sound board: Realtek ALC3204 Operating system: Windows 10 Version 1809 Game name: 688 Attack Sub, 1989 …

Re: https://www.vogons.org/viewtopic.php?f=7&t=33461 I set up a development environment, downloaded everything that is needed to recompile DOSBox, wrote a simple modification, recompiled and long story short, the game is now working. I am now able to call from within the game through the modem …