Hi everyone,

I've been working on RetroSLIP, a Hayes-compatible SLIP dialer for DOS. It is designed to provide a simple way to establish SLIP networking on DOS systems using a modem/serial connection.

I've been testing it extensively in 86Box with MS-DOS 6.22, using the Standard Hayes-compatible Modem device and COM1. The resulting networking stack is:

RetroSLIP → SLIPPER → mTCP

I've successfully tested the connection with Arachne, including loading modern surviving websites such as Win3x.org.

I also tested MicroWeb. While MicroWeb can establish networking through the same stack, I encountered a Divide overflow while loading a page. This occurred with both COM1 and COM2, so it does not appear to be a COM2-specific problem. At this point I consider this a MicroWeb-related known issue, rather than a confirmed RetroSLIP problem.

Project: https://github.com/aghosh2020/retroslip

I'm posting this here because I thought it might be interesting to people working with DOS networking, vintage PCs, and emulation.

Screenshot