This is a page where I will put information that I have collected that's useful and related to Dreamcast development.

Dreamcast modem

This took a while, but I was finally able to access the modem. And if I can do it.. I'm just wondering why some of the more experienced Dreamcast people haven't done anything with it by now.

Click here to go to a mirror of this page. It contains hardware specific information for Conexant modem chips.
The Dreamcast's modem uses the chips marked RP56LD for the 56kbps version and RP336LD for the 33.6kbps version.

Also, here's the document for the MCU which is used for executing code loaded into SRAM. It's based on the Rockwell 6502 processor but with some modifications.

Download the Dreamcast modem driver source code here (v1.2)