Does anyone know if it is possible? I've got no access to a BBA or a Coder's Cable so my only bet is the 56k modem.
I don't think it was ever made. Of course it'd be possible, but given the low-speed of modem, no one cared enough to implement it. Maybe you can take a look at FreeBSD for dreamcast ... Bios is at address 0x0, and it's 0x200000 long (2 MiB). Flash is at address 0x200000, and it's 0x20000 long (2 kiB). The SD-Card cable would do the job if you can build/buy it (cheaper than BBA/Coder's Cable). Dirt cheap (From 10 cents to 2 bucks maybe ...) solution is the parallel port cable, works only on Win9x. I've personally dumped my bios with this cable years ago: http://f17.aaa.livedoor.jp/~takotako/index.php#dcpprip
I guess the sources for dcload-ip are around, but they would be of no use right? The modem seems to be a complete different hardware, uh? I've got no idea on electronics but that cable seems easy enough to build. Thanks for the link!
the modem is not the most ideal for that kind of stuff(unless u enjoy staring at transfers for a few hours ) maybe u caould dump the bios to an sd card with an sd adpter
@FamilyGuy that's pretty cool to know. Maybe when I sucessfully dump a GDRom, pending help from pros like you, I can dump that too
