(Probably Idiotic) nullDC Question Regarding Multiple Disc Games

[Timepilot2084]

Please, please forgive me-I'm sure this is obvious to everyone but myself.  But I just can't get it.  I'm certainly not new to the emulation scene, in fact, I'm usually the one answering questions such as this.  I've recently begun using nullDC to play Dreamcast games on my PC.  Got it all working fine, but I ran into a problem when I DL'ed Shenmue II.  The game contains 4 discs, and I'm having terrible trouble figuring out how to switch the discs when prompted.  The Saturn emulator, SSF, offers a HARDWARE menu option to OPEN the CD-ROM tray.  nullDC has no such option.  Shenmue II saves the game data, then requests that I switch the disc-I find myself having to close the emulator, NORMAL BOOT the next disc, and then I get...    nothing.  What am I doing wrong here?  Thanks so much for taking the time to read all this and answer.   

[call_me_sir]

Hmm. To be honest, I've never played that much DC through emulators so I couldn't say. It seems like what you're doing should work though.. hopefully someone else will have an answer for you.

[Sonic X]

Well, that's the hard part of emulating, sadly you can't run all discs at the same time, I don't think it's even possible, you could try to use daemon tools to run mulitple iso's with chankast
but Chankast runs really fast.