I think it's an Intellicart. I think I can see a white cable coming out of the cartridge going to the Mac right beside it.
Yeah, I was thinking the same thing. It's hard to tell at that image resolution.
Now about the Tutorvision sound chip. When you say it sounds like the original 1978 Intellivision, is that different than the 1980 Intellivision?
I'm saying it's closest to the original AY-3-8914 in terms of how the registers behave. The most noticeable behavior is the behavior of "count == 0." That seems to be the source of "thin sound" complaints on some Intellivision 2s. The STIC1A behaves more like the AY-3-8914 here, giving a maximal count for "count == 0."
And regarding jzintv did you put a switch to turn on/off extra gram like Decle's -G2 switch or is it only automatic?
If you provide jzIntv the WBEXEC/WBGROM, it will default to TutorVision behavior. You can also explicitly set the GRAM size with the -G flag.