I have a Kurzweil PC2R (rack) and I would like to use it in General MIDI mode.
I just updated it to OS version 3.10b, and manual supplement included in zipped file where I found OS upgrade says that PCR-1 expansion would be needed. But what really PCR-1 is? Is it a ROM chip or a board? And I believe that it includes the Orchestral Bank (really interesting). So, if I install this expansion in my unit, can I have both Orchestral Bank and GM Bank loaded together in my PC2R? Or must I choose which bank to install? I'm a bit confused on this expansion, please explain.