Does this mean that I can now load data from the SD card when using the VIC20 core ?
How does this work with the C64 Core ?
Unfortunately this is not possible with any other core yet.
This PIC feature "only" allow to load some *.bin core file into the FPGA and start it up.
Any access to memory card need to be done in those core and the PIC too.
What do I call the VIC roms files I put on the SDcard, and what should the VIC20 core be named ?
Is the CORE selector in OSD ?
I think you do mean any VIC20 disk file instead of ROM files
. In this case its already answered.
Yes the core selection is provided by OSD, but you have to use PGM-RESET or power-down Minimig to reach it again. By now only the Amiga core is able to access PIC and show this function.