The C65GS aims to provide reasonable compatibility with the C65, just as the C65 was intended to provide reasonable compatibility with the C64. The main C65 feature not supported by the C65GS is bitplanar graphics. Full-colour graphics are instead achieved using a modified text mode.
The VIC-IV has a native resolution of 1920x1200 and 4,096 colours.
- c65gs.blogspot.com.au Making a C64/C65 compatible computer in an FPGA at c65gs.blogspot.com.au, accessed 27 October 2014