Re: Theorizing how to replace a VIC-II by hardware.

On Fri, 24 Jul 2020, Claudio Sánchez wrote:

> Well... I'm starting this as a discussion about what would be needed 
> to replace the VIC-II with hardware that would emulate it and 
> expand/enhance it.

Digesting the "VIC article", taking a good read of the VICE sources and 
eventually available other emulation approaches, then creating a VHDL or 
Verilog model using a suitable FPGA technology (plus according level 
shifters as modern FPGAs are typically not 5V-compatible anymore as well 
as accompanying analog circuitry for the parts that may not be 
achievable on digital level) -- and lots of testing so that the model is 
not just compatible to the officially documented behavior, but also 
works with all the trickery discovered and developed over the last 
decades.

From then on, you could start adding stuff -- first VIC-IIe 
compatibility to bring the C128 specialties to the C64, later then 
further enhancements.

Just don't do it the other way round and start with the fun stuff first.

Rainer