[Coco] FPGA CoCos

[Barry Nelson]

 So, I am to understand that you have a fully working emulated CoCo 3 on a modern FPGA board? What is supported? Does sound work? What about graphics? What graphics modes are supported? Can I plug legacy joy sticks into it? Where can the files be obtained to program it? How dos disk access currently work?

> After about 3 hours of trial and error this amateur VHDL coder got it 
> figured out! (I'm sure a more experienced person would have figured it 
> out in no time)  A few very minor changes to Grant Searle's project  
> (which was written for a pretty standard 128K x 8 SRAM) makes it work on 
> the new DE1 board.  The 256K x 16 SRAM on the DE1 now looks like 512K x 
> 8 to the Multicomp project and my MMU which works on another board with 
> a 512K x 8 RAM now works on the DE1.
> 
> Next issue to tackle: make a file system to access the SD Card in FAT 16 
> and eventually FAT32 formats.