[Coco] FPGA CoCos
Barry Nelson
barry.nelson at amobiledevice.com
Sat May 23 15:02:12 EDT 2015
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.
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