Addicted to GoWin fpga's!

It must be recognized that when one has tasted these GoWin circuits and the simplicity of the development software, it becomes very difficult to resist the urge to use them for a whole host of projects.

I had the opportunity, a few months ago, to replace an Intel FPGA-based module with a GoWin module that I made myself, in a project to rebuild the Micro-Professor MPF-1b:

Multitech - MPF-1 / MPF-1B

The result was that : 

I also use a GoWin FPGA in the final version of my MIDI switch. It works very well.
So why not continue with the recreation of an SP12? In fact at first I wanted to recreate a Drumulator. But given the work done on the subject and the little difference in fact with an SP12, I decided to go with an SP12. 

So I gathered the majority of the digital part as well as the sampling in both directions on a small FPGA-based board. 

It should look like this:

I received the circuit boards a few weeks ago and have just mounted the digital parts:

This time the FPGA system is a bit more complex since the circuit is used with some external memory circuits. In fact, the FPGA does not have enough internal memory to accommodate all of the memory associated with the SP12 processor. No room for sample memory either. Also, some of the memory must be non-volatile and this is not possible with the internal memory of the FPGA.

For the moment, I have not powered this board. I will do that in the next few days.

The next objective will consist in starting the program of an SP12 in this board.
Nice challenge!!!