EMU 1 : SIOs are working!

Well, finally, as expected, I was able to set up communication with port #0 of the SIOs without difficulty. It works with the SIO/2 as well as the SIO/0 (fake SIO/2) placed on the adapter that I made.

I can get rid of the original circuit with full knowledge of the facts.

I think I can now enter a 'normal' phase of debugging this electronic board. Because I imagine that it will not work immediately. That would be too good to be true!

Indeed, in principle, replacing the original SIO with a new circuit should not have caused me so many problems. I'll skip over the doubts about the operation of the new circuits, in the end, I had to add a delay when starting my monitor to allow the SIO to initialize correctly.

I imagine that the EMU 1 boot system will also have this problem. I will have to look at the RESET system to see if it is long enough to allow all the components to initialize correctly.

To be continued...