Changes
/* Sniffing of a real Amstrad */
You can power Amstrad CPC using extension port, applying 5v. By doing it, power down button of Amstrad doesn’t run. Using this way you reach a common 5v power between starter-kit and Amstrad. I connected wires from extension port directly to FPGA, as they are used just for listening.
=== UpperROM policy ===
What does I read when a UpperROM is not physically here ?
* if no ROM do read RAM ?
* if no ROM do read a fixed data value x"00" ?
* if no ROM do read a default ROM ?
I think more about the second response. It shall be nice to test that on original CPC.
=== DONE: Another disk selector ===
