Aquarius+ (Plus) Modern-Make Retro System capability demonstration (Z80 CPU with cassette support)

This is a tribute to Sean Harringon's excellent work on developing the Aquarius+ into an enjoyable product. The AQ+ has a nice case package, a lot of SD software content, and great online support. The system also includes IN/OUT audio jacks on the side to support a cassette deck, and a built in "WiModem" type WiFi capability that helps get this system onto the modern internet. On top of that, this system has a wild multi-voice audio capability and sprite support.

My only nits are:
- The word "Aquarius+" confuses search engines, since there is a medical device of the same name
- Compatible joystick/gamepads are so far a little hard to find

But there is still active firmware update support. This is very much a fun product with several developer options, and a lot familiarity due to being Z80 based.

For info about the system, start with the following:
https://github.com/fvdhoef/aquarius-plus

00:39 PART 0 - Initial content overview
01:30 autoexec.example
01:36 PART 1 - CP/M Demo
03:43 PART 2 - Cassette Save/Load Demo
05:50 PART 3 - BASIC Examples (Character Set, Mouse/Timer)
07:30 PART 4 - ESP32 WiFi Usage Examples
09:46 PART 5 - Master System (Modern-Make Software)
14:26 PART 6 - PT3 Audio Demo