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Done:
- get Arduino Mega PRO with ATmega2560 for testing
- ordered some from AliExpress
- it will also serve as component source for the PCB
- get 16MHz output
- there is no connection for this on Arduino boards
- I connected it to some other pin for tests (NEVER use PE5, PE6 in testing)!!!
- map pins in NanoHomeComputer
- I need to know (and have written to see it), what is used and for what functions
- I also need to write all used timers and their connections, as conversion need reassing both pins and timers
- map pins on ATmega2560
- I need to write down what I already used, what are HW limits and to be able to plan optimal use of the rest
- assign VGA/RCA/PS2 pins to ATmega2560
- test VGA output
Next steps:
- test RCA output
- test PS/2 direct input
- test PS/2 8bit input
- assign rest pins on ATmega2560
- draw schema
- draw PCB
- order PCB
- get PCB manufactured
- solder component
- test each goal
- physical tests
- programming
- enjoy :)