Also read and understand ZMCv15 which is about the erom contect monitor and Basic.
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How register are used is in there and also the memory mapping bits.? AS Z80 code
its loaded with good examples.? Its not trivial code!
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That means reading Z80 code and understanding it.? ?Lee did a decent job of
organizing and commenting the code.? ITs in a Zip file in the files area.?
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/g/Z80MC/files/AllisonKB1GMX/ZMCv15.zip
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Allison