In 464 mode :
- * the /ROM2 signal is always high : ROM7 selection is not handled on board. - * the /CAS1 signal is always high : RAM extension is not handled on board.
In 6128 mode :
- * the /ROM2 signal is handled on board. - * the /CAS1 is handled on board, with the expected result of getting garbage instead of base RAM when using RAM selection other than C0 - * CPC does get stuck after displaying the copyright message and before the "BASIC 1.0" message. However, plugging a DDI1, even not powered solve the problem. ???
==Extension RAM management==
