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when When a ROM bank is mapped into lower ROM (0x0000) or higher ROM (0xC000), reads will go to ROM and writes will go to RAM and mapped ROM is only seen by the CPU.
This is important because the gate array can only see RAM when drawing the screen.
The idea is mapping on higher ROM any of the banks as we need them, and we can use that data with RAM from 0x4000 to 0xffff, leaving on lower ROM the bank 0 with our code.
It is '''easy to support both CPC+ and Dandanator from a single code base ''' using macros.
Then generating both CRT and Dandanator ROMs is easytrivial. For example, these [https://github.com/reidrac/cpr-tools simple tools to make/dump CPC+ CPR cartridge files] can generate both formats (use RAW and padding flags to get a Dandanator ROM).
== Dandanator ==