pre-build ROMs now have platform-specific banners

bin/REEADME.txt

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+Follow these rules, or bad things will happen!
+
+
+- Don't mix ROMs for different platforms - use generic BASIC with generic KERNAL, Mega65 BASIC with Mega65 KERNAL, etc.
+
+- Don't mix these ROMs with any other ROMs; the only exception is CHARGEN, this one is fully interchangeable.
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+- Don't mix ROMs from different builds/versions (again, CHARGEN is an exception).
+
+- The generic ROM set should be compatible with any C64-compatible machine; platform-specific ROMs might not work on other platforms.
+
+
+Have fun!