Home Page Forums MAME MAME Adding card with loadable ROM

Hi all,

I have a couple of devices I want to implement one for the RM Nimbus, and another for the CoCo / Dragon, that implement a pageable ROM that isn't fixed.
So I want to have the rom loadable from a file at runtime like a floppy disk etc.

Are there any examples of such a device that are known about.

Cheers.

Phill.