Unlike the Apple //c firmware, there is no free space in the //e firmware. Therefore sacrifices must be made. With that in mind, ROM eX comes in two flavors:
You must have Ruby and Rake installed, the CC65 suite, and probably some other things. Review the Rakefile. Author's development host runs MacOS X with the command line developer tools installed.
Change into the directory for your desired flavor and type 'rake' for a single ROM suitable for emulation or the later //e's CF ROM socket. Type 'rake split" to also get ROMs suitable for the CD and EF ROM sockets on earlier //es.
## Installing
This ROM can be run in emulators that allow specifying a custom ROM image. It is tested on Virtual ][.
Note that as of 2/7/2019, it has not been tested on actual hardware by the author, but as of 2/8/2019 Tony Diaz has reported success on a platinum //e.
To install in real hardware, the appropriate EPROMs must be programmed and installed in the system. A 27SF512 may work in //es equipped with a CF ROM socket, and 'rake sf512' will generate such an image (with 4 copies of the ROM in it).