You need a Linux, with GIT, GCC, GNU make, and libpng development libraries (libpng-devel package on Debian, if I'm not mistaken). If you only have Windows - you can use Windows Subsystem for Linux, it should work. I'm not sure about Mac OS - I don't have a Mac.
Clone the repository: git clone https://github.com/MEGA65/open-roms.git
Edit the open-roms/src/,,config_ultimate64.s file, changing the strings near KEYCMD_F1, etc. If you don't need anything assigned to the key, put NO. If you want a string assigned, put the string in quotation marks. If you don't know how to type a given character, consult a PETSCII table here - take the hexadecimal code, and type it replacing dollar ($) with a backslash (), for example \5F is a CBM back-arrow sign (top left corner of C64 keyboard).
In the open-roms directory, execute command make - afterwards fetch your ROMs from open-roms/build directory. Note: ALWAYS take the new BASIC ROM even if the only change in the Kernal was changed function key definitions - this is enough to trigger incompatibility, and for the custom build 'ROM mismatch' bluescreen will be displayed by Kernal!
If you are not happy with the new function keys assignment - repeat starting from step 3 (no need to clone a new repository).

I'll keep this ticket open as a reminder to update documentation. We need:

a compilation guide
a link to the forum which is best to ask questions - this should be the best place.

Compile #59

Description