All code compiles out of box with the bass assembler by byuu.
I use a special version of bass by ARM9 which has been updated with GB Z80 output: https://github.com/ARM9/bass
I have included binaries of all the demos.
Special thanks to byuu, for making the higan emulator, & the bass assembler =D
Please check out higan, a cycle accurate GB Emulator: http://byuu.org/emulation/higan
Also thanks to beware & Duo, for helping me with my initial GB development.
I used the GBDEV wiki to help get me started: http://gbdev.gg8.se/wiki
Howto Compile:
All the code compiles into a single binary (ROMNAME.gb) file.
Using bass Run: make.bat
Howto Run:
I am testing on the accurate emulator BGB by beware for development
which has very nice debugger & tools including graphical VRAM viewer: http://bgb.bircd.org
You can also use GB emulators like higan & the MAME GB Driver.