gbos.git - gbos - a tiny Unix-flavored OS for the Game Boy Color (kernel, shell, coreutils in C, RAM filesystem)

	Commit message (Collapse)	Author	Files	Lines
4 days	refactor: c/ -> usr/, compiled program blobs out of the source tree	user	1	-1/+0
	Userland sources live in usr/ (fits the Unix theme better than 'c'). SDCC output .bin blobs land in build/usr/ with the other build artifacts instead of littering the source dir; programs.asm INCBINs them from there. Byte-identical ROM.
6 days	C toolchain: run SDCC-compiled C programs as gbos processes	user	1	-0/+1
	- c/{gbos.h,crt0.s,libc.s,build.sh}: SDCC sm83 -> ROM-bank blob toolchain. libc syscall wrappers save/restore BC/DE/HL around rst $30 (trap clobbers them; SDCC expects them preserved). - build via SDCC native asxxxx path (sdasgb/sdldgb), crt0 linked first so _start is the $4000 entry; blob INCBIN'd into a ROM bank. - chello.c: prints a message + getpid() -> runs as 'chello' shell command. - Makefile: auto-build c/*.bin, track as a dep of programs.o; gitignore blobs. - README: document the C toolchain + the SDCC --asm=rgbds codegen bug that forced the native-toolchain approach. - verified: '$ chello' -> 'hello from C on gbos!' / 'my pid is 2'.