ref: 20fd6eabbb574a31b559c2149315d3771aa66b14
dir: /test/asm/ff00+c-bad.err/
ERROR: ff00+c-bad.asm(8): Expected constant expression equal to $FF00 for "$ff00+c" ERROR: ff00+c-bad.asm(9): Expected constant expression equal to $FF00 for "$ff00+c" error: Assembly aborted (2 errors)!