ref: a96aa1725f6d0760d3df39c5a1a44eb196f7c8c6
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)!