shithub: rgbds

ref: e2136d60b2db6c714a0c7c84f38bbcad5c519b71
dir: /test/asm/ff00+c-bad.err/

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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)!