error: 'mac' is not a numeric symbol
    at non-numeric-symbol.asm(4)
error: 'mac' is not a numeric symbol
    at non-numeric-symbol.asm(5)
error: 'mac' is not a numeric symbol
    at non-numeric-symbol.asm(6)
error: 'mac' is not a numeric symbol
    at non-numeric-symbol.asm(9)
error: 'mac' is not a numeric symbol
    at non-numeric-symbol.asm(10)
error: 'mac' is not a numeric symbol
    at non-numeric-symbol.asm(11)
Assembly aborted with 6 errors!