[ERROR]
The SET directive does not allow a reference to an external label.
XDEF setLab
const: SECTION
lab: DC.B 6
setLab: SET $77AA
SET labels initialized with absolute expressions can be defined in a special file to be included by assembly files, or the EQU directive can be used.
XDEF setLab
const: SECTION
lab: DC.B 6
setLab: EQU $77AA
SET Directive