str_with_attr game_over_string "GAME OVER", 0x1F
    

game_over_string:
'G',0x1F,'A',0x1F,'M',0x1F,'E',0x1F,' ',0x1F,'O',0x1F,'V',0x1F,'E',0x1F,'R',0x1F
    

macro str_with_attr label_name, str, attr
        label_name:
        iterate char, str
            db char, attr
        end iterate
end macro
    

macro str_with_attr label_name, str, attr
        label_name:
        repeat lengthof str
                db (str shr ((%-1) * 8)) and 0xff
                db attr
        end repeat
end macro    

macro str_with_attr label_name, str, attr
        local area_label
        label_name:
        virtual at 0
            area_label::
                db str
        end virtual
        repeat sizeof area_label
                load char : byte from area_label : %-1
                db char, attr
        end repeat
end macro    

Thank you so much Serke, I have a lot to learn. Could you please explain a little bit the first example? It looks great, but I am having a hard time understaing how it works.

By the way, do you know if there is any documentation about fasmg macro syntax besides the official fasmg user manual?

Best regards.

Thank you for taking the time to write such a detailed explanation. In the first example, when you say that the string is implicitly converted to a number, do you mean a sequence of bytes? Otherwise there would be a limit of bits depending on the target processor (for example, 8 bytes in x64). Also, the order is little endian, is that dependant on the target processor or is it always the same order regardless of the processor?

As for the second example, I suppose the use of "virtual at 0" is some kind of "discard" area that is only valid while the macro is being executed, am I right?

struc (label_name) str_with_attr str, attr
        local area_label
        label_name:
        virtual at 0
            area_label::
                db str
        end virtual
        repeat sizeof area_label
                load char : byte from area_label : %-1
                db char, attr
        end repeat
end struc

game_over_string str_with_attr "GAME OVER", 0x1F