11.3.2 .DB8 directive

Forward reference in a .DB8 directive is prohibited, no error occurs even when a .DB8 directive is forward referenced. Define the symbol before it is a .DB8 directive in order to prevent forward reference.

Example

        .DB8    SYM1            ; Forward reference is prohibited
SYM1    .EQU    0x12345         ; Define the symbol after it is a .DB8 directive
 
SYM2    .EQU    0x12345         ; Define the symbol before it is a .DB8 directive
        .DB8    SYM2            ; Backward reference can be described.