Motorola HC12 - page 279

Assembler Messages
Message Codes
MCUez HC12 Assembler User’s Manual
MOTOROLA Assembler Messages 279
12.3.39 A2333: Forward Reference not Allowed
Type: Error
Description: A forward reference has been detected in an EQU instruction.
This is not allowed.
Example:
CstSec: SECTION
label: DCB.B 10, $61
equLab: EQU label2
...
label2: DC.W $6754
…
Tip: Move the EQU after the definition of the label it refers to.
Example:
CstSec: SECTION
label: DCB.B 10, $61
...
label2: DC.W $6754
…
equLab: EQU label2 + 1