Syntax Error: Undefined Label: 'LABELNAME'

Question

I am getting:

Syntax Error: Undefined Label: 'LABELNAME'

when trying to compile the code with the this (assembler 6800IDE from https://www.hvrsoftware.com/6800emu.htm):

    BRA LABELNAME
LABELNAME: LDAA #0

Answer 1

Label definitions are not supposed to contain :. So replace:

LABELNAME: LDAA #0

with:

LABELNAME LDAA #0

to have:

    BRA LABELNAME
LABELNAME LDAA #0