; https://k1.spdns.de/Develop/Projects/zasm/Documentation/z71.htm
org 0x100
label_100
nop
label_101
assert $$ == 0x101
assert $ == 0x101
phase 0x200
assert $$ == 0x101
assert $ == 0x200
label_200
nop
label_201
dephase
label_102
assert label_100 == 0x100
assert label_101 == 0x101
assert label_102 == 0x102
assert label_200 == 0x200
assert label_201 == 0x201