def fzero equs "startof(\"test\")"
section "test", rom0
ld a, $8000_0000 / (fzero - 1)
ld a, 1 << (fzero - 1)
ld a, 1 << (fzero + 32)
ld a, (fzero - 1) >> 1
ld a, 1 >> (fzero - 1)
ld a, 1 >> (fzero + 32)
ld a, 1 >>> (fzero - 1)
ld a, 1 >>> (fzero + 32)

; We rely on this landing at address $0000, which isn't *guaranteed*...
assert startof("test") == 0