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CheckSave::
ld a, BANK(sCheckValue1) ; aka BANK(sCheckValue2)
call OpenSRAM
ld a, [sCheckValue1]
ld b, a
ld a, [sCheckValue2]
ld c, a
call CloseSRAM
ld a, b
cp SAVE_CHECK_VALUE_1
jr nz, .ok
ld a, c
cp SAVE_CHECK_VALUE_2
jr nz, .ok
ld c, $1
ret
.ok
ld c, $0
ret
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