The FQB directive may have one or more operands separated by commas. The 32-bit
value corresponding to each operand is stored into four consecutive bytes of
the object program. The storage begins at the current program counter. If a
label is present it is assigned the address of the first 32-bit value. Multiple
operands are stored in successive bytes. The operand may be a numeric constant,
a character constant, a symbol, or an expression. If multiple operands are
present, one or more of them can be null (two adjacent commas), in which case
four bytes of zero will be assigned for that operand.