----------------------------------------------------------------
R_XSTORMY16_NONE 0 none none none
R_XSTORMY16_32 1 32 S + A none
-R_XSTORMY16_16 2 16 S + A none
+R_XSTORMY16_16 2 16 S + A either
R_XSTORMY16_8 3 8 S + A unsigned
R_XSTORMY16_PC32 4 32 S + A - P none
R_XSTORMY16_PC16 5 16 S + A - P signed
computation perfomed in the 'Calculation' column is ignored.
'signed' means that the overflow is only reported if it happens when
the values are treated as signed quantities. 'unsigned' is the same,
-except that the values are treated as unsigned qunatities. 'either'
+except that the values are treated as unsigned quantities. 'either'
means that overflow is reported for either signed or unsigned
overflow.