I2O_SG_COUNT_MASK
# define _F_getCount(w,x,y) (*((U32 __FAR__ *)(&((w)->x)))&I2O_SG_COUNT_MASK)
&= 0xFFFFFFFFL - I2O_SG_COUNT_MASK);\
|= (z) & I2O_SG_COUNT_MASK)
