SCR_REG_OFS2
(0xe1000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))
(0xe0000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))
(0xe1000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))
(0xe0000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))