SH4_WCR3
reg = _reg_read_4(SH4_WCR3);
_reg_write_4(SH4_WCR3, reg);
_reg_write_4(SH4_WCR3, BSC_WCR3_VAL);
_reg_write_4(SH4_WCR3, BSC_WCR3_VAL);
_reg_write_4(SH4_WCR3, 0x05555555);
_reg_write_4(SH4_PCIWCR3, _reg_read_4(SH4_WCR3));