IOP_REG_ID        868 drivers/scsi/advansys.c #define AscReadChipDvcID(port)            (uchar)inp((port)+IOP_REG_ID)
IOP_REG_ID        869 drivers/scsi/advansys.c #define AscWriteChipDvcID(port, data)     outp((port)+IOP_REG_ID, data)