AHC_HS_MAILBOX    234 dev/ic/aic7xxxvar.h AHC_HS_MAILBOX	= 0x00400,	/* Has HS_MAILBOX register */
AHC_HS_MAILBOX    267 dev/ic/aic7xxxvar.h |AHC_HS_MAILBOX|AHC_NEW_TERMCTL|AHC_LARGE_SCBS