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Annotation of researchv10dc/sys/lib/low.star, revision 1.1

1.1     ! root        1: #
        !             2: # template for system control block for star (11/780)
        !             3: #
        !             4: 0x4    i       Xmachcheck      # machine check interrupt
        !             5: 0x8    i       Xkspnotval      # kernel stack not valid
        !             6: # 0xc  i       Xpowfail        # power fail
        !             7: 0x10   t       Xprivinflt      # privileged instruction
        !             8: 0x14   t       Xxfcflt         # xfc instruction
        !             9: 0x18   t       Xresopflt       # reserved operand
        !            10: 0x1c   t       Xresadflt       # reserved addressing
        !            11: 0x20   t       Xprotflt        # protection and pt length violation
        !            12: 0x24   t       Xtransflt       # address translation not valid fault
        !            13: 0x28   t       Xtracep         # trace pending
        !            14: 0x2c   t       Xbptflt         # bpt instruction
        !            15: 0x30   t       Xcompatflt      # compatibility mode fault
        !            16: 0x34   t       Xarithtrap      # arithmetic trap
        !            17: 0x40   t       Xsyscall        # chmk
        !            18: 0x44   i       Xchmx           # chme
        !            19: 0x48   i       Xchmx           # chms
        !            20: 0x4c   t       Xchmx           # chmu
        !            21: # 0x50                         # sbi silo compare; VMS ignores it too
        !            22: 0x54   i       Xmemerr         # memory CRD or RDS
        !            23: 0x58   i       Xmemerr         # SBI alert; assume memory controller
        !            24: 0x5c   i       Xsbiflt         # SBI fault
        !            25: 0x60   i       Xwtime          # async write timeout
        !            26: 0x88   t       Xastflt         # software 2: reschedule nudge, profile
        !            27: 0x8c   t       Xqsched         # software 3: stream queue scheduling
        !            28: 0xa0   i       Xsoftclock      # software 8: soft clock        
        !            29: 0xc0   i       Xhardclock      # clock
        !            30: 0xf8   i       Xcnrint         # console receiver
        !            31: 0xfc   i       Xcnxint         # console transmitter

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