Exception Address Register (Exc_Addr - Compaq AlphaServer ES45 Service Manual

D.5 Exception Address Register (EXC_ADDR)
The Exception Address Register (EXC_ADDR) is a read-only register
that is updated by hardware when it encounters an exception or
interrupt bit.
63
PC[63:2]
PAL
EXC_ADDR<0> is set if the associated exception occurred in PAL mode. The
exception actions are:
•
If the exception was a fault or a synchronous trap, EXC_ADDR contains the
PC of the instruction that triggered the fault or trap.
•
If the exception was an interrupt, EXC_ADDR contains the PC of the next
instruction that would have executed if the interrupt had not occurred.
2 1 0
LK99-0018A
Registers D-9