Status Register - Xycom XVME-678 Manual

Chapter
4 -
Programming
4.6.2 Auxiliary Interrupt (AUX_INT, Port Address 31H)
This read-only port shows which auxiliary interrupts are pending.
DO is always low
D1-D7 define the status of the seven VMEbus interrupts. Bit numbers correspond to the interrupt levels
(i.e., bit 5 gives the status of VMEbus interrupt 5).
o
=
not pending
1
=
pending
4.6.3 Status Register 1 (STATUS1, Port Address 32H)
Bits DO through D3 of this read-only port give the interrupt latch status. The bits of this register are
described below. When DO through D3 are set to 1, the latch is set. When DO through D3 are set to 0,
the latch is not set.
DO gives the BERR 110 channel error latch status
D 1 is reserved as read only and is set to 0
D2 gives the SYSF AIL auxiliary NMI latch status
D3 gives the ABORT switch NMI latch status
D4-D7 are reserved, read-only, and set to 0
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