Xycom XVME-678 Manual page 137

5.6.7 Detennine Highest Priority Pending VMEbus Interrupt
XVME-678/688 Manual
July 1994
This function returns the level (1 to 7) of the highest priority VMEbus interrupt that is pending. Level
7 is the highest priority while Level 1 is the lowest. The calling program can select whether all VMEbus
interrupt levels are checked or just those currently enabled.
Int I5h
Function AFH
Call With:
Returns:
Subfunction 56H
AH
=
AFH
AL
=
56H
BX
=
Which VMEbus interrupt levels
o -
VMEbus interrupt levels that are enabled
1 - All VMEbus interrupt levels
If error: Carry Flag Set
If successful:
AH
=
Error Code
DI
=
"XY"
Carry Flag Clear
AH
=
0
DI
=
"XY"
BX
=
Highest priority pending VMEbus interrupt
0- None
1 - VMEbus interrupt level 1
2 - VMEbus interrupt level 2
3 - VMEbus interrupt level 3
4 - VMEbus interrupt level 4
5 - VMEbus interrupt level 5
6 - VMEbus interrupt level 6
7 - VMEbus interrupt level 7
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