Xycom XVME-678 Manual page 134

Chapter 5 - XVME BIOS Functions
5.6.5 Enable/Disable Specific VMEbus Interrupts
This function allows specific VMEbus interrupt level AMIs to be enabled or disabled, depending on the
state of bit O. The previous state of the VMEbus interrupt mask is returned upon completion.
Int I5h
Function AFH Subfunction
54H
Call With:
AH
=
AFH
AL
=
54H
BX
=
Desired VMEbus interrupt mask operation
Bit 0 0
-
Disable indicated VMEbus interrupts
1
-
Enable indicated VMEbus interrupts
Bit 1
0
-
Leave VMEbus interrupt level 1 as is
1
-
Operate on VMEbus interrupt level 1
Bit 2 0
-
Leave VMEbus interrupt level 2 as is
1
-
Operate on VMEbus interrupt level 2
Bit 3 0
-
Leave VMEbus interrupt level 3 as is
1
-
Operate on VMEbus interrupt level 3
Bit 4
0
-
Leave VMEbus interrupt level 4 as is
1
-
Operate on VMEbus interrupt level 4
Bit 5
0
-
Leave VMEbus interrupt level 5 as is
1 - Operate on VMEbus interrupt level 5
Bit 6 0
-
Leave VMEbus interrupt level 6 as is
1
-
Operate on VMEbus interrupt level 6
Bit 7 0
-
Leave VMEbus interrupt level 7 as is
1
-
Operate on VMEbus interrupt level 7
Returns
appear on the following page.
5-30