Xycom XVME-678 Manual page 117

5.4.2 Set ANMI Group Configuration
XVME-678/688 Manual
July 1994
The interrupt the ANMls generate-IRQ1O or NMI-can be set by calling this function. The previous
configuration is returned upon completion.
Int ISh
Function AFH
Call With:
Returns:
Subfunction 21H
AH
=
AFH
AL
=
21H
BX
=
Desired ANMI group configuration
Bit 0 0 - ANMI to use NMI
1 ANMI to use IRQ10
Bit 7 0 ANMI group disabled
1 ANMI group enabled
If error: Carry Flag Set
If successful:
Note:
AH
=
Error Code
DI
=
"XY"
Carry Flag Clear
AH
=
0
DI
=
"XY"
BX
=
Previous ANMI group configuration
Bit 0 0 - ANMI to use NMI
1 ANMI to use IRQ10
Bit 7 0 ANMI group disabled
1 ANMI group enabled
When enabled ANMls come in on NMI or IRQI0 (see sections 5.4.1 and 5.4.2), it is the responsibility
of users to ensure that IRQ 10-if used-is enabled
via
the 8259 and that an appropriate interrupt handler
or NMI handler is provided. MS-DOS allows users to directly manipulate the 8259 and the interrupt
vector table. Other operating systems usually provide a service for attaching to and enabling specific
PC/AT IRQs, but tend to be less flexible when dealing with NMls. Check the operating system
documentation for proper NMI handling.
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