Intel J1850 FH8065301455200 Manuale Utente

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FH8065301455200
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PCU – Intel
®
 Legacy Block (iLB) Overview
1140
Datasheet
23.2.2
Non-Maskable Interrupt
NMI support is enabled by setting the NMI Enable (NMI_EN) bit, at IO Port 70h, Bit 7, 
to 1b. 
Non-Maskable Interrupts (NMIs) can be generated by several sources, as described in 
Table 168. NMI Sources
NMI Source
NMI Source 
Enabler/
Disabler
NMI Source 
Status 
Alternate Configuration
SERR# goes active 
NOTE: A SERR# is only generated 
internally in the processor)
NSC.SNE
NSC.SNS
All NMI sources may, 
alternatively, generate a SMI 
by setting 
GNMI.NMI2SMIEN=1b 
The processor uses 
GNMI.NMI2SMIST for 
observing SMI status
IOCHK# goes active 
NOTE: A IOCHK# is only generated as a 
SERIRQ# frame 
NSC.INE
NSC.INS
ILB_NMI goes active
NOTE: Active can be defined as being 
on the positive or negative edge 
of the signal using the 
GNMI.GNMIED register bit.
GNMI.GNMIED
GNMI.GNMIS
Software sets the GNMI.NMIN register bit
GNMI.NMIN
GNMI.NMINS