Interrupt Flag Bit - Advantech PCI-1750SO User Manual

3.4.6

Interrupt Flag Bit

The "interrupt flag" bit is a flag indicating the status of an interrupt. It is a readable
and writable bit. Read the bit value to find the status of the interrupt, write "1" to this
bit to clear the interrupt. This bit must be cleared in the ISR to service the next incom-
ing interrupt.
Table 3.4: Interrupt flag bit values
F0 & F1
Read
Write
Interrupt status
1 Interrupt
0 No Interrupt
1 Clear Interrupt
0 Don't Care
21 PCI-1750/PCI-1750SO User Manual