Acrosser Technology AR-B1380, User Manual

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AR-B1380/AR-B1380A User’ s Guide
Page 43
Time Factor Time-Out Period (Seconds)
80H 3
81H 6
82H 12
83H 18
84H 24
85H 30
86H 36
87H 42
Table 5-1 Time-Out Setting
If you want to generate an IRQ15 signal to warn your program when the watchdog times out, the following
table lists the relation of the timer factors between time-out periods. And if you use the IRQ15 signal to
warn your program when the watchdog timer times out, please enter the BIOS Setup, in the <Peripheral
Setup> menu, set the two items <OnBoard PCI IDE> and <IDE Prefetch> to
Primary .
Time Factor Time-Out Period (Seconds)
0C0H 3
0C1H 6
0C2H 12
0C3H 18
0C4H 24
0C5H 30
0C6H 36
0C7H 42
Table 5-2 Time-Out Setting
If you want to generate an IRQ11 signal to warn your program when the watchdog times out, the following
table lists the relation of timer factors between time-out periods. And if you use the IRQ11 signal to warn
your program when the watchdog times out, please enter the BIOS Setup, in the <Peripheral Setup> menu,
set the two items <OnBoard PCI IDE> and <IDE Prefetch> to
Primary .
Time Factor Time-Out Period (Seconds)
0E0H 3
0E1H 6
0E2H 12
0E3H 18
0E4H 24
0E5H 30
0E6H 36
0E7H 42
Table 5-3 Time-Out Setting
NOTE
1. If you program the watchdog to generate an IRQ15 or IRQ11 signal when it times out, you should initial
an IRQ15 interrupt vector and enable the second interrupt controller (8259 PIC) in order to enable CPU to
process this interrupt. An interrupt service routine is required too.
2. Before you initialize the interrupt vector of IRQ15/IRQ11 as well as enable the PIC, please enable the
watchdog timer in advance. Otherwise, the watchdog timer will generate an interrupt at the time watchdog
timer is enabled.