Acrosser Technology AR-B1320 CPU, User Manual

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2-11
2.11 WATCHDOG TIMER
The AR-B1320 is equipped with a programmable time-out period watchdog timer. Actually, the
watchdog timer is provided by the ALI M6117C chipset. You can use the program to enable the
watchdog timer. Once you have enabled the watchdog timer, the program should trigger it every
time before it times out. If your program fails to disable this timer before it times out because of a
system hang-up, it will generate a reset signal to reset the system or trigger an IRQ or NMI signal
to tell your program that the watchdog has timed out. The time-out period can be programmed to
be 30.5
£ g
seconds to 512 seconds with 30.5
£ g
seconds per step.
2.12 FLASH DISK
The AR-B1320 supports three kinds of flash disks. They are Acrosser’ s SSD , DiskOnChip , and
DiskOnModule . For the SSD, AR-B1320 provides two 32-pin PLCC sockets and 1 32-pin
JEDEC DIP socket, which may be populated with up to 1.5MB of flash disk. The 32-pin JEDEC
DIP socket supports the DiskOnChip from 2MB to 144MB. The DiskOnModule is connected to
the onboard IDE connector. All the flash disks are ideal for diskless systems, and are also highly
reliable for high-speed access applications, as controllers for industrial use, or line test
instruments, etc.