Acrosser Technology 486DX2 Guide de l'utilisateur télécharger pdf (Page 19)

’

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 30.5μseconds to 512 seconds with 30.5μseconds 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.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 53 54

Pas de commentaire

Acrosser Technology 486DX2 Guide de l'utilisateur Page 19