12
2.5 Watch-Dog Timer
The Watch-Dog Timer is enabled by reading port 443H. It should
be triggered before the time-out period ends, otherwise it will
assume the program operation is abnormal and will issue a reset
signal to start again, or activate NMI to CPU. The Watch-Dog
Timer is disable by reading port 043H.
•
JP6 : Watch-Dog Active Type Setting
JP6
DESCRIPTION
2-3
RESET WHEN WDT TIME-OUT
1-2
ACTIVATE NMI TO CPU WHEN WDT TIME-OUT
OPEN
DISABLE WDT
•
JP7: WDT Time-Out Period
PERIOD
1-2
3-4
5-6
7-8
1 sec.
OPEN
OPEN
CLOSE OPEN
2 sec.
OPEN
OPEN
CLOSE CLOSE
10 sec.
OPEN
CLOSE OPEN
OPEN
20 sec.
OPEN
CLOSE OPEN
CLOSE
110 sec.
CLOSE OPEN
OPEN
OPEN
220 sec.
CLOSE OPEN
OPEN
CLOSE
2.6 DiskOnChip™
Flash Disk
The DiskOnChip™
Flash Disk Chip(DOC) is produced by M-
Systems. Because the DOC is 100% compatible to hard disk and
DOS.Customer don‘ t need any extra software utility. It is just
“ plug
and play” ,easy and reliable. Right now the DOC is available from
2MB to 72MB.There also have PROMDISK-Chip™
can be used
with the same socket. There have two sockets for the DOC. Based
on the two sockets,customer could have two Flash Disk Drives.
And in the future the DOC and PROMDISK-Chip will upgrade
firmware to allow two flash disk chips combined to one drive.
At that time the total capacity will be up to 144MB.
The DiskOnChip will share only 8KB memory address for each
one
Summary of Contents for ROCKY 538TXV
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