Casio IT-800 Series, Software Manual, Page: 29 / 325

29
User Disk Clean
This operation is carried out if Fn and CLR and “.” keys are held down at the same time and then
the reset switch is pressed for a period of one second or longer that formats the RootDisk and
FlashDisk and initializes the RAM to the factory default and then reloads the OS files to the
RAM.
A message (see
3
Figure 2.4) to confirm memory initialization appears. The R Trigger key is used to
confirm the User Disk Clean.
Figure 2-4
After the R Trigger key is pressed twice, the UserDisk is formatted and the RAM is initialized to
the factory default (see note).
Figure 2-5
Notes:
•
Distributor ID in E2PROM is not cleared by performing the User Disk Clean .
•
The utility to carry out the User Disk Clean is available. See “
3
DSKClean” for detail.
Power-on Reset
This is a state occurred on the terminal after the battery pack and memory backup battery are
demounted and then put back into the terminal and then the Power switch is turned on for the first
time. When the Power switch is turned on in this state, the Boot Loader performs reloading the OS
files (RTC is initialized if it is necessary).
The table shows the respective states and data in the components and devices when the reset
occurs.
Table 2.14
RAM E2PROM
OS
Memory
Program
Memory
RootDisk
FlashDis
k
Registry
Clock
(RTC)
Individu
al ID
Distribut
or ID
Soft Reset No Initialize No No No No No No
Full Reset Reload Initialize Initialize No Initialize No No No
Hard Reset Reload Initialize No No No Initialize No No
User Disk
Clean Reload Initialize Initialize Initialize Initialize No No No
Power-on Reset Reload Initialize No No No No/Initial
ize
No No
Note:
“No” in the table indicates that the content in memory is not initialized by the reset.