Casio IT-800 Series Software Manual page 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 F igure 2.4) to confirm memory initialization appears. The R Trigger key is used to
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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 "
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
OS
Memory
Soft Reset No
Full Reset Reload
Hard Reset Reload
User Disk Reload
Clean
Power-on Reset Reload
Note:
"No" in the table indicates that the content in memory is not initialized by the reset.
RAM
RootDisk
Program
Memory
Initialize No
Initialize Initialize
Initialize No
Initialize Initialize
Initialize No
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D SKClean" for detail.
3
FlashDis Clock
Registry
k (RTC)
No No No
No Initialize No
No No Initialize
Initialize Initialize No
No No No/Initial
ize
E2PROM
Individu Distribut
al ID or ID
No No
No No
No No
No No
No No