User`s guide

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A
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U
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3-16
(4) Write Data to Configuration Register
Example 1: Write data 68h to INDEX 3Bh
Unlock_Cfg_Reg ;Unlock configuration register
Mov al, 3bh ;Points to index 3bh
Out 22h, al
Nop
Nop
Mov al, 68h
Out 23h, al ;Write data
Nop
Nop
Lock_Cfg_Reg ;Lock configuration register
Note: The utility diskette includes the watchdog utility files, “WD6117C.EXE” and “WD6117C.CPP.”
“WD6117C.EXE” demonstrates how to set\ enable\disable the watchdog timer.
“WD6117C.CPP” is the source file of the “WD6117C.”
3.16 USING THE FLASH DISK
The AR-B1320 provides two 32-pin PLCC sockets, one 32-pin JEDEC DIP socket, and 1
DiskOnModule socket.
If small page (less or equal 512 bytes per page) 5V FLASHs were used, you could format FLASH
disk and copy files onto FLASH disk just like using a normal floppy disk. You can use all of the
related DOS command (such as COPY, DEL…etc.) to update files on the 5V FLASH disk.
The write protect function allows you to prevent your data on small page 5V FLASH or SRAM disk
from accidental deletion or overwrite.
The two 32-pin PLCC sockets and 32-pin JEDEC DIP socket may be populated with up to 1.5MB
flash disks. The 32-pin JEDEC DIP socket supports from 2MB to 144MB of DiskOnChip. The
following table shows the combinations of the SSD and DiskOnChip:
SW1-3 U2 (PLCC32) U5 (PLCC32) U12
(DIP32)
Total
Flash
(SSD)
DiskOnChip Remark
Off Empty Empty Empty 0KB Disabled Factory
Preset
Off 512KB Flash Empty Empty 512KB Disabled
Off 512KB Flash 512KB Flash Empty 1MB Disabled
Off 512KB Flash 512KB Flash 512KB
Flash
1.5MB Disabled
On Empty Empty DiskOnChip 0KB Enabled
On 512KB Flash Empty DiskOnChip 512KB Enabled
On 512KB Flash 512KB Flash DiskOnChip 1MB Enabled
Table 3-10 Flash Disk Usage