Strobe watchdog
Function: fdh
Subfunction: 02h
Purpose:
To strobe the watchdog.
Calling registers:
AH
fdh
AL
02h
DX
ffffh
Return registers:
None
Comments:
This function strobes the watchdog. Once the
watchdog is enabled, it has to be strobed at
least twice per timeout period or until the
watchdog is disabled. Otherwise, a system reset
will occur.
Programming example:
/* Inline assembly code for Borland C++ 3.1 */
asm {
mov
ax,0fd02h
mov
dx,0ffffh
int
17h
}
Disable watchdog
Function: fdh
Subfunction: 03h
Purpose:
To disable the watchdog.
Calling registers:
AH
fdh
AL
03h
DX
ffffh
Return registers:
None
Comments:
This function disables the watchdog. Once the
watchdog is enabled, it has to be strobed at
least twice per timeout period or until the
watchdog is disabled. Otherwise, a system reset
will occur.
Programming example:
/* Inline assembly code for Borland C++ 3.1 */
asm {
mov
ax,0fd03h
mov
dx,0ffffh
int
17h
}
80
Содержание XE-800
Страница 18: ...Figure 2 1 XE 800 SBC component diagram top 18 ...
Страница 19: ...Figure 2 2 XE 800 SBC component diagram bottom 19 ...
Страница 20: ...Figure 2 3 XE 800 SBC dimensions 20 ...
Страница 89: ...MOV AX 0fb0bh MOV DX 0ffffh INT 17h MOV aData AL if aData 1 printf U1 jumper is ON n 89 ...
