Octagon PC-500, User Manual

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17-3
PC-500 user’s manual Watchdog timer and hardware reset
Programming example:
/* Inline assembly code for Borland C++ 3.1 */
asm {
mov ax,0fd03h
mov dx,0ffffh
int 17h
}
≡
Hardware reset
The PC-500 has a button which allows you to reset the system without
turning off the power. This provides a more complete reset than the
<CTRL><ALT><DEL> method. The RESET command also accom-
plishes the same thing as the reset button. It is also possible to issue a
hardware reset through the opto-isolated inputs, either OPTOA or
OPTOB channels at J10. See the IRQ routing and opto IRQs chapter
for more information on opto channels. Refer to the component diagram
in the Quick start chapter for the location of the reset button.
WARNING!
When using COM1 as the console, the <CTRL><ALT> <DEL>
commands on the host system keyboard only reset the host
system. Use the RESET command to issue a hardware reset
on the PC-500.