OFF) a jumper, you remove the clip. Sometimes a jumper consists of a set of three pins, labeled 1, 2, and 3. In this case you connect either pins 1 and 2, or 2 and 3. A pair of needle-nose pliers may be useful when setting jumpers.
1.7.2 CMOS clear (J1)
The PCA-6186 CPU card contains a jumper that can erase CMOS data and reset the system BIOS information. Normally this jumper should be set with pins 1-2 closed. If you want to reset the CMOS data, set J1 to 2-3 closed for just a few seconds, and then move the jumper back to 1-2 closed. This procedure will reset the CMOS to its default setting.
Table 1.3: CMOS (J1)
* Keep CMOS data 1-2 closed
1
Clear CMOS data 2-3 closed
1 1
* default setting
1.7.3 Watchdog timer output (J2)
The PCA-6186 contains a watchdog timer that will reset the CPU or send a signal to IRQ11 in the event the CPU stops processing. This feature means the PCA-6186 will recover from a software failure or an EMI problem. The J2 jumper settings control the outcome of what the com- puter will do in the event the watchdog timer is tripped.
