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Chapter 1 Hardware Configuration
13
1.9.3 CMOS clear (J6)
The PCA-6175 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 J6
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 1-4: CMOS clear jumper settings (J6)
Function Jumper setting
Keep CMOS data 1-2 closed
Clear CMOS data 2-3 closed
1.9.4 Watchdog timer output (J8)
The PCA-6175 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-6175 will recover from a software failure or an
EMI problem. The J8 jumper settings control the outcome of what the
computer will do in the event the watchdog timer is tripped.
Table 1-5: Watchdog timer output (J8)
Function Jumper setting
IRQ11 1-2 closed
Reset 2-3 closed
1
1
1
1