APOLLO Technical Manual
Jumpers and connectors
Jumpers
There are three jumpers on the APOLLO with a total of eight user-selectable jumper
positions. These are summarized in the following table:
Jumper
Description
JP1
Performs two functions:
•
•
PCI Grant/PCI Auxiliary power selection.
BIOS write protection.
JP2
Includes four positions, as follows:
•
•
•
Two user-defined positions.
CMOS memory reset.
Tamper detect (TPM).
JP3
RS485/RS422 termination resistor
enable/disable.
Further details are provided about each of these in the following sections.
JP1 – PCI power selection and BIOS write protection
This jumper has two functions. Use it to select the function of PCI slot pin A14 and also
to enable or disable BIOS write protection. The jumper is illustrated in the following
diagram:
FWH PCI
Each position is explained in more detail below.
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