8
MOTOROLA
The switches have the same orientation; with the system standing vertically, the switches operate as shown
in Figure 5
Figure 5. Sandpoint 3 SW1/SW2 Configuration Switches
All configuration switches should be changed with the power off; changes only take effect on a system
power-on reset. The system pushbutton reset is not necessarily sufficient.
3.1 SW1 Options
SW1 is located near the bottom of the Sandpoint 3 board, near the end of the fourth PCI slot. It controls the
features shown in Table 1:
Table 1. Sandpoint 3 SW1 Options
Switch
Name
Definition
Default
1
ROMSEL
ROM Selection
2
ROM1WP
ROM1 Write Protect
3
reserved
reserved
4
FRCPCI33
Force PCI to 33MHz
5
EXTCLK
Use external clock
6
SSCLK
Spread-Spectrum Clock
21
RIGHT = ON
LEFT =
OFF
