System Board Jumper Block Settings - Mitsubishi Electric apricot VS660 System Product Manual

Table 5-1. System Board Jumper Block Settings
Jumper in
Figure 5-2 Function
Jumpers Reserved
J2G1,
J10C2
J10C3 Reset CMOS settings to default
CMOS RAM values
J10C3 Clear password
J10C4 ISA bus clock speed:
sets the ISA bus to a slower or
faster setting.
J10C4 Enables/disables access to
Setup Program
J10K1 CPU Voltage Regulator: some
upgrade processors may require
changing from the default VR
setting to the VRE setting.
System Product Guide
Pins Jumpered
CAUTION: These jumpers were set by the
factory for your system; do not change
these jumpers from the factory setting.
2-3 = Normal mode (Default)
1-2 = Reset CMOS settings
5-6 = Normal mode (Default);
4-5 = Clear password
2-3 = 8.33 MHz (50 MHz CPU bus)
7.5 MHz (60 MHz CPU bus)
8.25 MHz (66 MHz CPU bus)
(Default)
1-2 = 8.33 MHz (50 MHz CPU bus)
10 MHz (60 MHz CPU bus)
11 MHz (66 MHz CPU bus)
5-6 = Setup program can be
accessed (Default)
4-5 = Setup program access
disabled
2-3= VR mode (3.3 V - 3.465 V) (Default)
1-2= VRE mode (3.465 V - 3.63 V)
Caution: This jumper should only be
changed to the VRE setting if
documentation that came with your
upgrade CPU indicates that the required
voltage must be between 3.465 V and
3.63 V
5-5