16
JP8: ISA Clock Select
This jumper sets the ISA clock of different CPUs.
ISA Clock
JP8
PCI Clock/3
(for Bus Clock = 50 MHz CPU)
Open
PCI Clock/4
(for Bus clock = 60/66 MHz CPU)
Close
(default)
+
–
JP8
JP8
Note: 1. ISA clock is controlled when the BIOS finishes chipset
initial.
2. ISA clock can be changed only when BIOS Auto
Configuration is disabled and the default setting is
8.33MHz, no matter what the PCI clock is.