HOT-613 User's Manual 9
CPU Clock Speed Selection
HOT-613 mainboard features a clock generator to provide adjustable System Bus Clocks
and PCI Bus Clocks. JP8 and JP9 are 2-pin jumper that determine the System Bus Clock
from 50 MHz to 66 MHz and PCI Bus Clock from 25MHz to 33MHz.
HOT-613 mainboard also provides Jumper JP4, JP5, JP6, and JP8 to figure the CPU Core
Clock multiplier. By inserting or removing jumper caps on those jumpers, the user can
change the
System Bus Clock
/
CPU Core Clock
ratio from 1 : 2 to 1 : 4.
System Bus Clock & PCI Bus Clock Selection - JP8, JP9
System Bus Clock
50 MHz
60 MHz
66 MHz
PCI Bus Clock
25 MHz
30 MHz
33 MHz
CPU Frequency Multiplier Selection - JP4, JP5, JP6, JP7
Frequency
Multiplier
2 X
2.5 X
3 X
3.5 X
4 X
Pentium Pro Processor Frequency Reference Table
Pentium Pro
System Bus
Clock - JP8,
JP9
Multiplier - JP4,
JP5, JP6, JP7
Remark
180 MHz
60 MHz
3 X
200 MHz
66 MHz
3 X
Factory Default
