Chapter 1 Hardware Installation
15
Step 3 Configure CPU
See the motherboard drawing for the FREQ1, FREQ2, FREQ3, and FREQ4
jumper locations.
Important
Perform the following steps to configure the
motherboard before installing a CPU.
CPU/Bus Frequency Ratio FREQ1, FREQ2, FREQ3, and FREQ4 are 2-pin bergs that set the
ratio of the internal CPU frequency to the bus clock.
Ratio
FREQ4
FREQ3
FREQ2
FREQ1
3.5x
Shorted
Shorted
OPEN
OPEN
4x
Shorted
OPEN
Shorted
Shorted
4.5x
Shorted
OPEN
Shorted
OPEN
5x
Shorted
OPEN
OPEN
Shorted
Pentium II CPU Frequencies
Internal
Speed
External
Speed
CPU / Bus
ratio
FREQ4
FREQ3
FREQ2
FREQ1
333 MHz
66 MHz
5x
Shorted
OPEN
OPEN
Shorted
300 MHz
66 MHz
4.5x
Shorted
OPEN
Shorted
OPEN
266 MHz
66 MHz
4x
Shorted
OPEN
Shorted
Shorted
233 MHz
66 MHz
3.5x
Shorted
Shorted
OPEN
OPEN
Cont’d
Содержание Atlantis Pentium II PCI ISA
Страница 1: ...Atlantis Pentium II PCI ISA Motherboard Guide MAN 773 11 20 97 ...
Страница 38: ......
Страница 75: ...Chapter 3 Programming the Flash ROM 71 ...