Specifications

E PENTIUM® PRO PROCESSOR AT 150, 166, 180, and 200 MHz
79
8.2.2.1. Socket 8 Pinout
Socket 8 is shown in Figure 46 along with the VRM
(Header 8) connector. Refer to Section 7.2, for pin
listings of the Pentium Pro processor. The OverDrive
processor pinout is identical to the Pentium Pro
processor pinout.
Descriptions of the upgrade specific pins are
presented in Table 30. Note the location of pin A1 in
relation to the cam shelf position. If the socket has
the cam shelf located in a different position, then
correct insertion of the OverDrive processor may not
be possible. See Section 8.2.2.2. for space
requirements.
Socket 8
Upgrade Pins
Header 8
1
2
3
4
5
6
7
8
9
Vcc5
AF
AG
AE
UP#
Pin A1 Location
ZIF Handle Cam Shelf
Figure 46. OverDrive
®
Processor Pinout
Table 30. OverDrive
®
Processor Signal Descriptions
Pin Name Pin # I/O Function
V
CC
5 AG1 Input +5 V Supply required for OverDrive processor fan/heatsink.
UP# AG3 Output This output is tied to V
SS
in the OverDrive processor to indicate the
presence of an upgrade processor. This output is an open in the
Pentium
®
Pro processor.
NOTE:
• Refer to Section 8.3. for a functional description of the above signals.