Lenovo ThinkPad 770Z ThinkPad 770E/ED Supplement to the Users Guide - Page 22

Setting to 2-Channel IDE Mode, ThinkPad Configuration, Docking Station, IRQ Holder for PCI Steering

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Setting to 2-Channel IDE Mode 1 Open the ThinkPad Configuration program. 2 Click on the Docking Station ( ) button. 3 Change the IRQ value in IRQ Holder for PCI Steering to a value other than IRQ 11. 4 Select Enable IDE devices. The third IDE is automatically selected. 5 Select Secondary channel in the IDE channel selection list box. 6 Click on Disable Device in the warning message dialog box. 7 Click on OK to close the dialog box. 8 Select OK in the warning dialog box. The system restarts. If necessary, change the IRQ value assigned to PCI to 11. The following table shows the relationship between the devices and IRQ values: Device HDD UltraBay II Docking station 2-Channel IDE Default Mode IRQ 14, P-M IRQ 15, S-M Disabled 3-Channel IDE Mode IRQ 14, P-M IRQ 15, S-M IRQ 11, T-M and T-S 2-Channel IDE Mode IRQ 14, P-M IRQ 14, P-S IRQ 15, S-M and S-S Legend: 1. P-M: Primary-master 2. P-S: Primary-slave 3. S-M: Secondary-master 4. S-S: Secondary-slave 5. T-M: Third-master 6. T-S: Third-slave 16 IBM ThinkPad 770E/770ED User's Guide Supplement

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Setting to 2-Channel IDE Mode
1
Open the
ThinkPad Configuration
program.
2
Click on the
Docking Station
(
) button.
3
Change the IRQ value in
IRQ Holder for PCI Steering
to a
value other than IRQ 11.
4
Select
Enable IDE devices
.
The third IDE is automatically
selected.
5
Select
Secondary channel
in the IDE channel selection list
box.
6
Click on
Disable Device
in the warning message dialog box.
7
Click on
OK
to close the dialog box.
8
Select
OK
in the warning dialog box.
The system restarts.
If necessary, change the IRQ value assigned to PCI to 11.
The following table shows the relationship between the devices and
IRQ values:
Legend
:
Device
2-Channel IDE
Default Mode
3-Channel IDE
Mode
2-Channel IDE
Mode
HDD
IRQ 14, P-M
IRQ 14, P-M
IRQ 14, P-M
UltraBay II
IRQ 15, S-M
IRQ 15, S-M
IRQ 14, P-S
Docking
station
Disabled
IRQ 11, T-M
and T-S
IRQ 15, S-M
and S-S
1. P-M: Primary-master
2. P-S: Primary-slave
3. S-M: Secondary-master
4. S-S: Secondary-slave
5. T-M: Third-master
6. T-S: Third-slave
16
IBM ThinkPad 770E/770ED User's Guide Supplement