VIA WCE X86 IDE PIO Driver Registry Setting Supplement
6/2/2000
Copyright (C) 2000 VIA Technologies, INC.
1. Overview
This report describes an additional registry key for VIA's
IDE PIO driver for Windows CE. This key alters the way the driver
detects the on-board IDE ATA devices and avoids the system from
crashing when an IDE ATAPI device, such as a CD-ROM, is attached.
2. Background
The IDE driver is capable of simultaneously supporting up to
4 IDE ATA devices. The driver automatically detects as many IDE ATA
devices as attached to the target platform. But the system doesn't
usually have 4 ATA devices, which may result in a long time for
device detection. Moreover, the system may use an IDE ATAPI device,
such as a CD-ROM, which may cause the IDE driver to crash the system
because it doesn't support IDE ATAPI devices.
3. Registry setting
Add the "Detect" key under the
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\VIAIDE] so that the IDE driver
will detect the specified IDE ATA device(s) according to its setting,
as described below.
"Detect": the IDE device(s) that the driver will detect
bit 0:
1 to detect the primary master
0 to bypass the primary master
bit 1:
1 to detect the primary slave
0 to bypass the primary slave
bit 2:
1 to detect the secondary master
0 to bypass the secondary master
bit 3:
1 to detect the secondary slave
0 to ignore the secondary slave
4. Examples
Case I:
Use the following setting to detect only the primary master
and primary slave.
IF CEPC_IDE
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\VIAIDE]
"Dll"="VIAIDE.dll"
"Prefix"="DSK"
"Order"=dword:4
"Entry"="VIAIDEReg"
"Keep"=dword:1
"FSD"="FATFS.dll"
"Folder"="IDEDSK"
"Detect"=dword:3
ENDIF
Case II:
Use the following setting to detect only the primary master
and secondary master.
IF CEPC_IDE
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\VIAIDE]
"Dll"="VIAIDE.dll"
"Prefix"="DSK"
"Order"=dword:4
"Entry"="VIAIDEReg"
"Keep"=dword:1
"FSD"="FATFS.dll"
"Folder"="IDEDSK"
"Detect"=dword:5
ENDIF
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.