【資料名稱】：QualcommWCDMA手機驅(qū)動(F400)

【資料作者】：LX

【資料日期】：2012.1.1

【資料語言】：中文

【資料格式】：DOC

【資料目錄和簡介】：

Qualcomm USB Host Driver version 2.0.3.0 for Windows 2000/XP/Server 2003

This readme covers important information regarding Qualcomm USB Host Driver
version 2.0.3.0 for Windows 2000, Windows XP and Windows Server 2003.

Table of Contents

1. Installation Notes
2. Major Features
3. What's New in This Release
4. Known issues
5. Build Information

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1. INSTALLATION NOTES

Please refer to Qualcomm document 80-V4609-1 Rev H for detailed instructions on
driver installation. The aforesaid document is encloded in the driver package.

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2. MAJOR FEATURES

1) Major bug fixes for operations under Windows XP, backward compatible with
Windows 2000. Support 64-bit Windows.

2) Introduced new solution to the Windows open handle issue. The solution makes
the USB virtual/PNP COM port's behavior similar to that of a physical COM port
when device is reset or disconnected.

3) The driver is re-designed to be reentrant, which may allow multiple device
connections on Windows XP over a single USB hub. Please note, multiple connections
on Windows 2000 or through multiple USB hubs on Windows XP may cause system
crash unless the devices completely remove their USB serial number string
from the USB descriptor.

4) Vitually eliminated use of global cancel spin lock. This not only boosts the
performance of the whole system but also makes the current driver much faster
from one USB transfer to another, thus makes short packet handling more efficient.

5) The driver is designed to be running safe with Intel Hyper-Threading processor
and multi-processor systems with Windows XP, and multi-processor systems with
Windows 2000.

6) Added true resident mode to the driver. Users can configure the driver to be a
true resident driver instead of a PNP driver at run-time via registry settings.
This feature itend to provide the ultimate solution to all the issues caused by
device reset/disconnection. Under the true-resident mode, the driver will maintain
its virtual(PNP) COM port(s) at all times and thus try to make the virtual(PNP)
COM port behave as same as a traditional/physical COM port when the device is
disconnected or reset. For details, please refer to section 9.4.2 in Qualcomm
document 80-V4609-1 Rev D. By default, the driver operates under PNP mode.

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3. What's New in This Release

1) Added support for 64-bit Windows (with AMD64 processor or IA64 processor).
2) Added support for Windows Server 2003 SP1 DDK build environment. The 64-bit
images need to be built under this environment.
3) Implemented a workaround for a synchronization issue in Windows dial-up
networking. The issue was that under a certain condition (during call setup)
the Windows dial-up networking would send IOCTL_SERIAL_WAIT_ON_MASK in the
uninterrupted fashion to the driver stack, causing the system to freeze.
4) Fixed the bug which could cause system crash (invalid memory access) when
system enters hibernation or wakes up from hibernation.
5) Fixed the bug that could crash system when minimum read size was configured
bigger (via the registry) than the default maximum USB transfer size.

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4. KNOWN ISSUES:

A user running CAIT 3.0.29 or older version with USB host driver 2.x version
may experience 100% CPU usage and CAIT may appear to be spining on something
without working properly. To solve this problem, the user needs to unselect
"Require phone on CTS transition" on Phone tab from Options->Configures CAIT
dialog box or change use_CTS to NO at cait.ini file. This issue is triggered by
the enhanced efficiency of the USB driver and is to be addressed in later CAIT
releases.

Compilation flag QCSER_TARGET_XP should NOT be defined with this version due to
unsolved issues with XP-specific function calls.

Rarely, when the modem connection is up but the device is reset or disconnected/
re-connected, modem application may not be able to talk to modem port. A workaround
is to perform a second reset or re-connection of the device. It's also recommended
that users obtain Mirosoft hotfix Q822112 to reduce the possibility of this problem.
This problem is fixed in Windows XP SP2.

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5. BUILD INFORMATION:

The following compilation flags are defined for customers to build the driver
to debug various issues related to host and device, they are not recommended
for other purposes.
ENABLE_LOGGING
QCSER_ENABLE_LOG_REC
QCSER_DBGPRINT
QCSER_DBGPRINT2
QCSER_TARGET_XP

IMPORTANT!!! To achieve best security and performance, all of the above features
should be turned off for commercial distributions. The free build binaries are
recommended for commercial distributions.

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Copyright (c) 2003-2006 QUALCOMM Incorporated
All rights reserved.