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- DrWatson.TXT
-
- This document contains information on:
-
- A. What is DrWatson?
- B. How to install DrWatson
- C. Using DrWatson
- D. Where to send information gathered by DrWatson
- E. Additional details on DrWatson
-
-
- A. What is DrWatson?
- --------------------
- DrWatson is a diagnostic tool designed to provide developers
- with detailed information on the internal state of Windows
- when a system error such as an unrecoverable application
- error (UAE) occurs.
-
- DrWatson must be running at the time a UAE occurs in order
- to extract the required internal information from the system.
- DrWatson takes very little memory and does not affect
- performance, so we encourage you to install DrWatson if a UAE
- has occurred before.
-
- After DrWatson is installed, if another UAE occurs, valuable
- information will be collected and written to a special file
- in the WINDOWS directory. Microsoft can use this information
- to make the next version of Windows even better than
- Windows 3.0. Application vendors can also use this
- information to improve their applications.
-
-
- B. How to install DrWatson
- --------------------------
- DrWatson must be running at the time the system error occurs
- in order to collect the internal information from the system,
- so we recommend DrWatson be started automatically each time
- you start Windows.
-
- To start DrWatson automatically when you start Windows, do
- the following:
-
- 1) Copy DrWatson.EXE and toolhelp.DLL to the directory in
- which Windows is installed.
-
- 2) Open the WIN.INI file by using a text editor, such
- as NOTEPAD.
-
- 3) Add DrWatson to the LOAD= or RUN= line. You will find
- these lines located at the beginning of the WIN.INI file.
-
- 4) Save the WIN.INI file.
-
- 5) Restart Windows if you edited the WIN.INI file while
- you were running Windows.
-
- Alternatively, you can start DrWatson as you would start
- any other Windows application, by using the Program Manager
- or File Manager.
-
- Once started, DrWatson appears as an icon on your desktop.
-
-
- C. Using DrWatson
- -----------------
- While DrWatson is running, if a UAE occurs, DrWatson will
- automatically create a special file in your WINDOWS directory
- named DrWatson.LOG. It will also prompt you for details regarding the
- circumstances of how the UAE occured. Please include enough
- information to help our developers track the problem down. Each time
- a UAE occurs, DrWatson appends new data to this file.
-
- The DrWatson.LOG file will contain a large amount of data, most of
- which is not useful unless you are a developer and are familiar with
- debugging applications. This file is a standard text file so it can
- be viewed with a text editor if you wish to look at it.
-
- At this time, DrWatson does not detect all system errors,
- so don't be alarmed if DrWatson did not record information
- after a particular system error.
-
- D. Where to send information gathered by DrWatson
- -------------------------------------------------
- The Microsoft Windows development team wants to gather as
- much DrWatson data as possible. The data will be used to
- identify and correct problems in both Windows and Windows
- applications. There are a number of ways to send this data
- to us. (We prefer to receive this data in electronic form
- since that's easier to process.) In all cases, please
- include the name and phone number of a person we can contact
- in the event we need additional data.
-
- - Send the information contained in DrWatson.LOG via email
- to WINBETA at Microsoft.
-
- - Send a disk with the DrWatson.LOG file on it to Microsoft.
- The mailing address is:
- Microsoft Corporation.
- Attn: WINDOWS BETA PROGRAM 3/2
- One Microsoft Way
- Redmond, WA 98052-6399
-
- - Post the data contained in DrWatson.LOG in the "Microsoft
- Suggestion/Problem Report" form in the main Microsoft Connection
- area (MSCON) on Compuserve. There's an online form there to use for
- your convenience.
-
- - Print DrWatson.LOG, then FAX it to Microsoft. Mark it
- "Attn WINDOWS BETA PROGRAM 3/2". The Microsoft FAX number is
- (206) 883-8101.
-
- - Print DrWatson.LOG, then sent it Microsoft, mark "Attn
- WINDOWS BETA PROGRAM". The mailing address is listed above.
-
-
- E. Additional Technical Details on DrWatson
- --------------------------------------------
- This section describes some technical details about
- DrWatson, including the form of the DrWatson report and
- the various options that can be turned on and off. This
- section is probably not of interest to most users, but
- may be valuable to developers.
-
- Changing the Log File
- By default, the log file report is called "DrWatson.LOG".
- You can change the name and location of this file by adding
- a "logfile=" entry to the [DrWatson] section of WIN.INI.
- You can also redirect output to a serial or parallel device.
- For example, to send reports to a debugging terminal, add
- this line:
-
- [DrWatson]
- logfile=com1
-
- Report Format
- Each section of a DrWatson report can be disabled by adding
- it to the "skipinfo=" entry of the [DrWatson] section of
- WIN.INI. For example, to disable the module list output of
- a report, add this line:
-
- [DrWatson]
- skipinfo=module
-
- DrWatson Report Header
- The first section of the report indicates the DrWatson
- software version (0.72), time and date of event, the fault
- type ('Invalid Opcode'), selector:offset of the fault, and
- segment number and file name of the current application.
-
- For example:
-
- Dr. Watson 0.73 Failure Report - Fri May 17 14:11:29 1991
- MEM had a 'Exceed Segment Bounds (Read)' fault at MEM 1:1157
- $tag$ MEM Exceed Segment Bounds (Read) MEM 1:1157\
- repne scasb Fri May 17 14:11:29 1991
-
- This part of the report is mandatory; it cannot be disabled.
-
- CPU Registers
- The 16 bit CPU registers, segment registers linear base
- address and limit, whether the selectors are Code, Data, or
- NULL. This section is important, but you can disable it by
- adding "skipinfo=regs" to the [DrWatson] section of WIN.INI.
-
- 32 Bit CPU Registers
- If the CPU is a 386 or 486, the 32 bit register contents
- will be displayed, unless "skipinfo=32bit" is added to WIN.INI.
-
- Disassembly
- The instructions before and after the faulting instruction
- are disassembled. This section can be disabled with
- "skipinfo=disasm". The faulting instruction is marked with
- the (module name:symbol+offset) of that address. This last
- feature requires the presence of a .SYM file with debugging
- symbols in the same directory as the associated .EXE file.
-
- Stack Dump/Trace
- The stack dump shows stack frames, letting you know the
- calling sequence that produced the fault. This section
- can be disabled with the line "skipinfo=stack".
-
- Task List
- System tasks are all active applications. Disable with
- "skipinfo=tasks".
-
- Module List
- The module list is very large, and probably not vital.
- We recommend disabling it with "skipinfo=modules".
- It is sometimes useful to deduce the version of a driver
- or application by looking at the time/date/size of the
- file.
-
- System Info
- System info is miscellaneous information available.
- Disable it with "skipinfo=info".
-
- Other Reports
- At this point, DrWatson's GP Fault decoding logic is
- incomplete. We detect many possible GP faults, but
- not all. Examples we detect are null pointer usage,
- writing to code segments, segment limit violations.
- Other faults may occur that display as "Unknown". Let
- us know if that is a problem for you.
-