CuteMouse driver v1.9. Copyright (c) 1997-2002 Nagy Daniel Release date: 2002/10/01 License: -------- CuteMouse is released under the terms of the GNU Public License (GPL). For further information please read the file COPYING. Description: ------------ CuteMouse is a mouse driver which supports many protocols of serial and PS/2 mice. It can search for a serial mouse at all COM ports or only at a specified port. An important CuteMouse feature is its small memory footprint: the resident part (TSR) occupies less than 3.5K. CuteMouse can also install itself in upper memory, when available, without requiring external utilities such as the DOS 'lh' (loadhigh) command. CuteMouse supports cursor drawing in all standard graphics and text modes with any screen size. These are automatically detected whenever the video mode or the screen size is changed or reset functions are called. You can subscribe to the CuteMouse discussion group at the official homepage http://cutemouse.sourceforge.net or by sending an empty email to . CuteMouse is part of the FreeDOS project at http://www.freedos.org Details: -------- CTMOUSE supports standard Mouse Systems, Microsoft and Logitech serial and PS/2 protocols. By default, when searching for a connected mouse, the PS/2 port is checked first, then all COM ports are scanned. Option /S, whose syntax is described in the help screen, disables PS/2 support and can specify the COM port to be checked for a mouse connection and its IRQ line; option /P disables serial protocols. If option /S is present in the command line, but PS/2 support is also required, then option /P must also be present. If a COM port number is not specified with the /S option, then CTMOUSE searches all COM ports. If an IRQ line is not specified with the /S option, then the default IRQ line value is IRQ4 for COM1/3 and IRQ3 for COM2/4. In the future IRQ autodetection will be added. Option /V reverses default search order, causing CTMOUSE to look for a serial mouse before checking for the PS/2 device. This can be useful, for example, on notebooks which have a built-in PS/2 pointing device to enable use of a serial mouse, when attached. Using option /Y (see below) may also be required along with /V. Note: option /V enables both serial and PS/2 protocols, so using options /P and /S without arguments along with /V in the command line is meaningless. For serial mice, CTMOUSE searches all COM ports (or at the port specified by option /S) for an attached mouse with Microsoft or Logitech protocol. If no such mouse is found then CTMOUSE installs at the first existing (or specified) COM port in Mouse Systems mode, whether a mouse is there or not. (This is because the Mouse Systems protocol defines no detection sequence). Option /Y in the command line disables Mouse Systems protocol support and prevents driver installation if no mouse with Microsoft or Logitech protocol is found. Note: option /Y forces serial mouse search, but, unlike option /S, doesn't disable PS/2 support. Both PS/2 and plain Microsoft protocols assume a two button mouse but option /3 in the command line can be used to enable the middle button if one is present. WARNING: when the middle button of a plain Microsoft mouse is enabled, pressing left or right button along with the middle button can cause "middle button state triggering" - i.e. when the middle button is pressed the driver thinks it is released and vice-versa. This is a peculiarity of the Microsoft protocol and can't be changed. If button triggering occurs simply press the left or right button along with the middle button once again to clear the problem. CTMOUSE supports 9 fixed resolution levels and auto resolution. Resolution defines how the mouse movements are added to the cursor position. Small mouse movements at any resolution produce the same cursor movement; this allows precise cursor positioning on the screen. Larger mouse movements are multiplied by resolution level to produce the cursor movement; this allows rapid cursor movement across the screen without big efforts. With auto resolution the faster the mouse is moved, the greater multiplier is used, giving the cursor a nonlinear acceleration. Option /R, whose syntax is described in the help screen, allows the preferred resolution level to be specified for each direction. If installing from low memory, CTMOUSE attempts to move itself into upper memory (UMB) if there is a suitable free UMB block and option /W is not used. With option /W any external utility can be used to install CTMOUSE at a specific location. Subsequent CTMOUSE runs simply reset the resident part to the new command line options, unless the mouse is not found or option /B or /N is used. When installing, CTMOUSE ignores and hides any present mouse services unless option /B is used. Option /U in command line can be used to unload the resident part of CTMOUSE unless driver interrupts have been intercepted by another program. After successful unloading, CTMOUSE restores mouse services that were present at installation time. Option /B in the command line cancels CTMOUSE execution if any (including CTMOUSE itself) mouse services are already present. With option /B CTMOUSE will not install itself above loaded mouse drivers and will not reset the resident part to new command line options. In contrast, option /N forces the loading of a new TSR even if CTMOUSE is already loaded - without this option CTMOUSE will only reset the loaded resident part. In cases where mouse services are provided by any other driver or are not present at all, CTMOUSE loads a new TSR even without option /N - see table below: options no services other driver CTMOUSE loaded ------- ----------- ------------ -------------- /B load CTMOUSE do nothing do nothing load CTMOUSE load CTMOUSE update resident part /N load CTMOUSE load CTMOUSE load new CTMOUSE Option /N is useful for batch files, which load CTMOUSE before some actions and unload it after. For each event CTMOUSE returns an appropriate exit code which can be used in "if errorlevel" statements in batch files: 0 PS/2, Microsoft or Logitech mouse found and CTMOUSE installed; Unload successful; /? option used. 1 CTMOUSE installed in Mouse Systems mode; Unload failed because CTMOUSE was not loaded. 2 Resident part switched to PS/2, Microsoft or Logitech mode; Unload failed because driver interrupts were intercepted. 3 Resident part switched to Mouse Systems mode. 4 Mouse services already present (returned for option /B only). 5 Mouse not found; Invalid option used. Together with options /B and /N, this enables creation of complex and intelligent batch files. For example, the following batch file can be used to run a program that requires mouse services to be present: ctmouse/n/y>nul if errorlevel 5 echo Mouse not found! if errorlevel 5 goto end %1 %2 %3 %4 %5 %6 %7 %8 %9 ctmouse/u>nul :end In the previous example, CTMOUSE is loaded before and unloaded afterwards regardless of whether or not mouse services are already present (e.g., another mouse driver was loaded). This may not be suitable if every free byte of memory is important or if CTMOUSE does not support a mouse that is currently in use. In the following example, CTMOUSE will be loaded and unloaded only if no mouse services are present: if "%1"=="@" goto driverloaded ctmouse/b/y>nul if errorlevel 5 echo Mouse not found! if errorlevel 5 goto end if errorlevel 2 goto run call %0 @ %1 %2 %3 %4 %5 %6 %7 %8 %9 ctmouse/u>nul goto end :driverloaded shift :run %1 %2 %3 %4 %5 %6 %7 %8 %9 :end Option /B can also be used to manually specify a mouse search sequence. In the following example, CTMOUSE is installed by the first command that finds a mouse and the following commands won't affect the resident part: ctmouse/b/s4/y>nul ctmouse/b/p/y>nul ctmouse/b/s2/y>nul Use the /? command line option to obtain a help screen with all option descriptions. The CuteMouse package also includes a utility to detect COM ports (COMTEST) and a serial protocol analyzer (PROTOCOL). PROTOCOL shows how mice work and what they send to the computer for each action. PROTOCOL can even decipher information sent by PnP mice. All output goes through DOS functions and can be redirected to a file for subsequent analysis or sending to someone else. Compiling: ---------- To assemble the English version of the driver use TASM (or any compatible assembler) and any linker that can produce a COM file from OBJ files: copy ctm-en.msg ctmouse.msg tasm /m @asmlib.cfg ctmouse.asm tlink /t /x ctmouse.obj,ctmouse.exe com2exe -s512 ctmouse.exe ctmouse.exe To assemble the serial protocol analyzer: tasm /m @..\asmlib.cfg protocol.asm tlink /t /x protocol.obj To compile or delete temporary files, the MAKE utility also can be used (see makefile). Known problems: --------------- Symptom: if the mouse is moved when Works 2.0 for DOS or Word 5.5 for DOS are redrawing a screen in graphics mode then some parts of screen are corrupted. Cause: these programs don't hide the mouse cursor while drawing on the screen and/or don't use the EGA RIL API when changing video adapter registers. Solution: correct the code of these programs; don't move the mouse while the screen is being redrawn; future versions of CTMOUSE will probably read the VGA adapter registers directly. Symptom: under Windows 3.1 after a mouse reset (INT 33/0000), the graphics mouse cursor is shifted by one pixel right/down. Cause: Windows traps INT 33 calls and for the reset function additionally calls the text and graphics cursor define functions with [-1,-1] hot spot. Solution: use 'PUSHF/CALL FAR' sequence instead of 'INT' instruction to call INT 33 handler; there probably are some Windows APIs, which can be used in CTMOUSE to interact with Windows directly. Symptom: sometimes, under Windows 3.1, the graphics cursor has a black box shape. This may also happen after switching between windows. Cause: probably due to a Windows bug when Windows incorrectly redefines the cursor after video mode changes or switching between windows. Solution: restart the graphics application or switch back and forth between windows again; there probably are some Windows APIs, which can be used in CTMOUSE to interact with Windows directly. Symptom: unlike Microsoft Mouse driver 8.2, the mouse doesn't work in a windowed DOS box of Windows 3.1 with CTMOUSE installed. Cause: the Microsoft Mouse driver most probably uses an unpublished API to interact with Windows. Solution: currently unknown. Symptom: CTMOUSE fails to detect PS/2 mice under Windows 9x/ME. Cause: Windows seems unwilling to let a DOS application have access to the PS/2 device services. Solution: currently unknown. Credits: -------- (Some names are mentioned in HISTORY). Ralf Brown : author of Interrupt List (a great collection of system specific information). Joergen Ibsen / Jibz : author of aPACK (an excellent executable packing program); advice about managing executables. Arkady V.Belousov : bugfixes, optimizations and features. Alain Mouette : many ideas and message files. Jason Burgon : bugfixes, features, advice about interrupts handling consistency. Matthias Paul : many ideas and advice about interfacing with OS. Robert Riebisch : mode 13h bugfix. Fernando Papa Budzyn: automatic loadhigh capability. Martin : optimizations. Paul Schubert: much faster PS/2 code. All who helped with ideas and code. Contacts: --------- mailto:nagyd@users.sourceforge.net http://cutemouse.sourceforge.net