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- Conventional Memory Tracking
- ============================
-
- CONVMEM.VXD tracks the amount of memory allocated by virtual device
- drivers (VxDs) in conventional memory. Normally, all this memory is
- reported against the VMM32 device rather than being broken down.
-
- To install CONVMEM.VXD, copy the file into your Windows\System directory,
- and add the line
-
- device=convmem.vxd
-
- to the [386Enh] section of the system.ini file. Restart Windows 95,
- and then you will find a file called CONVMEM.TXT in your Windows directory.
-
- To uninstall CONVMEM.VXD, delete the file CONVMEM.VXD and remove the
- above line from your system.ini file.
-
- Interpreting the output
- =======================
-
- The CONVMEM.TXT file consists of a table with the following headers:
-
- Address - The address at which the memory was allocated (hexadecimal)
- Size - The size of the memory block (hexadecimal)
- Align - The requested memory alignment
- I - The letter "I" if the block is instanced, else blank
- Caller - The virtual device driver that allocated the memory
-
- A block of memory will be marked as "-- unused --" if it is not assigned
- to any virtual device. This is normally either due to padding required
- to satisfy a device's alignment request, or unused bytes at the end of
- a page of memory.
-
- Sample Output
- =============
-
- VMM32 conventional memory usage
-
- Address Size Align I Caller
- -------- -------- ----- - ------
- 0001ddd0 00000006 Byte VMOUSE(02) + 000001A2
- 0001ddd6 0000000a -- unused --
- 0001dde0 00000050 Para V86MMGR(04) + 000001ED
- 0001de30 00000022 Para I VTD(02) + 0000022B
- 0001de52 0000000e -- unused --
- 0001de60 00000020 Para VCDFSD(03) + 0000005D
- 0001de80 00000034 Byte VDD(04) + 000003E5
- 0001deb4 0000001f Byte VMOUSE(02) + 0000042C
- 0001ded3 00000007 Byte VNETBIOS(04) + 0000037B
- 0001deda 00000006 -- unused --
- 0001dee0 00000008 Para NWLINK(03) + 00000435
- 0001dee8 00000002 Byte DOSMGR(04) + 0000032E
- 0001deea 0000000e Byte VSHARE(02) + 000002DB
- 0001def8 00000008 -- unused --
- 0001df00 00000037 Para IFSMGR(02) + 00000726
- 0001df37 00000008 Byte APIX(01) + 00000281
- 0001df3f 00000001 -- unused --
- 0001df40 00000041 Para I NWREDIR(04) + 00000356
- 0001df81 0000003e Byte I SHELL(05) + 00000551
- 0001dfbf 00000041 -- unused --
- 000d1400 000001e4 Byte I MSMINI(02) + 000000A2
- 000d15e4 00000174 Word I DOSMGR(04) + 00000BF0
- 000d1758 00000254 Dword I DOSMGR(04) + 00001710
- 000d19ac 00000004 -- unused --
- 000d19b0 000003c0 Para VSHARE(02) + 00000220
- 000d1d70 00000290 -- unused --
- 000d2000 00001000 Page V86MMGR(04) + 00000CEC
- 000d3000 00000133 Para I IFSMGR(02) + 000006FC
- 000d3133 0000000d -- unused --
- 000d3140 000002f7 Para IFSMGR(02) + 0000136C
- 000d3437 00000009 -- unused --
- 000d3440 000003d4 Para NWREDIR(04) + 00000309
- 000d3814 00000200 Word I VMM(05) + 00007974
- 000d3a14 0000007f Byte DOSMGR(04) + 00000473
- 000d3a93 0000056d -- unused --
-
- Total unused = 0000087f
-
- Line-by-line Analysis
- =====================
-
- The following is a line-by-line analysis of the sample output.
- The "Address" and (to a lesser extent) "Size" values may vary
- from machine to machine, but the "Caller" will normally remain
- consistent. Of course, not all lines may appear on all machines.
- (For example, if your computer does not have a network installed,
- then you won't find any of the network-related lines.)
-
-
- 0001ddd0 00000006 Byte VMOUSE(02) + 000001A2
-
- These bytes are used by the mouse driver for compatibility
- with MS-DOS applications which use the Int 33h interface in
- unusual ways.
-
- - One byte for the SLICK editor.
- - One byte for most DOS-extended programs.
- - Four bytes for old BASIC interpreters.
-
- 0001dde0 00000050 Para V86MMGR(04) + 000001ED
-
- These bytes are used as part of memory manager emulation.
-
- - 74 bytes for EMS emulation.
- - 6 bytes for XMS emulation.
-
- 0001de30 00000022 Para I VTD(02) + 0000022B
-
- These bytes are used by the Virtual Timer Device as part of its
- timer emulation for MS-DOS programs.
-
- 0001de60 00000020 Para VCDFSD(03) + 0000005D
-
- These bytes are used by CD-ROM File System driver as part of
- its MSCDEX emulation.
-
- 0001de80 00000034 Byte VDD(04) + 000003E5
-
- These bytes are used by the display driver for compatibility
- with MS-DOS applications which use the Int 10h interface in
- unusual ways, particularly those which use the Video
- Electronics Standards Assocation (VESA) interface.
-
- 0001deb4 0000001f Byte VMOUSE(02) + 0000042C
-
- These bytes are used by the mouse driver for compatibility
- with MS-DOS applications which use the Int 10h interface in
- unusual ways.
-
- 0001ded3 00000007 Byte VNETBIOS(04) + 0000037B
-
- These bytes are used by the network driver for compatibility
- with 16-bit network drivers and MS-DOS applications which use
- network interfaces in unusual ways.
-
- - 2 bytes for compatibility with 16-bit network drivers
- - 5 bytes for unusual users of Int 5Ch
-
- 0001dee0 00000008 Para NWLINK(03) + 00000435
-
- These bytes are used by the network driver for compatibility
- with the IPX MS-DOS network interface and MS-DOS applications
- which use network interfaces in unusual ways.
-
- - 1 byte for compatibility with some applications
- - 7 bytes for compatibility with IPX
-
- 0001dee8 00000002 Byte DOSMGR(04) + 0000032E
-
- These bytes are used for compatibility with certain MS-DOS
- applications which use MS-DOS Int 24h in unusual ways.
-
- - 2 bytes for compatibility with Wing Commander 3
-
- 0001deea 0000000e Byte VSHARE(02) + 000002DB
-
- These bytes are used by the VSHARE device to provide file
- sharing support to MS-DOS applications.
-
- 0001df00 00000037 Para IFSMGR(02) + 00000726
-
- These bytes are used by the Installable File System Manager
- device to provide device driver services for drives which
- exist only in protected mode.
-
- 0001df37 00000008 Byte APIX(01) + 00000281
-
- These bytes are used to provide emulation of the Common Access
- Method (CAM) interface for Small Computer Systems Interface (SCSI)
- devices.
-
- 0001df40 00000041 Para I NWREDIR(04) + 00000356
-
- These bytes are used to provide MS-DOS emulation for the Novell
- NetWare-Compatible network redirector.
-
- 0001df81 0000003e Byte I SHELL(05) + 00000551
-
- These bytes are used by the Windows 95 MS-DOS shell to detect
- when an application has entered or exited a graphics mode.
-
- 000d1400 000001e4 Byte I MSMINI(02) + 000000A2
-
- These bytes are used by the mouse driver as part of MOUSE.COM
- emulation.
-
- 000d15e4 00000174 Word I DOSMGR(04) + 00000BF0
-
- These bytes are used by the MS-DOS Manager virtual device in
- order to start a program in a new MS-DOS session.
-
- 000d1758 00000254 Dword I DOSMGR(04) + 00001710
-
- These bytes are used by the MS-DOS Manager virtual device in
- order to increase the value of FILES= in config.sys.
-
- 000d19b0 000003c0 Para VSHARE(02) + 00000220
-
- These bytes are used by the VSHARE device to provide file
- sharing support to MS-DOS applications which use FCBs.
-
- 000d2000 00001000 Page V86MMGR(04) + 00000CEC
-
- Memory allocated by V86MMGR(04) + 00000CEC is used as part
- of service translation. The size of this memory is typically
- 4096 bytes (1000h), but other VxDs may request that V86MMGR allocate
- more memory for service translation.
-
- 000d3000 00000133 Para I IFSMGR(02) + 000006FC
-
- These bytes are used by the Installable File System Manager
- device in order to support long file name operations.
-
- 000d3140 000002f7 Para IFSMGR(02) + 0000136C
-
- These bytes are used by the Installable File System Manager
- device to provide device driver information for drives which
- exist only in protected mode.
-
- 000d3440 000003d4 Para NWREDIR(04) + 00000309
-
- These bytes are used by the network driver for compatibility
- with the Novell NetWare MS-DOS network interface.
-
- 000d3814 00000200 Word I VMM(05) + 00007974
-
- These bytes are used when the Virtual Machine Manager needs
- to execute 16-bit code temporarily on behalf of another
- virtual device driver.
-
- 000d3a14 0000007f Byte DOSMGR(04) + 00000473
-
- These bytes are used by the MS-DOS Manager virtual device in
- order to increase the number of files that can be opened by
- Windows.
-