SYSINI.WRI from Windows for Workgroups 3.11 (Part 3 of 3)

 Last reviewed: November 22, 1994
Article ID: Q109500
The information in this article applies to:
  • Microsoft Windows for Workgroups version 3.11

SUMMARY

The following information was taken from the Microsoft Windows for Workgroups version 3.11 SYSINI.WRI.

MORE INFORMATION

[386Enh] Section Settings

The [386Enh] section contains information used for virtual-memory page swapping; virtual-memory network drivers; and 32-bit disk access, file access, and SCSI port drivers.

The [386Enh] section can contain the following settings: ____________________________________________________________ 32BitDiskAccess=<on-or-off> 

Default:     Off
Purpose:     If on, this setting attempts to use 32-bit disk
access for all disk drives. If your disk drive controllers cannot support 32-bit disk access, this setting may still show as on. ____________________________________________________________ AllVMsExclusive=<boolean> 

Default:     False
Purpose:     If enabled, this setting forces all applications to
run in exclusive full-screen mode, overriding all contrary settings in the applications' program information files (PIFs). Enabling this setting might prolong the length of the Windows session when you are running network and memory-resident software that is incompatible with Windows for Workgroups. ____________________________________________________________ COMBoostTime=<milliseconds> 

Default:     2
Purpose:     Specifies the amount of time (in milliseconds) to
allow a virtual machine to process a COM interrupt. If, while running a communications application, you lose keyboard characters on the screen, you can try increasing this value. ____________________________________________________________ COMMdrv30=<boolean> 

Default:     False
Purpose:     If enabled, the Virtual COM Driver (VCD) uses its own
copy of the interrupt handler for the serial communications driver. This improves performance of your COM ports. Enable this setting if you are using a Windows version 3.0 serial communications driver. Disable this setting if you are using the standard Windows version 3.1 serial communications driver. ____________________________________________________________ COM1FIFO=<0-or-1> COM2FIFO=<0-or-1> COM3FIFO=<0-or-1> COM4FIFO=<0-or-1> 

Default:     True
Purpose:     Specifies whether the FIFO buffer of a COM port's
16550 Universal Asynchronous Receiver Transmitter (UART) should be enabled (True) or disabled (False). If a serial port does not have a 16550 UART, this setting is ignored.

____________________________________________________________ COMIrqSharing=<boolean> 

Default:     True for Micro Channel Architecture and EISA
machines; False for all other machines. 
Purpose:     Specifies whether COM interrupt lines are sharable
between multiple serial ports or with other devices. Enable this setting if your machine uses the same interrupt for COM3 or COM4 as it does for COM1 or COM2. ____________________________________________________________ DOSPromptExitInstruc=<boolean> 

Default:     Yes
Purpose:     If this setting is enabled, when you start MS-DOS
Prompt, a message appears with instructions on how to exit and switch away from MS-DOS Prompt. Disable this setting if you do not want to see the message. ____________________________________________________________ DualDisplay=<boolean> 

Default:     See "Purpose" below.
Purpose:     Typically, the memory between B000:0000 and B7FF:000F
is used by the general system unless a secondary display is detected. Enable this setting if you are using a VGA-based color display and want EMM386.EXE to include this address space as an upper memory block (UMB). In addition to enabling this setting, you must include the i= option in the device=EMM386.EXE command line in your CONFIG.SYS file as follows: 

          device=EMM386.EXE  i=B000-B7FF
If this setting is disabled, the address range is available on EGA systems, but not on VGA systems, because the VGA display device supports monochrome modes, which use this address space. ____________________________________________________________ EMMExclude=<paragraph-range> 

Default:     None
Purpose:     Specifies a range of memory that Windows for
Workgroups will not scan to find unused address space. This has the side effect of turning off the RAM and ROM search code for the range. The range (two paragraph values separated by a hyphen) must be between A000 and EFFF. This scanning can interfere with some adapters that use the same memory area. The starting value is rounded down and the ending value is rounded up to a multiple of 16K. For example, you could set EMMExclude=C800-CFFF to prevent Windows for Workgroups from scanning the addresses C800:0000 through CFFF:000F. You can specify more than one range by including more than one EMMExclude line. ____________________________________________________________ EMMInclude=<paragraph-range> 

Default:     None
Purpose:     Specifies a range of memory that Windows for
Workgroups will treat as unused address space regardless of what may be there. EMMInclude takes precedence over EMMExclude if you specify ranges that overlap. The range (two values separated by a hyphen) must be between A000 and EFFF. The starting value is rounded down and the ending value is rounded up to a multiple of 16K. For example, you could set EMMInclude=C800-CFFF to ensure that Windows for Workgroups can use the addresses C800:0000 through CFFF:000F. You may specify more than one range by including more than one EMMInclude line. ____________________________________________________________ EMMPageFrame=<paragraph> 

Default:     None
Purpose:     Specifies the starting paragraph where the 64K page
frame will begin when Windows for Workgroups cannot find a suitable page frame. Allows an EMM page frame in an area containing some unused RAM or ROM. For example, you could set EMMPageFrame=C400 to start the page frame at C400:0000. ____________________________________________________________ EMMSize=<kilobytes> 

Default:     65536
Purpose:     Specifies the total amount of memory available for
mapping as expanded memory. The default value allocates the maximum possible amount of system memory as expanded memory. Specify a value for this setting if you run an application that allocates all of the available expanded memory. If this is the case, you cannot create new virtual machines. If this value is zero, no expanded memory is allocated, but the EMM driver will load. To disable EMM and prevent the EMM driver from loading, use the NoEMMDriver setting. ____________________________________________________________ EnableSharingPopUps=<boolean> 

Default:     False
Purpose:     Specifies whether a SHARE.EXE sharing-violation
message should appear when a sharing violation occurs while you are using VSHARE. If this setting is enabled, the SHARE.EXE messages will appear. If this setting is disabled, the SHARE.EXE message will not appear and you will not be notified of a sharing violation. Enable this setting if you are using an MS-DOS based application that relies on the sharing-violation message. ____________________________________________________________ FileSysChange=<on-or-off> 

Default:     Off
Purpose:     Indicates whether File Manager automatically updates
file information any time an MS-DOS based application creates, renames, or deletes a file. If this setting is disabled, a virtual machine can run exclusively, even if it modifies files. Enabling this setting can slow system performance significantly. If you are sharing directories and someone else changes the contents of your directories by using an MS-DOS based application, File Manager does not update the directory or file information, even if this setting is enabled. ____________________________________________________________ InDOSPolling=<boolean> 

Default:     No
Purpose:     If enabled, prevents Windows for Workgroups from
running other applications when memory-resident software has the InDOS flag set. Enabling this setting is necessary if the memory-resident software needs to be in a critical section to do operations off an INT21 hook, but will slow system performance slightly. ____________________________________________________________ INT28Critical=<boolean> 

Default:     True
Purpose:     Specifies whether a critical section is needed to
handle INT28h interrupts used by memory-resident software. Some networks do internal task switching on INT28h interrupts. These interrupts might lock up some network software, indicating the need for an INT28h critical section. If you are not using such software, you might improve Windows task switching by disabling this setting. ____________________________________________________________ LocalReboot=<on-or-off> 

Default:     On
Purpose:     Specifies whether you can press CTRL+ALT+DEL to quit
applications that cause an unrecoverable error. If this setting is enabled, you can quit the applications without restarting Windows for Workgroups. If this setting is disabled, pressing CTRL+ALT+DEL will restart your entire system. ____________________________________________________________ MaxBPs=<number> 

Default:     200
Purpose:     Specifies the maximum number of break points (a
method for transferring control to Windows) that can be used by the virtual-memory manager. You may need to increase this value if you are using Microsoft C version 7.0 or a third-party virtual-device driver that requires more break points than the default value. ____________________________________________________________ MaxCOMPort=<number> 

Default:     4
Purpose:     Specifies the maximum number of COM ports supported.
Change this value if you have more than four COM ports installed in your computer. ____________________________________________________________ NetAsynchFallback=<boolean> 

Default:     False
Purpose:     If this setting is enabled, Windows for Workgroups
attempts to save a failing NetBIOS request. When an application issues an asynchronous NetBIOS request, Windows for Workgroups attempts to allocate space in its global network buffer to receive the data. If there is insufficient space in the global buffer, Windows for Workgroups typically fails the NetBIOS request. If this setting is enabled, Windows for Workgroups attempts to save such a request by allocating a buffer in local memory and preventing any other virtual machines from running until the data is received or the time-out period (specified by the NetAsynchTimeout setting) expires. ____________________________________________________________ NetAsynchTimeout=<seconds> 

Default:     5.0
Purpose:     Specifies the time-out period (in seconds) when
Windows for Workgroups will enter a critical section in order to service an asynchronous NetBIOS request. It is used only when the NetAsynchFallback setting is enabled. This value can include a decimal (such as 0.5). ____________________________________________________________ NetCard=<list-of-filenames> 

Default:     None (Setup sets this value to match your configuration.)
Purpose:     Specifies the virtual-device driver(s) for your
network adapter that Windows for Workgroups uses. This driver is loaded when Windows for Workgroups starts, unless the equivalent real-mode driver has already been loaded or Windows for Workgroups is started with the /n switch. ____________________________________________________________ NetCard3=<list-of-filenames> 

Default:     None (Setup sets this value to match your configuration.)
Purpose:     Specifies the virtual-device driver(s) for your
network adapter that Windows for Workgroups uses. Setup uses this parameter only if there is no equivalent real-mode driver for the network adapter card specified. This driver is loaded when Windows for Workgroups starts, unless Windows for Workgroups is started with the /n switch. ____________________________________________________________ NetDMASize=<kilobytes> 

Default:     32 on Micro Channel Architecture machines (IBM PS/2
or compatible); 0 on non-Micro Channel Architecture machines (IBM PC/AT or compatible) 
Purpose:     Specifies the DMA buffer size (in kilobytes) for
NetBIOS transport software if a network has been installed. In this case, the buffer size is the larger of this value or the value of DMABufferSize. ____________________________________________________________ NetHeapSize=<kilobytes> 

Default:     12
Purpose:     Specifies the size (in kilobytes) of the
data-transfer buffers in conventional memory that Windows for Workgroups allocates for transferring data over a network. This setting is needed only if you are using real-mode protocols. It is not required if you are using the NETBEUI.386 protocol. All values are rounded up to the nearest 4K. ____________________________________________________________ NetMisc=<list-of-filenames> 

Default:     None (Setup sets this value to match your configuration.)
Purpose:     Specifies virtual-device drivers needed to run your
network software. These drivers are loaded when Windows for Workgroups starts, unless Windows for Workgroups is started with the /n switch. ____________________________________________________________ Network=<list-of-filenames-or-devicenames> 

Default:     None (Setup sets this value to match your configuration)
Purpose:     Specifies the virtual-network drivers that Windows
for Workgroups uses. ____________________________________________________________ ReflectDosInt2A=<boolean> 

Default:     False
Purpose:     Indicates whether Windows for Workgroups should
consume or reflect DOS INT 2A signals. The default means Windows for Workgroups will consume these signals and therefore run more efficiently. Enable this setting if you are running memory-resident software that relies on detecting INT2A messages. ____________________________________________________________ SecondNet=<filename> 

Default:     None (Setup sets this value to match your configuration.)
Purpose:     Specifies the virtual-network drivers for the
networks you have added support for additional networks installed during Setup. ____________________________________________________________ SyncTime=<boolean> 

Default:     True
Purpose:     If this setting is enabled, Windows for Workgroups
periodically synchronizes its time with the computer's CMOS clock. If this setting is disabled, Windows for Workgroups usually maintains the correct time, unless TrapTimerPorts is disabled and you are running applications that can cause the system time to run faster or slower than the actual time. This setting is related to the TrapTimerPorts setting. ____________________________________________________________ TimerCriticalSection=<milliseconds> 

Default:     0
Purpose:     Instructs Windows for Workgroups to go into a
critical section around all timer interrupt code and specifies a time-out period (in milliseconds). Specifying a positive value causes only one virtual machine at a time to receive timer interrupts. Some networks, protocols, and other global memory-resident software may fail unless this setting is used. However, using this setting slows performance and can make the system seem to stop for short periods of time. ____________________________________________________________ Transport=<list-of-filenames> 

Default:     netbeui.386 (Microsoft NetBEUI)
Purpose:     Specifies the network-protocol virtual-device-driver
file that Windows for Workgroups uses. ____________________________________________________________ TrapTimerPorts=<boolean> 

Default:     True
Purpose:     Specifies whether Windows for Workgroups should trap
read and write operations to the system timer ports that are performed by applications. If this setting is disabled, Windows for Workgroups will not trap these operations, allowing applications that frequently read or write to the timer to run faster. However, this may interfere with the ability of Windows for Workgroups to keep accurate system time. If this setting is disabled, Windows for Workgroups can usually detect when an application has changed the timer interrupt interval and then make any adjustments to the time. If your system's time appears to be running fast or slow, enable this setting. If you do not want to enable this setting, enable the SyncTime setting. This causes Windows for Workgroups to check the time periodically and then make any necessary adjustments. ____________________________________________________________ V86ModeLANAs=<lana number, lana number> 

Default:     None
Purpose:     Specifies the LANA numbers for all the real-mode
protocols and NetBIOS's that Windows for Workgroups recognizes. This setting is for real-mode protocols and NetBIOS's only. This setting should not include any LANA numbers for protected-mode protocols or NetBIOS's. If you start the network before starting Windows for Workgroups, the values for this setting must include the LANA numbers for the real-mode protocols and NetBIOS's that you want to use. If you do not start the network before starting Windows for Workgroups, make sure that the values for this setting do not include LANA numbers for protected-mode protocols or NetBIOS's. ____________________________________________________________ VirtualHDIrq=<on-or-off> 

Default:     On for AT-compatible computers; Off for all other computers
Purpose:     If enabled, Windows for Workgroups can terminate
interrupts from the hard disk controller, bypassing the ROM routine that handles these interrupts. Some hard-disk drives might require this setting to be disabled in order for interrupts to be processed correctly. If this setting is disabled, the ROM routine handles the interrupts, which slows system performance. ____________________________________________________________

KBCategory: kbref kbdisplay
KBSubcategory:
Additional reference words: wfw wfwg 3.11

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Last reviewed: November 22, 1994
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