Windows 3.1 SYSTEM.INI [standard] Section

• Microsoft Windows operating system versions 3.1, 3.11

SUMMARY

The information contained in this article is taken from the SYSINI.WRI file contained in the Microsoft Windows Resource Kit for the Windows operating system version 3.1. The SYSINI.WRI file may be viewed with Windows Write.

The [standard] section of the SYSTEM.INI file contains settings that are specific to running Windows in standard mode.

MORE INFORMATION

The [standard] section can contain the following settings: ____________________________________________________________

FasterModeSwitch=<0-or-1>

Default: 0 Purpose: Enabling this setting causes Windows running in

          standard mode to use a faster method of switching
          from protected to real mode on many 80286-based
          computers. When this setting is enabled, Windows
          responds quicker to hardware interrupts, allowing
          better throughput for interrupt-intensive
          applications, such as communications applications.
          In addition, you should enable this setting if you
          are using a Zenith Z-248 system and are losing
          characters while typing, or if you are using an
          Olivetti M-250-E and lose control of the mouse.

       Some early IBM-AT and compatible computers do not
       have the BIOS support necessary to use this setting.
       Enabling this setting on these computers may cause
       them to hang when starting Windows.

Int28Filter=<number>

Default: 10 Purpose: Specifies the interval of INT28h interrupts,

          generated when the system is idle, that are made
          visible (or reflected) to software that is loaded
          before Windows. Windows will reflect every nth
          interrupt, where n is the value of this setting.
          For example, a value of 1 reflects every INT28h
          interrupt, a value of 2 reflects every second
          INT28h interrupt, a value of 3, every third INT28h
          interrupt, and so on. Increasing this value might
          improve Windows' performance, but may interfere
          with some memory-resident software such as a
          network. Set this value to 0 to prevent any INT28h
          interrupts from being reflected. Setting this
          value too low (from 1 to 9)  might interfere with
          communications applications.

MouseSyncTime=<milliseconds>

Default: 500 Purpose: Specifies the number of milliseconds that can

          elapse between mouse data bytes before Windows
          running in standard mode assumes that a mouse data
          packet is complete. This setting only affects
          Windows running standard mode on computers with an
          IBM PS/2 mouse interface.

NetHeapSize=<kilobytes>

Default: 8 Purpose: Specifies the size (in kilobytes) of the data-

          transfer buffer that standard-mode Windows
          allocates in conventional memory for transferring
          data over a network. If an application is not
          running correctly, your network may require a
          larger buffer than the default. Increasing this
          value will decrease the amount of memory available
          to applications. If no network software is
          running, this setting will be ignored and no
          memory will be allocated.

PadCodeSegments=<0-or-1>

Default: 0 Purpose: Setting this value to 1 causes Windows kernel to

          pad code segments with 16 bytes. This will prevent
          the last instruction in the segment from being too
          close to the segment limit for 80286 C2 stepping.
          Set this value to 1 if your 80286 system hangs in
          standard mode.

Stacks=<number>

Default: 12 Purpose: Specifies the number of interrupt reflector stacks

          used by the standard mode MS-DOS Extender (DOSX).
          Interrupt reflector stacks are used when the MS-
          DOS Extender needs to map a DOS or BIOS API from
          real mode to protected mode. If you receive a
          "Standard Mode: Stack Overflow" message, try
          increasing the number. You can specify a number
          between 8 and 64.

StackSize=<bytes>

Default: 384 Purpose: Specifies the size of the interrupt reflector

          stacks used by the standard mode MS-DOS Extender.

            should never need to change this setting.)

Reference(s):

Microsoft Windows Resource Kit 3.1 SYSINI.WRI file