China DOS Union

Detailed Explanation of the Hardware Setup File SYSTEM.INI for Chinese Windows 95

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Composition of the SYSTEM.INI File
The SYSTEM.INI file contains several sections, each consisting of a set of related settings. The format of sections and settings is as follows:

Keyword Name=Value
The main section names and descriptions that make up the SYSTEM.INI file are as follows:
Segment Name Description
List of driver programs and Windows modules
Includes information about the keyboard
Device name that can be modified through Windows Setup
Information required by Windows in 386Enhanced mode
Information used by non-Windows applications
Media Control InterFace (MCI) driver program list
List of installable driver program names or aliases
List of installable 32-bit driver program names or aliases
Cache configuration of the TTF font library of Win 95
Note: Modifying the main settings in SYSTEM.INI is very dangerous and may cause fatal errors in Windows tasks.

Detailed Explanation of SYSTEM.INI File Configuration
1.
The records some basic settings established when Chinese Win 95 starts. The most important one is the shell program (SHELL program) of Win 95. Usually, this SHELL program is the Win 95 Explorer, but it can also be other programs, such as Program Manager, File Manager, etc. In this section, except for CacheFileHandles, other settings are necessary. If you modify or delete one of the settings, Win 95 may not work properly. For settings without a fixed default value, Win 95 will set them according to the system configuration.
(1) Comm.drv=File Name (Default: COMM.DRV)
This item is used to specify the name of the serial communication driver used by the system.
If you upgrade from a Win 3.x environment using a third-party communication driver, Win 95 will not replace the original driver with Microsoft's COMM.DRV. At this time, you need to add the setting item Commdrv30=ON in the section of SYSTEM.INI. If you want to replace the third-party communication driver with Microsoft's COMM.DRV, and the communication driver loads its own virtual communication driver while being installed, you also need to make some modifications in the section of SYSTEM.INI.
(2) Fixedfon.fon=File Name (Default: Determined according to the display driver)
This setting is used to indicate the fonts of Windows 2.x and 3.x that can run in Chinese Win 95. If there are old versions of applications in the system that use a mono-spaced font, you can update the font by modifying this line. To make Notepad use an appropriate space font on a VGA system, you should set Fixedfon.fon to VGASYS.FON. The specified in this setting is a raster font file with the extension.FON, and these font files must be placed in the SYSTEM directory.
(3) Fonts.fon=File Name (Default: Determined according to the display driver)
This setting is used to indicate the font used by Win 95 in menus and dialog boxes. Win 95 provides different versions of fonts for different resolutions and stores these fonts in the SYSTEM directory. The system fonts provided by Chinese Win 95 include: Egasys.FON, VGASYS.FON, and 8514SYS.FON, etc. You can specify any available system font in the "Fonts.fon=" line.
Another way to modify the Win 95 menu font is to modify the description of the section in the WIN.INI file.
Note: If an unavailable font is specified in this setting item, Win 95 will not run, and at this time, you must restart the computer.
(4) OemFonts.fon=File Name (Default: Determined according to the display driver)
This setting defines the clipboard browser program of Win 95, which can be used to display the font of OEM TEXT format text. The installation program SETUP of Win 95 installs the corresponding fonts for different resolutions and initializes the "OemFonts.Fon=" line accordingly. Chinese Win 95 supports three OEM-type fonts: EGAOEM.FON, VGAOEM.FON, and 8514FON.FON. The font specified in this setting item must be a mono-spaced font using the DOS character setting, not other Windows system fonts (except symbols) using the ANSI character setting. When you copy a text block to the clipboard, Win 95 generally stores it in OEM TEXT format. At this time, if you transfer the text to a non-Windows application, the clipboard will provide data to it in OEM TEXT format. For example, after appropriate character value conversion, you can display bold characters in a non-Windows application as in a Windows application.
Note: Before setting the font in the "OemFonts.fon=" line, you must first select the "Display" command and OEMTEXT in the clipboard browser. If you modify this line and the specified font is not the OEM font of Win 95, Win 95 will not run, and you can only restart the microcomputer system.
(5) Shell=File Name (Default: Explorer.exe)
This setting is used to specify the default SHELL program for starting or ending the Win 95 task. This setting item is necessary for the system, so you cannot delete this setting item or its parameters. The Explorer is the default SHELL program, but you can also change it to other programs such as Program Manager. For example: Shell=Winfile.exe.
Almost all Windows applications can be specified as the SHELL program, but when the program cannot activate other applications, it will make the Win 95 system a single application environment. Sometimes this feature is very useful. For example, if you only use Excel or Word, you can set Excel or Word as the default SHELL program of Win 95 to save startup time. When selecting a third-party SHELL program, such as Norton Desktop For Windows 95 as the default setting, the "Shell=" line is usually automatically modified.
Note: The "Shell=" line must have parameters, otherwise, Windows will not start.
(6) Sound.drv=File Name (Default: Determined according to the system's sound hardware)
This setting item is used for the sound driver used by the Win 95 system.
(7) ScrnSave.exe=File Name (Default: None)
This item is mainly used to set the screen saver for Win 95. For example:
ScrnSave.exe=D:\PWIN\SSMARQUE.SCR
2.
The contains some settings that affect the performance of non-Windows applications. For example, the operation of MS DOS 7.0 itself, the mouse operation in MS DOS 7.0, and other management work, etc.
(1) CommandEnvSize=Number of bytes (Default: For versions before MS-DOS 3.2, it is set to 0; for other versions, the default value is the value after /E: in the SHELL= command line parameter in the CONFIG.SYS file)
This setting is used to specify the size of the COMMAND.COM environment. When running a non-Windows application in Win 95, if the message "NotEnough Environment Space" is displayed, you need to increase this setting value. For example, to allocate 2KB of environment space, you can enter the following line:
CommandEnvSize=2048
Since Win 95 will start COMMAND.COM when executing a batch file (.BAT), this setting also applies to batch files. The setting value is 0-32768 or 160-32768. 0 means cancel this setting. If the value is too small, you can increase it to 160. If the value is too large, you can reduce it to 32768. If the set value is smaller than the current actual environment size, the setting value will be invalid, and the effect is the same as setting it to 0. When running a DOS application under Win 95, Win 95 will create a virtual machine (DOS VM) and provide a backup of the MS DOS 7.0 environment space for it. This DOS environment space is the same as the one allocated by CONFIG.SYS, and the default is 160 bytes. You can also specify other values. For example: SHELL=C:\DOS\COMMAND.COM /E:1024/P
(2) DisablePositionSave=0/1 (Default: 0)
If this setting is invalid, when exiting the application, the position and font used by the non-Windows application will be saved in the DOSAPP.INI file. If this setting item is set, the position and font used by the non-Windows application that are not saved in the DOSAPP.INI file in advance will not be saved.
(3) FontChangeEnable=0/1 (Default: 0)
Win 95 video grabber (for the display driver of Win 95). Contains internal support for changing the font when running a non-Windows application in a window. If the used Windows 3.x version grabber is not updated and does not include the function of changing the font, and you want to use this function, you can enable this setting. However, when enabling this setting, characters may be lost on the screen, and the size and position of the (mouse) cursor may change slightly. If your mouse does not work normally, you can restore the FontChangeEnable parameter to 0.
(4) LocalTSR=List of TSR applications (Default: DOSEDIT, CED)
This setting specifies which memory-resident programs (TSR) can work normally when copied to each instance of the virtual machine. When starting Win 95, the system checks all currently running TSR programs. If the TSR is in the Local TSRs list, Win 95 copies the TSR to each instance of the running virtual machine. However, many TSR programs cannot work normally even if they are added to this list. Therefore, before adding it to the list, you must ensure that the TSR program is fully compatible with Win 95 and can be copied to the virtual machine.
(5) MouseInDosBox=0/1 (Default: If a.COM or.SYS mouse driver is loaded and supports using the mouse in non-Windows applications, it is set to 1; otherwise, the default value is 0)
When running a non-Windows application in a window, it indicates whether the mouse is supported. If the Win 95 grabber is used, mouse support is automatically provided when executing a non-Windows application under Win 95. If the Windows 3.x version grabber is used and mouse support is needed, this setting can be enabled.
(6) NetAsynchSwitching=0 or -1 (Default: 0, unless the running application can use the task switcher API through NetBIOS support)
This setting indicates whether the application can switch out from the application after making an asynchronous network BIOS call in the standard mode. If this setting is canceled, switching is not possible. Switching out from some applications may cause the system to crash. Once Win 95 detects an asynchronous NetBIOS call, even if it is no longer called, switching out from the application is not possible. This setting can only be enabled when it is ensured that the used application is inactive and will not receive network messages.
(7) Screen Line=Number (Default: 25)
This setting item will specify the number of lines displayed on the screen when running a non-Windows application. The application can reset this value if it specifies a different screen mode. This setting parameter can be changed to 43 or 50, but the application may not receive this setting value.
3.
The section contains information specific to running Chinese Win 95, including some information for virtual memory paging. These parameter settings are mainly around how to make full use of processors above 386 and 486.
(1) AIIVMSExclusive=OFF/ON (Default: OFF)
Enabling this setting will force all applications to run in an exclusive full-screen mode and override all opposite settings in the program information file (PIF) of the application. When enabling this setting, if running incompatible network and memory-resident software with Win 95, the Chinese Windows dialogue period can be extended. Microsoft recommends using this setting when running network or TSR software that is not fully compatible with Win 95. If this setting item is ON, the function of the Alt+Enter key combination of Win 95 is blocked. When running a DOS application in Win 95, this key combination can switch the program between full-screen display mode and window display mode.
(2) AIIEMSLocked=OFF/ON (Default: OFF)
When this setting is ON, Win 95 no longer moves extended memory to the disk and cancels any PIF settings that prevent extended memory from being locked. In most cases, converting extended memory to the disk will not cause any problems.
If a disk buffer program is used in the Win 95 system or a DOS device driver that requires extended memory is used, set this setting to ON.
(3) AltKeyDelay=Seconds (Default: 0.005)
This setting defines the longest time Win 95 waits to process another keyboard interrupt after processing an Alt interrupt. If some applications in the system cannot correctly handle the Alt key, it is best to extend this setting parameter value.
(4) AltPasteDelay=Seconds (Default: 0.025)
This setting item defines the longest time Win 95 waits for character input after pressing the Alt key. Some applications require a higher setting value than the default value.
(5) AutoRestoreScreen=OFF/ON (Default: ON)
This setting is used to determine whether the screen of a non-Windows application running in Win 95 is restored by Chinese Win 95 or by the program itself when switching to it. It only works for applications running in VGA display mode. In this case, both the program itself and Win 95 can restore the program screen.
(6) CGA40WOA.FON=File Name (Default: CGA40WOA.FON - American usage)
Win 95 will use the font specified by this setting to display non-Windows applications that require a 40-column, less than or equal to 25-line display mode.
(7) CGA80WOA.FON=File Name (Default: CGA80WOA.FON - American usage)
Win 95 will use the font specified by this setting to display non-Windows applications that require an 80-column, less than or equal to 25-line display mode.
(8) COM1AutoAssign=Number (Default: 2)
(9) COM2AutoAssign=Number (Default: 2)
(10) COM3AutoAssign=Number (Default: 2)
(11) COM4AutoAssign=Number (Default: 2)
This setting item specifies the processing method of Win 95 when two non-Windows applications or one non-Windows application and another Windows application simultaneously request to use a specific COM interface. If the parameter is -1, Win 95 will issue a warning and ask the user which application to connect; if the parameter is 0, Win 95 will not intervene in the conflict, that is, any application can use this interface at any time; if the parameter is greater than 0, Win 95 will assign the interface to the first application that applies for it. When the application finishes using it, Win 95 will wait for several seconds (that is, the set value here), and then assign this interface to the second application. The set value here should be less than 1000.
Generally, this parameter is best not set to 0, but some non-Windows printing programs require setting the printer parameters on the serial port to 0.
Note: Win 95 often arbitrates device requests from Windows applications. The AutoAssign number is only used for requests between virtual machines, that is, at least one of the requests comes from a non-Windows application.
(12) COM1Base=Address (Default: Interface value in the BIOS data area)
(13) COM2Base=Address (Default: Interface value in the BIOS data area)
(14) COM3Base=Address (Default: 3E8H)
(15) COM4Base=Address (Default: Interface value in the BIOS data area)
These settings can define the base (start) address for each serial interface in Win 95.
(16) COM1Buffer=Number (Default: 128)
(17) COM2Buffer=Number (Default: 128)
(18) COM3Buffer=Number (Default: 128)
(19) COM4Buffer=Number (Default: 128)
These setting items define the number of characters in the buffer that Win 95 allocates to each interface. If there are more characters, the buffer needs to be increased. Microsoft recommends setting the "COMxProtocol=" line to XOFF before modifying this parameter.
If the system uses a 16550 Universal Asynchronous Receiver Transmitter (UART) and a non-Windows communication program under Win 95, set the communication buffer to 0 to make better use of the UART buffer.
(20) COM1FIFO=OFF/ON (Default: ON)
(21) COM2FIFO=OFF/ON (Default: ON)
(22) COM3FIFO=OFF/ON (Default: ON)
(23) COM4FIFO=OFF/ON (Default: ON)
These setting items are used to determine whether the FIFO buffer of the 16550 UART is available.
If a new version of the 16550 UART that does not support the FIFO buffer well is used in the system or a problem is encountered, the FIFO buffer of the corresponding interface should be turned off, that is, the above parameters are all changed to OFF.
(24) COM1IRQ=Number (Default: 4)
(25) COM2IRQ=Number (Default: 4)
(26) COM3IRQ=Number (Default: 4)
(27) COM4IRQ=Number (Default: 4)
These settings are used to indicate the interrupt request used by each serial interface in Win 95.
(28) COM1Protocol=XOFF|(Space) (Default: Space)
(29) COM2Protocol=XOFF|(Space) (Default: Space)
(30) COM3Protocol=XOFF|(Space) (Default: Space)
(31) COM4Protocol=XOFF|(Space) (Default: Space)
These settings are used to determine whether Windows running with Win 95 aborts the response character that emulates an XOFF character in the virtual machine. If the above parameters are set to other values than XOFF or all the setting lines are default, Win 95 will ignore the XOFF character; if one of the lines is set to XOFF, Chinese Windows will stop sending characters after receiving an XOFF character and resume sending when it receives the second character (no matter what character it is). When a binary file is transferred through a certain serial port, you should turn off its corresponding Protocol setting; if character loss occurs during high baud rate transfer, set the corresponding Protocol value to XOFF. If character loss still occurs at this time, you should increase the setting of the corresponding "COMxBuffer=" line.
(32) COMBoostTime=Number of milliseconds (Default: 2)
This setting specifies the time allowed for the virtual machine to process a COM interrupt. If the input characters do not appear on the screen when running a communication application, try increasing this setting value.
(33) COMIRQSharing=OFF/ON (Default: ON for MCA and EISA, OFF for ISA)
This setting is used to determine whether the serial port can share the interrupt request line. If COM1 and COM3 or COM2 and COM4 use the same IRQ in the system, this line should be set to ON.
(34) Commdrv30=OFF/ON (Default: OFF)
If this setting is enabled, the virtual COM driver (VCD) will use a copy of its interrupt handler for the serial communication driver, which will improve the performance of the COM port. If a serial communication driver of Windows 3.2 or later version is used, set it to OFF.
(35) DMABufferIn1MB=OFF/ON (Default: OFF)
This setting item is used to determine whether the direct memory access (DMA) buffer needs to be loaded into the first megabyte of memory to be compatible with 8-bit bus control cards.
(36) DMABufferSize=Number of bytes (KB) (Default: 16)
This setting item is used to define the size of the memory used by the DMA buffer. Some systems' DMA buffers need more than 16KB of memory. For example, Central Point Software suggests setting a 64KB DMA buffer. If the NetBIOS network is installed before starting Win 95, Win 95 will use a larger memory setting parameter and need to explain this parameter in "NetDMASize=".
If the system uses EMM386.EXE with the "D=" parameter, Win 95 will ignore this parameter and use the setting parameter of DMABufferSize.
(37) DualDisplay=OFF/ON (Default: Determined according to the display adapter)
Generally, when Win 95 is running, unless a second display is detected, the memory between B000:0000 and B7FF:000F is used by the system. If a VGA color display is used and you want EMM386.EXE to treat this address space as an upper memory block (UMB), select this setting and add the I= option to the DEVICE=EMM386.EXE command line in CONFIG.SYS, that is: DEVICE=EMM386.EXE I=B000-B7FF
If this setting does not work, the EGA system can use this address range, but the VGA system cannot use it because the VGA display device needs to support the monochrome mode, and the monochrome mode needs to use this address space.
(38) EGA40WOA.FON=File Name (Default: EGA40WOA.FON - American usage)
Win 95 will use the S font specified by this setting item to display non-Windows applications that require a 40-column, greater than or equal to 25-line display mode.
(39) EGA80WOA.FON=File Name (Default: EGA80WOA.FON - American usage)
Win 95 uses the font specified by this setting item to display non-Windows applications that require an 80-column, greater than or equal to 25-line display mode.
(40) EMMExclude=Segment-Range (Default: None)
This setting item specifies a memory range that Win 95 does not scan the unused address space in. The side effect is to turn off the search codes for RAM and ROM in this range. This range (two segment values separated by a hyphen) must be between A000 and EFFF. This scanning may interfere with some adapters that use the same memory range. The start value is rounded down and the end value is rounded up to a multiple of 16K. For example, set EMMExclude=C800-CFFF to prevent Chinese Windows from scanning the addresses between C800:0000 and CFFF:000F. To specify multiple ranges, you can add multiple lines of EMMExclude.
(41) EMMInclude=Segment-Range (Default: None)
This setting item specifies a memory range that WIN 95 treats as unused address space regardless of the content in this range. If the specified address range overlaps with EMMExclude, EMMInclude takes precedence over EMMExclude. This range (two values separated by a hyphen) must be between A000 and EFFF. The start value is rounded down and the end value is rounded up to a multiple of 16K. For example, set EMMExclude=C800-CFFF to ensure that Win 95 can use the addresses between C800:0000 and CFFF:000F. To specify multiple ranges, you can add multiple lines of EMMInclude.
(42) EMMPageFrame=Segment Range (Default: None)
When Win 95 cannot find a suitable page frame, this setting specifies the starting segment of a 64K page frame. Allows the EMM page frame in a certain area to contain some unused RAM or ROM. For example, set EMMPageFrame=C400 to make the page frame start from C400:0000.
(43) EMMSize=Number of bytes (KB) (Default: 64KB)
This setting item specifies the total amount of memory that can be mapped as extended memory. The default value maps the maximum possible amount of system memory as extended memory. If the running application occupies all available extended memory, specify the value of this setting. At this time, no new virtual machine can be created; if this value is zero, no extended memory will be allocated, but the EMM driver is loaded; if you want to disable EMM and prevent the EMM driver from loading, use the NoEMMDriver setting.
(44) FileSysChange=OFF/ON (Default: OFF)
This setting item indicates whether the file manager automatically receives messages at any time when a non-Windows application creates, renames, or deletes a file. If this setting is invalid, the virtual machine can run in exclusive mode even if the file is modified. Enabling this setting will significantly reduce the system performance.

　　(45)Global=device name (default: none)
　　This setting is used to define a global MS DOS device, that is, only one copy of the device state is retained in memory, and all virtual machines can use it. By default, all DOS devices except CON are global. However, some device drivers can define themselves as local. Therefore, when some devices are defined as local and cause system interruptions, the Global= setting should be changed to eliminate this failure.
　　Note: The device name in this setting item must be a device name listed in CONFIG.SYS, otherwise the setting item will be invalid.
　　(46)InDOSPolling=OFF/ON (default: OFF)
　　Enabling this setting can avoid Win 95 running other applications when the memory-resident software has set the InDOS flag. If the memory-resident software needs to operate outside INT 21 in the critical section, this setting needs to be enabled, but it will slightly reduce the system performance.
　　(47)INT28Critical=OFF/ON (default: ON)
　　This setting item specifies whether a critical section is required to handle the INT 28H interrupt used by the memory-resident software. Some networks perform internal task switching during the INT 28H interrupt, and these interrupts may lock some network software. If such software is not used, this setting can be disabled to improve the task switching performance of Win 95.
　　(48)IRQ9Global=OFF/ON (default: OFF)
　　When this setting item is ON, the IRQ9 mask will be converted to global. If the floppy disk data cannot be read under Win 95, set this line to ON.
　　(49)KeyBoostTime=seconds (default: 0.001)
　　This setting item is used to indicate the time when an application gets high priority when receiving keyboard input. When running a background program and the foreground application responds slowly to keyboard input, this setting value can be increased to improve this situation.
　　(50)KeyBufferDelay=seconds (default: 0.2)
　　This setting item is used to indicate the waiting time of Win 95 before displaying keyboard input when the keyboard buffer is full. When some non-Windows applications cannot correctly display the text in the clipboard, this setting can be increased to improve this situation.
　　(51)KeyIdleDelay=seconds (default: 0.5)
　　This setting item is used to define the time that Win 95 ignores the idle call after simulating a keyboard input to the virtual machine. Reducing this setting value can speed up the keyboard input, but it may also reduce the running speed of some applications.
　　(52)KeyPasteCRSkipCount=numeric value (default: 10)
　　(53)KeyPasteSkipCount=numeric value (default: 2)
　　These two lines of settings can control the delay loop that WIN 95 uses to slow down the input speed of the virtual machine. Especially after sending a "carriage return" (KeyPasteCRSkipCount) or other characters (KeyPasteSkipCount), before sending the second character, these two settings can determine how many INT 16H calls should return "empty". If character loss occurs when transferring to a non-Windows application, this setting value can be increased to improve this situation.
　　(54)KeyPasteDelay=seconds (default: 0.003)
　　This setting item is used to define the shortest time that Win 95 waits between sending two characters. If you want to change the character loss that occurs during sending, this setting value should be increased.
　　(55)KeyPasteTimeOut=seconds (default: 0.003)
　　This setting item is used to define the time provided for an application to perform the BIOS keyboard read call before Win 95 switches from the fast sending (INT 16H) mechanism to the slow sending (INT 9H) mechanism.
　　(56)KeyPasteTimeout=seconds (default: 0.003)
　　This setting item is used to define the time provided for an application to perform the BIOS keyboard read call before Win 95 switches from the fast sending (INT 16H) mechanism to the slow sending (INT 9H) mechanism.
　　(57)KybdReboot=OFF/ON (default: ON)
　　This setting item is used to determine whether Win 95 uses a keyboard controller command to restart the computer when responding to the Ctrl+Alt+Del command. If a system interruption occurs when starting the computer using this keyboard command, this setting should be changed to OFF.
　　(58)LocalLoadHigh=OFF/ON (default: OFF)
　　This setting item is used to determine whether Win 95 reserves some idle UMBs for local use by the virtual machine. Unless there are special virtual machines that need to use UMBs at the same time, do not set this line to ON.
　　(59)LocalReboot=OFF/ON (default: ON)
　　This setting item specifies whether the Ctrl+Alt+Del key can be pressed to exit the application after an unrecoverable error occurs under Win 95. Enabling this setting, the application will not exit Win 95 when exiting; otherwise, the entire system will be restarted.
　　(60)MaxCOMPort=numeric value (default: 4)
　　This setting item specifies the maximum number of COM ports that can be supported under Win 95. If there are more than 4 COM ports installed on the computer, this value can be changed.
　　(61)MaxPagingFileSize=number of bytes (KB) (default: available disk space)
　　This line is one of the two lines of settings in SYSTEM.INI used to control the maximum length of the temporary swap file, which is related to the available space of the hard disk. Windows generally does not allow the establishment of a temporary swap file with a capacity greater than half of the available hard disk space. If the disk space is insufficient, this setting value should be reduced, that is, add "MaxPagingFileSize=" line in the section and set it to the required value. Another related setting is MiniUserDiskSpace.
　　(62)MaxPhyspage=hexadecimal number of pages (default: set according to the total amount of physical memory tested when Windows starts).
　　This setting item is used to indicate the maximum number of physical memory pages available for Win 95. If the hardware device cannot recognize all the physical memory in the system (such as ISA, DMA network cards cannot use memory below 16MB), a specific value will be set in the MaxPhysPage= line.
　　(63)MCADMA=OFF/ON (default: ON for MCA computers, OFF for other computers)
　　This setting item is used to determine whether Win 95 uses microchannel extension for DMA. If you are using a microchannel computer without DMA extension, set this line to OFF.
　　(64)MessageBackColor=VGA color attribute (default: 1)
　　(65)MessageTextColor=VGA color attribute (default: F)
　　This setting is used to specify the background and foreground colors when Win 95 displays full-screen text information. The system default background is blue and the characters are white. The parameter value range of the background color is 0-7, and the parameter value range of the foreground color is 0-F (hexadecimal).
　　(66)MiniTimeSlice=milliseconds (default: 20)
　　This setting item specifies the shortest time that the DOS virtual machine runs. Reducing this setting value can make multi-tasking run more smoothly, but it will reduce the overall performance. Because in this case, Win 95 needs to spend more time on task switching.
　　Note: Since Windows applications are all run in virtual machines, this setting will not affect the processor time allocation between Win 95 applications.
　　(67)MiniUserDiskSpace=number of bytes (B) (default: 2000)
　　This setting item specifies the minimum free hard disk space that Win 95 reserves when creating a temporary swap file, which is invalid for the permanent swap file. If the temporary swap file needs more storage space, this setting value can be appropriately reduced.
　　(68)MouseSoftInit=OFF/ON (default: ON)
　　When running non-Windows applications in the window, if the mouse causes damage to the cursor and screen information, set this setting item to OFF.
　　(69)NetAsynchFallback=OFF/ON (default: OFF)
　　(70)NetAsynchTimeout=seconds (default: 5.0)
　　Enabling "NetAsynchFallback=" to set Win 95 will try to save a failed NetBIOS request. The "NetAsynchTimeout=" setting specifies the timeout period for NetBIOS. When an application sends an asynchronous NetBIOS request, Win 95 will try to allocate space in the global network buffer to receive data. If the space in the global buffer is insufficient, Chinese Win 95 usually cannot complete the NetBIOS request. After enabling this setting, Chinese Win 95 will try to allocate a buffer in the local memory to save this request, and prohibit other virtual machines from running until data is received or the timeout period ends.
　　(71)NetDMASize=number of bytes (KB) (default: 32 on microchannel machines (IBM PS/2 or its compatibles); 0 on non-microchannel machines (IBM PC/AT or its compatibles))
　　When the network is installed and the size of the DMA buffer used by the NetBIOS transmission software is specified, the buffer capacity takes the larger value of this value and the DMABufferSize value.
　　(72)NetHeapSize=number of bytes (KB) (default: 12)
　　When transmitting data on the network, specify the size of the data transfer buffer allocated in the conventional memory. All specified values are rounded up to multiples of 4K.
　　(73)Network=(default: the setting program specifies an appropriate value according to the system configuration)
　　Specify the network type used in Win 95.
　　(74)NoEMMDriver=OFF/ON (default: OFF)
　　When this setting is ON, Win 95 will not install the extended memory driver provided for running non-Windows applications. If non-Windows applications do not need extended memory, set this line to ON, so that Win 95 can allocate the transfer buffer in the upper memory block and release more conventional memory for non-Windows applications.
　　(75)PageBuffers=numeric value (default: 4)
　　This setting item defines the number of 4KB buffers that Win 95 uses to store asynchronous read and write pages when using virtual memory. Increasing this setting value can improve the performance of Win 95.
　　(76)Paging=OFF/ON (default: ON)
　　When the setting item is OFF, Win95 cannot use virtual memory. If the user needs to use the disk space occupied by the temporary or fixed swap file, set this setting item to OFF.
　　(77)PagingFile=path and file name (default: C:\Windows\WIN386.SWP)
　　This setting item is used to indicate the location and file name of the temporary swap file. Since this line includes the full path name of the file, it can overcome any conflicting settings in PagingDrvie.
　　(78)PagingDrive=drive name (default: the drive where the SYSTEM.INI file is located)
　　This setting specifies the drive used by the temporary swap file in Win 95. If the system uses a fixed swap file, this setting is invalid.
　　(79)PermSwapDOSDrive=drive name (default: none)
　　This setting item specifies the drive used by the fixed swap file of Win 95. If the system uses a temporary swap file, this setting is invalid.
　　(80)PermSwapSize=number of bytes (KB) (default: none)
　　This setting item is used to specify the size of the fixed swap file.
　　(81)PerVMFiles=numeric value (default: 10)
　　This setting item specifies the number of local file handles provided for each virtual machine.
　　Note: If the DOS SHARE.EXE utility is loaded in the system, this setting is invalid. In addition, the total number of file handles that all virtual machines can open and the number of handles specified in FILES in CONFIG.SYS cannot exceed 255.
　　(82)PSPIncrement=numeric value (default: 2)
　　This setting item specifies the additional memory quantity (incremented by 16 bytes) that Win 95 should reserve for each successive virtual machine when the UniqueDOSPSP setting is enabled. The setting value that maximizes the performance of the machine is determined by the memory configuration and the application running, and the effective value is 2-64. For detailed content, refer to the UniqueDOSPSP setting.
　　(83)ReflectDSPInt2A=off/on (default: OFF)
　　This setting item indicates whether Win 95 receives or bounces the DOS INT 2A signal. OFF means that Win 95 will receive this signal to improve the execution efficiency of Windows. If the running memory-resident software depends on detecting the INT 2A message, enable this setting.
　　(84)ReservedHighArea=segment address range (default: none)
　　This setting item specifies the high memory range that Win 95 is prohibited from checking. The upper and lower bound values of this area are in hexadecimal, and the two values are separated by a "-" character. When needed, Win 95 will use the area outside this range, so the size of this range should be a multiple of 4KB. This setting is similar to EMMExclude, except that the specified memory area is smaller.
　　(85)ReservePageFrame=OFF/ON (default: ON)
　　When the UMBs space is insufficient, this setting item can determine whether Win 95 gives priority to the extended memory page frame or the transfer buffer. When ON, the EMS page frame is placed in the upper memory (with 64KB of continuous free space), and the transfer buffer is placed in the conventional memory. However, this will reduce the conventional memory available to the virtual machine. If the DOS application does not use extended memory, it is best to set this setting item to OFF.
　　(86)SyncTime=OFF/ON (default: ON)
　　Enabling this setting, Win 95 periodically synchronizes the system time with the CMOS clock. When this setting is invalid, Win 95 usually maintains the correct time unless the TrapTimerPorts setting is also invalid and an application that causes the system time to be faster or slower than the actual time is run. This setting is related to the TrapTimerPorts setting.
　　(87)TimerCriticalSection=milliseconds (default: 0)
　　This setting item instructs Win 95 to enter the critical section of all timer interrupt codes and specify the timeout period (milliseconds). Specifying a positive number means that only one virtual machine can receive the timer interrupt at a time. Canceling this setting may cause some networks and other global memory-resident software to fail to run, but using this setting will reduce system performance and make the system seem to be down for a short time.
　　(88)TokenRingSearch=OFF/ON (default: ON)
　　This setting item is used to determine whether Win 95 needs to search for the Token-Ring network adapter at the AT level. If the system does not use the Token-Ring network and this query interferes with other devices, set this device to OFF.
　　(89)TrapTimerPorts=0/1 (default: 0)
　　This setting item specifies whether Win 95 should intercept the read and write operations of the application on the system timer port. When this setting is invalid, Win 95 will not intercept these operations, which makes applications that frequently read and write the timer run faster, but this may affect Win 95's ability to maintain an accurate system time. However, Win 95 can usually detect when an application changes the timer interrupt interval and adjust the time in time when this setting is invalid. If the system time seems to be faster or slower, you can enable this setting or enable the "SyncTime=" setting. The latter will make Win 95 check the time regularly and make necessary adjustments.
　　(90)UniqueDOSPSP=OFF/ON (default: if the network is based on Microsoft network or LAN Manager, set to ON; for other networks, set to OFF)
　　Enabling this setting, Win 95 starts each application from a unique address (PSP). When Win 95 creates a new virtual machine to run a new application, Win 95 will reserve a certain amount of memory (i bytes) in the application. For example, if the first application is loaded at address M, the second application is loaded at address M+i, and the third is M+2i, and so on. The amount of memory (i) is determined by the PSPIncrement setting. These settings ensure that applications of different virtual machines start from different addresses. Some networks use the loading address of the application to identify different processes using the network. If this setting fails on such a network, because the network will treat these two programs as the same application. Enabling this setting will slightly reduce the available memory of non-Windows applications.
　　(91)UsableHighArea=segment address range (default: none)
　　This setting item defines a high memory area where Win 95 can search for free UMBs, but needs to skip the overlapping area defined by the "EMMExclude=" line. This line is used in combination with EMMExclude to find the specific location where a UMBs conflict occurs.
　　If needed, Win 95 will use memory space that is an integer multiple of 4KB. When the set area is large, EMMExclude should be used. If this set area overlaps with an area excluded by the "X=" parameter of EMM386, Win 95 will ignore this set range.
　　(92)UseROMFont=OFF/ON (default: ON)
　　This setting item is used to determine whether Win 95 uses the soft font in the video ROM when displaying text in full-screen non-Windows applications (including the information displayed when moving away from a non-Windows application). If there are random points or shapes on the screen, set this setting to OFF. Microsoft recommends setting this to OFF when 386MAX or BLUEMAX with QUALITA is selected in the VGASWAP option.
　　(93)VGAMonoText=OFF/ON (default: ON)
　　If the application does not use the VGA adapter monochrome mode, set this setting to OFF, so that Win 95 can access the additional upper memory block: B000-B7FF. In systems that do not use VGA monitors, this switch is invalid.
　　(94)VirtnalHDIrq=OFF/ON (default: ON for AT compatibles; OFF for other computers)
　　Enabling this setting, Win 95 directly ends the interrupt from the hard disk controller, thereby bypassing the ROM routine that handles these interrupts. When this setting is invalid, the interrupt is handled by the ROM routine, which will reduce system performance.
　　(95)WindowsKBRequired=number of bytes (KB) (default: 256)
　　This setting item is used to define the free conventional memory space that must be available when Win 95 starts. If you encounter trouble when starting Win 95, this setting value can be reduced.
　　(96)WindowsMemSize=-1 or number of bytes (KB) (default: -1)
　　This setting item specifies the size of the conventional memory used by Win 95. By default (-1), Win 95 can use the conventional memory freely.
　　(97)WinExeclusive=0/1 (default: 0)
　　This setting prohibits non-Windows applications from running in the background. When this line is set to 1, when a Win 95 application is running in the foreground, all non-Windows applications will be terminated.
　　(98)WinTimeSlice=foreground value, background value (default: 100, 50)
　　When the Win 95 virtual machine runs in the foreground or background, this setting item is used to determine which virtual machine (Windows virtual machine or non-Windows virtual machine) the priority is given to. In Win 95, all Windows applications run in one virtual machine, and non-Windows applications run in their own virtual machines respectively.
　　Compared with MiniTimeSlice, WinTimeSlice refers to a relative value, while the latter refers to using ms as the measurement unit. For example, set WinTimeSlice to 100 and 50, and when there are no DOS programs running, the Win 95 virtual machine will get 100% of the processor time.
　　Suppose two non-Windows applications are running, and WiTimeSlice is 100 and 50. When the Windows virtual machine is running in the foreground, it gets nearly half of the processor time, as shown in the following formula:
　　OWS virtual machine foreground priority value / (first DOS virtual machine background priority value + second DOS virtual machine background priority value) = 100 / (50 + 50)
　　When the first non-Windows application is running in the foreground, all Windows applications will get a total of one-third of the processor time, as shown in the following formula:
　　OWS virtual machine background priority value / (first DOS virtual machine foreground priority value + second DOS virtual machine foreground priority value) = 100 / (100 + 50)
　　If the priority of the DOS program is set to 100 and 50, that is, the parameter value is not reset in the DEFAULT.PIF file or other application's PIF file, the user can reduce the impact of the background non-Windows application on the foreground Windows application by providing the foreground parameter value in the "WinTimeSlice=" line. This value can be 1-10000. Similarly, if you are not satisfied with the performance of the foreground non-Windows application, you can reduce the background priority of the "WinTimeSlice=" line.
　　4.
　　The section defines the relevant configuration parameters of the Win 95 MCI device.
　　5.
　　The section is for special configuration of Win 95 drivers.
　　6.
　　The section is the relevant special configuration of Win 95's keyboard.
　　7.
　　The section is used by the Win 95 setup program to read relevant system configuration information (displayed on the system configuration screen).
　　8.
　　The section mainly determines the 32-bit drivers of WIN 95.
　　9.
　　The section defines the TTf font CACHE capacity of Win95.
　　Note: The content of sections 4 to 9 generally should not be modified.
　　10.
　　The section is mainly for the relevant parameters set for the energy-saving driver of Win 95. If your computer is of an energy-saving type, it is不妨 configured it in Win 95, or add an energy-saving driver in this section.