README.TXT: General Notes About HardwareLast reviewed: November 22, 1994Article ID: Q76783 |
The information in this article applies to:
SUMMARYThe following information is contained in the Windows with Multimedia Extensions version 1.0 README.TXT file. The Setup program copies this file to the Windows with Multimedia Extensions directory. This information does not apply to later versions of Windows.
GENERAL NOTES ABOUT HARDWARE
More than 16 megabytes (MB) of RAMIf your computer has over 16MB of RAM, you must run the HIMEM.SYS that you received with Windows 3.0, not other XMS drivers.
Using COM Ports for CommunicationsIf you are running a non-Windows application that uses COM ports for communications, you might lose characters or receive protection violations. If so, include the following setting in your SYSTEM.INI file
COMxProtocol=XOFFwhere x is the number for the COM port For information on this switch and instructions on changing SYSTEM.INI settings, see the on-line document, SYSINI2.TXT.
Using Serial Communications Ports SimultaneouslyOn some systems, you might have problems simultaneously using the COM1 and COM3 ports or the COM2 and COM4 ports. If so, make sure the [386enh] section of your SYSTEM.INI file contains the following setting:
COMIrqSharing=trueThis setting allows simultaneous use of the COM1 and COM3 (or COM2 and COM4) ports on some systems. However, many serial communications adapters do not allow these ports to be used simultaneously, regardless of the setting in your SYSTEM.INI file.
Using the COM3 and COM4 Serial Ports in 386 Enhanced ModeSome PC systems with COM3 and COM4 serial communications ports use I/O base port addresses that differ from the default addresses that Windows uses when running in 386 enhanced mode. This difference can cause Windows to deny access to a port that is actually available. To avoid this problem, make sure that all COMxBase= settings in the [386enh] section of the SYSTEM.INI file are set correctly for the serial port adapter(s) you are using. Many adapters use the values COM3Base=3E8h and COM4Base=2E8h instead of the default Windows values. See your hardware documentation for the correct values for your serial port adapter(s). See the SYSINI2.TXT file for additional information about the communications port settings.
Adaptec Controller BoardsIf you are using an Adaptec controller board, you might need to turn off double-buffering in SMARTDrive. You can do this by adding the /B- switch at the end of the SMARTDrive device line in your CONFIG.SYS file. The following is an example of such an entry:
device=c:\windows\smartdrv.sys 1024 512 /B-The All ChargeCard with a 3Com Network If you have problems running the All ChargeCard in standard mode with a 3Com network, remove ALLEMM4.SYS from your CONFIG.SYS file. Alternately, you can keep ALLEMM4.SYS and start Windows in real mode. To start in real mode, type WIN /r at the DOS prompt and press ENTER.
Apricot Computers
* If you are running Windows in 386 enhanced mode on Apricot DOS 3.3, you must install a console device driver such as the ANSI.SYS driver you received with MS-DOS.Adding an entry like the following to your CONFIG.SYS file will suffice:
device=c:\DOS\ANSI.SYSFailing to do so might cause CTRL+BREAK keystrokes to terminate the wrong application.
* If you want to run Windows in 386 enhanced mode, you need to install special drivers. You can obtain these from your Apricot distributor. AST Rampage BoardsYou need to upgrade your AST RAMTYPE.SYS driver if both the following conditions are true:
* You have an IBM PS/2 or micro-channel architecture computer. * Your board is configured for expanded and extended memory.RAMTYPE drivers before version 1.20 will not coexist with other applications that use extended memory. This makes them incompatible with the HIMEM.SYS, which is required by Windows 3.0. The Windows Setup procedure removes RAMTYPE.SYS from your CONFIG.SYS file. This might cause error messages to appear when you start your computer, as other drivers that rely on RAMTYPE cannot load. This also means that no application can use the expanded memory on your system. However, with RAMTYPE.SYS removed, Windows 3.0 runs correctly. If you have a version of RAMTYPE newer than 1.20, or if you upgrade to a newer version, you can include the RAMTYPE command line in your CONFIG.SYS file. If you are installing an upgrade, you can simply copy this entry from CONFIG.OLD made by Setup when you installed Windows.
AT&T 386 computers with Phoenix ROM BIOSIf your AT&T 386 computer has a Phoenix ROM BIOS version 1.10.14 or earlier, you might be unable to run a non-Windows application in a window. (To determine whether your computer uses a Phoenix ROM BIOS and which version, reboot and check the top line on your screen.) To correct the problem, complete the following steps:
CD-ROM ExtensionsIf you are using CD-ROM Extensions, include the following entry in the [386Enh] section of your SYSTEM.INI file:
device=LANMAN10.386You also need to activate the drive by sending it a command before you start Windows. For example, type the following at the DOS prompt and then start Windows:
dir x:where x is the drive letter for the CD ROM drive.
Epson Screen SaversSome Epson computers have screen-saver utilities that clear the screen after a specified period of inactivity. With Windows 3.0, the screen saver might detect that the system is idle when it is not. Windows will function properly even though the screen is blank, but nothing will be displayed until you exit Windows and start up again. See the documentation that you received with your Epson computer for instructions about disabling the screen saver. For information about ScreenSavers included with the Multimedia extensions, see the HyperGuide section entitled Appearances, in the Control Panel Concepts. The Control Panel is part of the Main Group in HyperGuide.
Everex 386/25 and EMM386.SYSIf you are using an Everex 386/25 with EMM386.SYS, include the following parameters in your CONFIG.SYS file:
device=EMM386.SYS C600-C7FF Hitachi Amdek DrivesThese drives do not work reliably with Windows 3.0. To resolve this problem access the drive before you start Windows by typing the following at the DOS prompt
dir x:where x: is the drive letter for the Amdek drive
IBM Expanded MemoryIf you want your 286-based PS/2 computer configured to use expanded memory, you must add the following line to your CONFIG.SYS file:
device=XMA2EMS.SYSWhen you ran Setup to install Windows and chose to let Windows modify your CONFIG.SYS, this line was removed. Check the backup, CONFIG.OLD for the exact entry you must add. See your "IBM DOS Command Reference" for further information on using XMA2EMS.SYS.
Logitech Bus MouseIf you have a Logitech bus mouse on your computer, Setup will identify it as a Microsoft or PS/2 mouse. This is correct. The Logitech bus mouse is compatible with the Microsoft mouse driver. The Logitech serial mouse uses its own driver.
LCD displaysIf you use an LCD display, set it for white text on a black background instead of black on white. When you are using Windows, black on white is hard on LCD displays. See the documentation that came with your display for instructions on changing it.
NCR 925 and EMM386.SYSIf you are using an NCR 925 with EMM386.SYS, include the following parameters in your CONFIG.SYS file:
device=EMM386.SYS E000-EFFF Plus HardcardTo run Windows 3.0 with a Hardcard you must include the following line in your SYSTEM.INI file in the [386Enh] section:
VirtualHDIRQ=offSee the on-line document SYSINI3.TXT for information about the procedure. It is also a good idea to use SMARTDrive with a Hardcard. See Chapter 4, "Optimizing Your System," in Introducing Windows with Multimedia for more information on using SMARTDrive.
SCSI Hard Disk Drive using DMAIf your computer has an SCSI hard disk that uses DMA, you must include the following entry in the [386Enh] section of your SYSTEM.INI file:
VirtualHDIRQ=FALSEIn addition, you must have SMARTDrive installed and you must NOT disable double-buffering by using the /B- option.
Columbia Data Products SCSITo use the Columbia Data Products SCSI hard disk controller with Windows 3.0 in 386 enhanced mode, you must update the Columbia Data Products SCSI software to version 3.35 or higher. Tandy 2500 XL with ROM DOS The Tandy 2500 XL can be configured to use ROM DOS. If you want to use this feature, after you run Windows Setup, you must run the Tandy setup program (SETUPXL). Modify your configuration so that your AUTOEXEC.BAT and CONFIG.SYS files are read from drive C.
Toshiba Plasma DisplayToshiba VGA-compatible plasma displays have built-in protection against overheating. This protection causes the screen to dim whenever more than half of the screen is brightly lit. If this makes your display difficult to use with Windows, change your display colors by using the VCHAD program provided with your Toshiba hardware. To change the plasma display colors you'll need to copy special files to your Windows directory, modify the Windows desktop colors, and create a special batch file for starting Windows. The procedures are outlined in the following steps.
Copying the Files
Modifying the Windows Desktop Colors
Creating the Batch File
Wyse ComputersIf you are using a Wyse computer to run Windows, you might need to modify the device=HIMEM.SYS line in your CONFIG.SYS file to read:
device=[path]HIMEM.SYS /M:WYSE Using VGA Display Adapters
* If you use a VGA-compatible display adapter and have difficulties running Windows in 386 enhanced mode, you might need to include the following line in the [386Enh] section of your SYSTEM.INI file: EMMEXCLUDE=C400-C7FF This is because some VGA compatible cards use additional memory to enhance the performance of their cards. Manufacturers of these cards include Video 7 and Paradise. Display adapter boards with the main chip(s) manufactured by Tseng Labs, Chips and Technologies, Paradise, and Headland Technologies also function this way. When Windows is running in 386 enhanced mode and is configured for VGA, Windows detects most of these cards and automatically excludes the additional memory. However, you must add the line to SYSTEM.INI yourself if: - You have both an 8514 and a VGA display adapter and configured Windows for the 8514. - You have an enhanced VGA adapter that Windows does not recognize. See the SYSINI2.TXT on-line document for the procedure. * If you have both a VGA display adapter (primary) and an 8514 (secondary), you might have problems switching between full-screen non-Windows applications when running Windows in 386 enhanced mode. If an application does not display properly, the digital to analog converter (DAC) on your VGA card needs to be updated. Contact the manufacturer for an upgrade. In the meantime, if your application has a command to refresh the screen, you might be able to temporarily correct the display so you can use the application. For example, if your display is a color display, you can type the following at the DOS Prompt and press ENTER: MODE CO80 See your application's documentation for information about commands that refresh the screen. Using Self-Configuring Display AdaptersSome display adapters can change their configurations to match what an application tries to do. For example, if an application tries to use a VGA display, the adapter could switch from an EGA configuration to VGA. This type of display adapter makes use of non-maskable interrupts (NMIs) to reconfigure itself as you work. To use this type of display adapter with Windows running in 386 enhanced mode, you must disable the NMI (self-configuring) option. First configure the display adapter for the type of monitor you have, then disable the NMI option. See your hardware documentation for further instructions.
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