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R12 DOS under Windows Contract CADD Group - Phone: (604) 591-1140 Email: Looking for CADD expertise? Looking for Web Solutions?

Phone: (604) 591-1140 Toll Free: 1 866 433-2233 AutoCAD * Release 12 (DOS) Under Windows * 3.x By Frank Zander In this article, I discuss how to optimize AutoCAD's performance in the Windows environment. The following specific (Windows) environmental settings will be covered: * Memory (Pharlap DOS Extender) * Video * Program Initiation File (PIF) * ACADR12.BAT * File Manager * Memory Prior to Release 12, AutoCAD's memory manager (developed by Pharlap *) did not conform to Microsoft's * (new) memory specifications. Users who wanted to run AutoCAD Release 11 at optimum speed under Windows had to employ multiple CONFIG.SYS and AUTOEXEC.BAT files and reboot the machine for each application. Another choice was to run Windows in Large Frame EMS Standard Mode, which curtailed the use of any Windows programs requiring 386 Enhanced Mode. Now, with the advent of AutoCAD Release 12, the same CONFIG.SYS and AUTOEXEC.BAT files can be used to run AutoCAD and Windows 3.1 either concurrently or separately. To run AutoCAD Release 12 as a DOS application under Windows 3.1: copy the file PHARLAP.386 (shipped with Release 12) to your Windows directory.

Next, ADD the statement 'device=pharlap. 600dpi Usb Scanner Driver Download Genx. 386' to your Windows 3. Free Download Whatsapp For Nokia E63 Latest Version. 1 SYSTEM.INI file under the existing section called '[386Enh]'. Do not delete any other lines in this section of the SYSTEM.INI file. This statement in the SYSTEM.INI tells Windows to load the PHARLAP memory handler required for running AutoCAD under Windows. Example: [386Enh] device=C: ACAD12 pharlap.386 * Video AutoCAD runs as a DOS application under Windows at VGA (600x480) or SVGA (800x600) resolution. However, maximum resolution for any DOS application under Windows is SVGA, and even at VGA setting, only 16 colours for a DOS application are supported by Windows (yuck!).

You may find that 'task-switching' (ALT + TAB) between applications and AutoCAD leaves residual 'gunk' on the screen. This can be cleaned up in AutoCAD by issuing the command 'RE-INIT' followed by entering the number '32'. However, this method is cumbersome and time-consuming. To remedy this Windows malady add 'local=EGA$' to your Windows 3.1 SYSTEM.INI under the existing section called '[386Enh]'. This will allow you to task-switch between AutoCAD and other applications without the problem of residual video display.

Note: type 'local=EGA$' exactly as shown, including upper and lower case text. DO NOT DELETE 'local=CON'. Example: [386Enh] local=EGA$ * Program Initiation File (PIF) The PIF controls how well your application will perform within the Windows environment. Following is an example of the PIF file I use to launch ACADR12.BAT (the DOS batch file used to setup AutoCAD). * ACADR12.BAT This is the DOS batch file that is used to set up the environment variables to run AutoCAD at the DOS level. My ACADR12.BAT looks like this: @echo off cls SET ACADCFG=e: ACAD12 wincfg rem this statement directs AutoCAD to look for the acad.cfg file rem found in e: acad12 wincfg SET ACAD=e: ACAD12 SUPPORT;e: ACAD12 FONTS;e: ACAD12 ADS rem ACAD= tells AutoCAD where to look for the support files SET ACADDRV=e: ACAD12 DRV rem ACADDRV is the location of the drivers for AutoCAD path=e: acad12;c: dos;c:;d: drawings;d: wp51;c: windows;c: batch;c: pk rem my path for AutoCAD etc.