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1993-04-30
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************************* New Info ***************************
ACAD 386 R12c2 UPDATE
The Phar Lap DOS|Extender and SVADI.EXP files mentioned below and
included in the OS2PCH.ZIP file are NOT needed for AutoCAD 386
Release 12c2. These are only needed for earlier versions of
AutoCAD 386 Release 12. The IBM Service Pack will still be needed
regardless of AutoCAD Release 12 version for customer-installed
IBM OS/2 2.0 versions.
PRE-LOADED IBM OS/2
The IBM Service Pack mentioned below does not work with
pre-loaded OS/2 machines. Customers using machines which come
with pre-loaded IBM OS/2 2.00.1 need to first find out which CSD
level of OS/2 they have and then proceed based on their
findings. Bring up OS/2 in full-screen mode and type "syslevel".
This will list the current CSD level. If it is XR02005, the
customer should contact IBM at 1-800-342-6672 to obtain an update
of their OS/2 instead of following the instructions below
regarding the IBM Service Pack. If it is XR02010 no updates are
needed to IBM OS/2 and the following information regarding the
IBM Service Pack should be disregarded.
IBM OS/2 2.1 (BETA)
No update to the OS/2 software is needed. If you have ACAD 386
Release 12c2, no update to AutoCAD 386 is needed. If you have an
earlier release of AutoCAD Release 12, follow the instructions
below on updating the dos|extender version and using the included
svadi display driver.
******************Product Support April 30, 1993*****************
Updated Phar Lap Dos Extender for
AutoCAD 386 R12
A new Phar Lap DOS Extender, version 4.1-ACAD2, when accompanied
with the appropriate DPMI patches from IBM, allows AutoCAD
Release 12 386 to run in an OS/2 2.0 Full Screen Dos Box.
by Autodesk Product Support
November 2, 1992
DOS Extender 4.1-ACAD2 is an update to version 4.1-ACAD which
AutoCAD 386 currently uses. The DOS Extender is an integral part
of AutoCAD 386. This document will describe how to update the DOS
Extender in place. Here are some of the benefits of the updated
DOS Extender:
DOS Extender 4.1-ACAD2 Benefits
====================================
* Ability to run AutoCAD 386, R12 in a full screen OS/2 dos
box.
NOTE
====
With Dos Extender 4.1-ACAD2, AutoCAD 386 R12 should run from a
dos prompt, within Microsoft Windows 3.1 as a full screen Dos Box
Application and with OS/2 2.0(and DPMI Patches) as a full screen
Dos Box Application.
This update need only be done if you are interested in running
AutoCAD 386 R12 in an OS/2 2.0 Dos Box. The environment for
running AutoCAD 386 in an OS/2 Dos box is very similar to running
within a Dos Box under Windows 3.1. Please refer to the section
"Running AutoCAD 386 under Windows" in the Release 12
Installation and Performance Guide.
In addition to updating the dos extender within AutoCAD R12, it
is also necessary to update the display driver "rcpsvadi.exp."
This is more commonly known as the "SVADI" driver. A new version
of this driver is enclosed on the update disk as well.
Dos Extender 4.1-ACAD2 - A Word of Caution
================================================
Due to inconsistencies between AutoCAD R12 386 and OS/2 2.0,
AutoCAD R12 and R12c1 will not run in a DOS window under OS/2
out of the box. Autodesk and IBM collaborated to correct these
inconsistencies by developing software patches for both R12 and
OS/2. The patches are now complete, but they have not been
extensively tested. In the interest of providing these patches
as soon as possible, Autodesk has decided to release its patches
in Beta form. The patches have not completed all testing that is
normally conducted on released software so USE THEM AT YOUR OWN
RISK. You need to obtain the IBM code from IBM.
To obtain the IBM patches, you will need to get the OS/2 2.0
ServicePack directly from IBM. For more information about
this ServicePack, call IBM HelpWare at 1-800-772-2227.
How to update your copy of AutoCAD 386 R12 to use DOS Extender
4.1-ACAD2
=================================================================
A program called NEWDX.EXE has been supplied on the enclosed DOS
Extender update disk. NEWDX will remove DOS Extender 4.1-ACAD
from AutoCAD 386 and replace it with version 4.1-ACAD2.
NEWDX will work with AutoCAD R12 C0 and AutoCAD R12 C1. If you
are using a digitizer, we recommend that you upgrade to AutoCAD
R12 C1 for improved digitizer performance.
This procedure should be done on the installed copy of AutoCAD
386, and NOT on the original floppies. The operational steps are
as follows:
1. Change directories to your AutoCAD 386 executable
directory.
cd \acad
2. Back up your copy of ACAD.EXE, i.e. copy ACAD.EXE to
ACADSAV.EXE.
copy acad.exe acadsav.exe.
3. Copy the Dos Extender update program into the executable
directory, i.e. copy A:newdx.*
copy A:newdx.*
4. Execute the program NEWDX.EXE by typing,
newdx acad.exe
5. NEWDX preserves any DOS Extender switch settings that you
may have had in the earlier version of the DOS Extender.
6. If for any reason you encounter problems with DOS Extender
version 4.1-ACAD2, simply copy back the saved executable into
ACAD.EXE.
copy acadsav.exe acad.exe
7. Update the "rcpsvadi.exp" driver.
cd \acadr12\drv
copy rcpsvadi.exp rcpsvadi.sav
copy A:rcpsvadi.exp
The updated driver contains a workaround for an OS/2 bug.
It will work fine on all environments.
OS/2 2.0 Kernel and DPMI Patches
================================
In order to run AutoCAD 386 R12 in an OS/2 dos box, you will need
an OS/2 kernel patch and new DPMI drivers. These files are
available from IBM in the OS/2 2.0 ServicePack. Please install
the ServicePack patches before trying to run AutoCAD R12 on an
OS/2 2.0 system.
Running AutoCAD 386 R12 in an OS/2 Dos Box
==========================================
In order to get optimum performance of AutoCAD 386 R12 under OS/2
make the following changes to your OS/2 Dos Full Screen Session
Settings:
Change DOS_FILES to 50
Change DPMI_MEMORY_LIMIT to 40 (40MB)
Change HW_TIMER to on
Settings you may want to change:(Not tested here)
IDLE_SENSITIVITY -- change to 100 if using serial devices
DOS_HIGH -- why not.
COM_HOLD to on
Video_8514A_XGA_IOTRAP -- for 8514 people
COM_DIRECT_ACCESS
AutoCAD 386 will only take memory from the DPMI memory pool.
The settings for EMS and XMS have no affect on AutoCAD 386.
General OS/2 System Requirements
================================
OS/2 runs AutoCAD 386 much better with 16MB than 8MB. The switch
time between applications is much better. Even more memory may
be required if you wish to run multiple sessions of AutoCAD.
Known Problems
==============
We did all of our testing on the VGA graphics subsystem. When we
tried to make AutoCAD 386 use XGA support inside the dos box,
erratic behavior occurred. We recommend using the "SVADI"
display driver choice for AutoCAD and choosing VGA mode for
AutoCAD 386. IBM is aware of the problems with XGA support.
Just as when running AutoCAD 386 under Windows, we recommend
running AutoCAD at 600x480x16 or 800x600x16 display resolution.
Higher resolutions or more colors may cause problems unless the
display driver has an intelligent screen grabber.
Some beta users have noticed that digitizer performance within
the OS/2 dos box is not as good as under straight dos.