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                           |    SVGP64      |
                           | Release Notes  |
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 Table of Contents
 -----------------

 AUTODESK ADI 4.2 Driver
 Microstation PC Driver (DOS 386 Protected Mode 4.0)
 Microstation PC 5.0 Driver (DOS 386 Protected Mode 5.0)
 Power Manager Screen Saver
 

==========================================================================
AUTODESK ADI 4.2 Driver
==========================================================================

The Aquila driver is a professional quality PADI  (Protected 
mode   Autodesk   Driver  Interface)  combined  display  and 
rendering device driver to  be  used  with  AutoCAD  Release 
11/12, 3D Studio 1.0/2.0, and AutoShade 2.1.

Features
--------   

Protected mode operation, PADI 4.2 specification

32 bit display list for "no regen" operation

Display list operation with 16 active  viewports,  including 
paperspace viewports

Birds-Eye  and  Edge-Pan  features  for convenient zooms and 
pans

Partial redraws on overlapping viewports

Redraw list for maximum redraw speed with Release 11

Intelligent clean-up (Erase Buffer ) to eliminate "flashing"

Display list memory meter

AutoCAD memory usage statistics

Paging-Alarm -  disables  display  list  usage  when  paging 
become excessive

Reliable dual screen operation

Variable font support- allows fonts up to 16 by 30 in size

International font support

User configurable screen colors

15 and 16 bit "Band-Free " Rendering support

24 and 32 bit Rendering support

Text screen emulation window for Release 12


The  following  display  and/or  rendering  resolutions  are 
supported:



Resolution  Colors  MinimumVideo Memory (MBytes)    Display =D Rendering =R

640 x 480   256     1                               D,R
640 x 480   32K     1                               R
640 x 480   64K     1                               R
640 x 480   16. 7M  2                               R

800 x 600   16      1                               D
800 x 600   256     1                               D,R
800 x 600   64K     1                               R
800 x 600   16. 7M  2                               R


1024 x 768  16      1                               D
1024 x 768  256     1                               D,R
1024 x 768  64K     2                               R

1152 x 864  256     1                               D,R

1280 x 1024 16      1                               D
1280 x 1024 256     2                               D,R


Installation
------------

1.  Install the drivers as described in the manual.

2.  C:\ADAD\DRV  is  the   default  directory.  If  this  is
incorrect, change the path and/or directory and press Enter.

3.  Using the procedure explained in step 1  above,  install 
the VREFRESH utility (SVGP64 Utilities).

4.  Change back to your hard drive (e.g., C:\).

5.  Type and enter VREFRESH to run the Refresh Rate utility.

6.   Use  your  mouse to select the highest refresh rate you 
think your monitor can support for each resolution you might 
use. You may need to install the mouse DOS driver that  came 
with your mouse.

7.  Exit the Refresh Rate utility.

8.  The  installation program installs several environmental 
variables in your autoexec.bat  file.  Additional  variables 
will need to be set for AutoCAD Release 12 (see below). 

9.  Refer to your application's Installation and Performance 
Guide  for  information  about  other environment variables, 
configuring other  non-display  device  drivers  and  system 
configurations   that   are   necessary   to   optimize  the 
performance of your application. 

10. Aquila will detect the Autodesk application that  it  is 
being configured for and will provide correct display driver 
defaults  for  your  applications.  By accepting the default 
parameters, your driver will be configured  correctly.  This 
will work with AutoCAD, AutoShade, or 3D Studio. 

Font Configuration for AutoCAD and AutoShade

1.	This driver will use the 8-bit international font in the 
VGA  BIOS  (8x16)  or,  if  present, an Aquila optional font 
file. The following table  contains  recommended  fonts  for 
AutoCAD.   Select   a   filename  based  on  the  font  size 
recommended for your desired resolution.

filename	width	height	int'l	comments
--------------------------------------------
none        8       16      yes     VGA default
6x9.fnt     6       9       yes     extremely small
8x16.fnt    8       16      yes     more legible than VGA font
9x15.fnt    9       15      no      good for x800 modes
12x20.fnt   12      20      no      good for x1024 modes & small CRTs
12x24.fnt   12      24      no      good for x1024 or x1280 modes
15x25.fnt   15      25      no      best for x1280 modes & small CRTs
16x30.fnt   16      30      no      only useful for x1280 modes

2.  The driver searches  for  the  file  AQUILA.FNT  in  the 
current  directory.  If  not found, it searches for the file 
specified in the DOS environment variable  AQUILA_FONT.  For 
example,

    SET AQUILA_FONT=C:\ACAD\DRV\9X15.FNT

If  the  font  file  is readable, it will be used; otherwise 
Aquila will borrow font data from the VGA BIOS. 

3.	Please note that  font  files  can  only  be  used  with 
AutoCAD  and  AutoShade,  while  3D Studio will only use the 
internal 8x16 VGA font. If Aquila font files are  used  with 
3D Studio, characters such as arrowheads may look strange or 
different. If you are using AutoCAD and 3DStudio on the same 
system, you may want to disable an active Aquila font before 
entering 3DStudio by entering 

	SET AQUILA_FONT=

Logo Configuration for AutoCAD
------------------------------

This  driver  is supplied with an AQUILA.LGO file. This is a 
duplicate of the NEWS3I.LGO file provided for AutoCAD 11 and 
12 and contains a gray S3 logo that serves  as  the  default 
logo  for  the lower right Status Display area. To install a 
special logo, copy the logo file of choice to the AQUILA.LGO 
file in your AQUILA directory.

AutoCAD Release 11 Configuration
--------------------------------

1.	Start AutoCAD by  moving  to  the  \ACAD  directory  and 
typing ACAD.

2.	If  AutoCAD has not yet been configured or your acad.cfg 
has been deleted, skip to 6, below. Otherwise, select option 
#5 "Configure AutoCAD".

3.	Select option #3 "Configure video display".

4.	Select option #1 "ADI P386 v4.0/4.1 display" which  will 
display the Aquila configuration menu.

5.	Choose  1  to  select a display resolution mode. If your 
system is capable of dual monitor  operation,  you  will  be 
asked if you wish to use this option.

6.	Option  1 is the only display driver option that must be 
set before using AutoCAD 11. For options 2  through  9,  you 
may  accept  the  pre-set defaults by choosing 0 to exit the 
Aquila configuration menu, or adjust them as follows  for  a 
customized  display  configuration.  Details regarding these 
custom Aquila display list options  are  provided  later  in 
this document.

7.	Choose  2 to activate the color menu to customize colors 
used for the AutoCAD graphics screen.

8.	Choose 3  to  disable  the  Graphics  Flip-screen.  This 
feature is available for Release 12 only.

9.	Choose  4  to  disable or adjust the Display List memory 
management options.

10.	Choose 5 to disable  or  adjust  the  Erase-buffer  size 
(default   is  enabled  for  "flash-less"  redrawing  during 
editing).

11.	Choose 6 to enable or adjust the sensitivity setting for 
the Page-Alarm (default is off).

12.	Choose  7  to  adjust  or  enable  the  Edge-pan  option 
(default is off).

13.	Choose 8 to disable or change the size of the  Birds-eye 
(default is 25% of the total screen size).

14.	Choose  9  to configure the digitizer or mouse button to 
use for entering commands. The default  is  the  transparent 
Birds-eye command "'AQBIRD", as the recommended double-click 
command.  This  will  allow  you  to  bring up the Birds-eye 
anywhere on the graphics screen while in the  middle  of  an 
AutoCAD command.

15.	Exit the Video Display Configuration menu.

16.	Configure pointer, printer and plotter as needed.

17.	Return   to   the   main   AutoCAD   menu,   saving  the 
configuration results

AutoCAD Release 12 Configuration
---------------------------------

AutoCAD Release 12 uses a much different method of  locating 
device  drivers  than  Release  11.  Release  12 will search 
directories  for  device   files,   ignoring   the   DSPADI= 
environment  variable.  If you are installing or configuring 
Release 12 for the first time, please pay careful  attention 
to the following setup instructions.

1.	Set the environment variable in both the ACADR12.BAT and 
AUTOEXEC.BAT files as follows:

    SET ACADDRV=C:\ACAD\DRV

2.	Set  the  font  variable  as  described above under Font 
Configuration.  Rerun  your  batch  files   if   needed   to 
initialize the environment variables.

3.	Start  AutoCAD  by  moving to the \ACAD directory. Enter 
ACAD if you are configuring for the first time or ACAD -R if 
you are reconfiguring and select item  #3  to  activate  the 
Video Display driver menu.

4.	 From the available display drivers, select "S3 ADI v4.2 
Display and Rendering by ATC Graphics ". 

5.	Choose  1  to display the list of available resolutions. 
Select the AutoCAD S3 Display resolution mode you  want.  If 
your  system  is capable of dual monitor operation, you will 
next be asked if you wish to use this option.

Option 1 is the only option that  must  be  selected  before 
using  AutoCAD  12.  For options 2 through 9, you may accept 
the pre-set defaults  by  choosing  0  to  exit  the  Aquila 
configuration  menu, or adjust them for a customized display 
configuration. Details regarding the special Aquila  display 
list features are provided later in this document.

6.	Choose  2  to  start  the color menu to customize colors 
used for the AutoCAD graphics screen.

7.	Choose 3 to enable or disable the "Flip-screen"  feature 
(default is on for Release 12). Flip-screen is automatically 
disabled if you selected dual monitor operation.

8.	Choose  4  to  disable or adjust the Display List memory 
management options.

9.	Choose 5 to disable the Erase-buffer  size  (default  is 
enabled for "flash-less" redrawing during editing).

10.	Choose 6 to enable or adjust the sensitivity setting for 
the Page-Alarm (default is off).

11.	Choose  7  to  enable  or  adjust  the Edge-Pan feature. 
(Default is off.)

12.	Choose 8 to disable or change the size of the  Birds-Eye 
(default is 25% of the total screen size).

13.	Choose  9  to configure the digitizer or mouse button to 
use for double-click entering of your selected command.  The 
default  is  the  recommended  transparent Birds-eye command 
"'AQBIRD", as this will allow you to bring up the  Birds-eye 
anywhere  on  the  graphics screen while in the middle of an 
AutoCAD command.

14.	Exit the Aquila Display configuration menu and the Video 
Display configuration menu.

15.	Configure pointer (mouse or tablet), printer and plotter 
as needed.

16. 	Return to the main menu and save the configuration results.

AutoCAD 12 AVE Re-Configuration
-------------------------------

The Aquila driver is a combined display and rendering device 
driver and supports 15, 16, 24 and 32 bit  rendering  within 
AutoCAD.  AutoCAD's AVE Rendering must be configured for the 
Aquila driver.

1.	If you are reconfiguring AutoCAD,  delete  your  current 
AVE.CFG file.

2.	Once  in  AutoCAD,  either  type  RCONFIG at the AutoCAD 
Command  prompt,  or  select  from   the   pulldown   menus, 
RENDER/PREFERENCES/Reconfigure. 

3.	When  you  configure  the  rendering  driver for AutoCAD 
Render, select  option  1,  AutoCAD's  configured  P386  ADI 
combined display/rendering driver. (Do not select option 2).

 4.	Select  the  S3  Rendering  resolution you want from the 
menu list of available resolutions supported by your system. 
Your selection  must  be  compatible  with  any  limitations 
related to your current AutoCAD display configuration.  

	All  resolutions  listed  will  work when rendering to a 
full-screen with a single monitor system. 

	With a dual-monitor configuration, select rendering to a 
viewport (because currently AutoCAD  12c2  does  not  return 
properly from rendering to a separate screen).

	If  your  AutoCAD  display  resolution  is  set  to  any 
16-color resolution, then you must render to the full screen 
instead of a viewport. Any resolution may be selected.

	If  your  AutoCAD  display  resolution  is  set  to  any 
256-color  resolution  and you plan to render to a 256-color 
viewport, select the same resolution for  your  display  and 
renderings.  When rendering to a viewport, AutoCAD's display 
driver controls the rendering resolution.

	If you select the 32K or 64K color modes,  you  will  be 
asked  if  you wish to enable "Band-Free" mode, which allows 
the best color quality possible in a 15- or  16-bit  device. 
Select Low, Medium or High.

5.	Select  whether  you  wish  to render to a viewport or a 
full screen (see step 4 above for limitations). 

6.	Configure any hardcopy device as needed.

7. 	Exit the configuration menu and save your changes.

AutoShade 2.1 Configuration
---------------------------

1.	Install   the   Aquila   files   as   described    under 
installation.  Set  the  environment  and  font variables as 
described above under Basic and  Font  Configuration.  Rerun 
your  batch  file  if  needed to initialize your environment 
variables.

2.	Start AutoShade 2.1, with  the  reconfiguration  command 
SHADE /R.

3.	Select the correct pointing device.

4.	Select option #2 "P386 Autodesk Device Interface display 
driver".

5.	Choose  option  #1  to  activate  the  list  of  display 
resolution modes for the interactive screen. Select one.

6.	Choose  option  #2 to activate the Color menu and select 
colors to use for Menus, Pop-ups, Background, etc.

7.	Save and exit the colors menu.

8.	Select  option  #2  "P386  Autodesk   Device   Interface 
rendering driver".

9.	Choose  a resolution mode for the rendering (shading and 
RenderMan) screen.

10.	If you select the 32K or 64K color modes,  you  will  be 
asked  if  you  wish to enable "Band-Free" mode which allows 
the best color quality possible in a 15 or  16  bit  device. 
Select Low, Medium or High.

11.	Answer the next 3 questions with a "YES", since only one 
screen is used, and must be redrawn upon switching.

12.	Select a hard copy device option.

13.	Configuration is complete and the AutoShade main display 
should appear.

3D Studio 1.0 Configuration
---------------------------

Verify  that  the  environment  variables listed under Basic 
Configuration, above, are initialized before proceeding with 
your 3D Studio configuration.

1.	Go to your 3D Studio 1.0  subdirectory,  e.g.,\3DS,  and 
edit and make the following changes to the 3DS.SET file.

		Change  the  line  that  starts  with  DEFAULT-DISPLAY = 
	"VGA320X200" to read DEFAULT-DISPLAY = "RCPADI".

		Change the  line  that  reads  MAIN-DISPLAY  =  to  read 
	MAIN-DISPLAY = RCPADI. Delete any leading semicolon (;) that 
	may be present.

		Change the line that reads MATERIAL-DISPLAY = VGA320X200 
	to  read  MATERIAL-DISPLAY  =  RCPADI.  Delete  any  leading 
	semicolon.

	Save the file and exit the editor.

2.	Delete the file 3DADI.CFG, if present.

3.	Start 3D Studio with the command 3DS.

4.	To  configure  the  Main  Display,  select  Option 1 and 
select a 256-color resolution for the Main display. The Main 
Display mode will be used for the 2D Shaper, 3D  Lofter,  3D 
Editor, and Keyframer.

5.	To configure the Materials Editor display, select Option 
1  and  select  a  256-color resolution. Use of a resolution 
greater than 640 x 480 will not increase the  usefulness  of 
the Materials Editor at all.

6.	You  should now find yourself inside the 3D Editor of 3D 
Studio. 

7.	The first time that you try to render a drawing or  view 
an  image,  you  will  be  asked  to Configure the Rendering 
Device and select a resolution for Rendering. If you  select 
the 32K or 64K color modes, you will be asked if you wish to 
enable  "Band-Free" mode. This allows the best color quality 
possible in High Color modes. Select Low, Medium or High. 

8.	Configuration is now complete.

3D Studio 2.0 Configuration
---------------------------

Verify that the environment  variables  listed  under  Basic 
Configuration, above, are initialized before proceeding with 
your 3D Studio configuration.

1.	Go  to  your  3D Studio 2.0 subdirectory, e.g., the \3DS 
directory, and edit and make the following  changes  to  the 
3DS.SET file.

		Change  the  line  that  starts  with  RENDER-DISPLAY  = 
	VGA320X200 to read RENDER-DISPLAY = RCPADI.
	
		Change  the  line  that  reads  MAIN-DISPLAY  =  to read 
	MAIN-DISPLAY = RCPADI. Delete any leading semicolon (;) that 
	may be present.
	
		Change the line that reads MATERIAL-DISPLAY = VGA320X200 
	to  read  MATERIAL-DISPLAY  =  RCPADI.  Delete  any  leading 
	semicolon that may be present.
	
	Save the file and exit the editor.

2.	Delete the file 3DADI.CFG, if present.

3.	Start 3D Studio with the command 3DS. Answer  Y  to  the 
question about having a VGA or SVGA.

4.	To  configure  the  Main  Display,  select  Option 1 and 
select  a  256-color  resolution  mode  for  the  "ADI  main 
display". The main display mode will  be  used  for  the  2D 
Shaper,  3D  Lofter,  3D  Editor, and Keyframer.  Select any 
resolution, then select option 0 and exit.

5.	To configure the Materials Editor display, select Option 
1 and select a 256-color resolution  for  the  "ADI  MEDIT", 
Materials Editor. Use of a resolution greater than 640 x 480 
will  not increase the usefulness of the Materials Editor at 
all.

6.	Answer N to the question about "Will RDPADI render to  a 
separate screen?".

7.	Select  a  resolution  mode  for  the Rendering "RDPADI" 
Device. If you select the 32K or 64K color modes,  you  will 
be asked if you wish to enable "Band-Free" mode. This allows 
the  best color quality possible in High Color modes. Select 
Low, Medium or High.

8.	Answer the question  about  "Will  RCPADI  render  to  a 
separate screen?". If using Aquila for an 8514/A, the answer 
is "yes", for all others, the answer is "no".

9.	Select  a  resolution  mode  for  the Rendering "RCPADI" 
Device. Select the same resolution as you selected for  step 
7.  This  will  be  the active rendering resolution for most 
configurations.

10.	Configuration is now complete.

Aquila Display List and Special Features for AutoCAD
----------------------------------------------------

AutoCAD Screen Layout
---------------------

	Current Color Display - The rectangle in the top left of 
the screen displays the current drawing color.

	Logo - The manufacturer's logo  is  displayed  near  the 
lower right corner of the screen.

	Display  Status  Area  -  This area is located below the 
Logo Area and is present only when the display list has been 
enabled. It contains three lines of text as follows:

	System Memory Status - The topmost line of text  in  the 
Display  Status  Area  provides a percentage of total system 
memory that is being used by AutoCAD. AutoCAD may  start  to 
slow  down  when this amount exceeds 100%. After this figure 
exceeds 150%, "paging" will occur.

	Display/Screen Lists Memory Status - The middle line  of 
text  indicates  memory usage by the Aquila display list and 
screen list.

numberK	indicates amount of memory currently used by display 
list

Empty	indicates  there  is  no  drawing  in  memory,  anew 
drawing, this line 

Overflow 	indicates the memory  required  by  the  display 
list exceeds available display list memory

Disabled	indicates   that   the  display  list  has  been 
disabled because excessive paging has occurred

	Display List Status - The third or lowest  line  of  the 
Display  Status  Area  lists  abbreviations  to indicate the 
current status of display list  features.  Key  letters  are 
present only when the display list is enabled.

D	32 bit display list data is in use.

d	16 bit display list data has been selected.

Z	Zooming from the display list is allowed. 

z	Pspace and perspective zooms by AutoCAD. Birds-eye View and
    Edge-Pan will not work in viewport.

S	Redraw list is enabled. (this option is not available for
    AutoCAD 12)

s	Redraw list is turned off.

P	Page alarm enabled and paging occurred recently.

p	Page alarm enabled and no paging has occurred.

E	Edge-pan enabled. Edge pan is impending.

e	Edge-pan enabled but none impending.



Display  List Memory Management Configuration for AutoCAD 11 
and 12 
---------------------------------------------------------------- 

This  section covers the configuration of the Aquila display 
list memory management features for AutoCAD available  under 
option  #4  of  Aquila's AutoCAD display configuration menu. 
The Aquila display  list  uses  dynamic  memory  management, 
wherein  memory  keeps  on  growing  as  it is needed.  This 
requires a minimum amount of operator  interaction,  and  is 
almost  carefree.   Please  pay  careful  attention  to  the 
information  presented  here,  since  this  will  affect the 
performance of Aquila under AutoCAD.   Some  experimentation 
will be necessary in order to make Aquila work optimally for 
your particular environment and needs. 

1.	The  first  option  available in the Display List memory 
management submenu is "Enable Display List?". Answering "No" 
will end the display list configuration choices.

2.	If you are configuring for Release 12, you will next  be 
asked  "Enable  32  bit  regens?" Enabling this feature will 
greatly reduce regens, thereby providing  faster  operation. 
The  down  side  of this choice is that Aquila will use more 
memory for the display list. If you select "No"  or  if  you 
are  using  AutoCAD  11, you will be configured for a 16-bit 
display list.

3.	Next you will  be  asked  to  select  a  dynamic  memory 
management performance level; (1) "Miserly", (2) "Normal" or 
(3)  "High  Performance".  If you have very little memory in 
your machine, then select Miserly.  If  your  have  lots  of 
memory, select High Performance. Otherwise, select Normal. 

4.	If you are configuring for Release 11, you will be asked 
if  you wish to "Enable redraw list?" Answering "Yes" allows 
you to enable a faster redraw method. This will consume some 
additional memory, but it does improve redraw speeds.

Display List Feature Configuration for AutoCAD 11 and 12
--------------------------------------------------------

This section covers the configuration of the Aquila  display 
list  features  available under options #3 and #5 through #9 
of the Aquila display configuration menu for AutoCAD.

Graphics Flip-screen (Option #3) 

If enabled, the AutoCAD  text  screen  will  appear  in  the 
center  of  the  graphics  screen.  This eliminates the mode 
switching delay common  to  most  multi-frequency  monitors. 
When  enabled  the graphics Flip-screen will emulate the VGA 
text window. Use the F1 key to toggle between modes. If  you 
wish  to  execute  any  DOS commands, Aquila will switch the 
screen to a full-screen text  mode  allowing  for  full  DOS 
compatibility. 

If  you  are  using an after-market TSR product that pops up 
into the screen during AutoCAD  sessions  (calculator,  plot 
spooler,  etc.) or you wish to use the Print-screen function 
while in the text screen,  then  you  should  not  use  this 
option.  Flip-screen  is  automatically  disabled  for  dual 
monitor operation.

Erase buffer (Option #5) 

Answering  Yes  to "Enable erase buffer?" brings up a second 
question "Erase  buffer  size?".  This  will  determine  the 
number  of  erased objects it takes before Aquila will start 
an automatic  "cleaning"  cycle  to  remove  them  from  the 
display  list.  Select  a  higher value if you plan on doing 
much large drawing editing. The erase  buffer  can  also  be 
disabled,  enabled and resized from within AutoCAD by typing 
"AQEBUF=0"at the command prompt to disable  and  "AQEBUF=xx" 
to enable or resize, where xx is the new size.

When  AutoCAD  erases  objects from the drawing database, it 
erases them from the screen as well. Sometimes  this  action 
causes  other objects to appear erased as well. The "redraw" 
command has no effect, but a "regen" causes the  objects  to 
appear  correctly.  This  problem can be solved by using the 
erase buffer to correct the display corruption  that  occurs 
when  objects are erased from the drawing. Normally, AutoCAD 
will request that the driver erase a line from the screen by 
drawing it in black. This causes the erased object to  flash 
on and off the screen during redraws.

Another  side effect is that objects near the erased one may 
appear to be incomplete. To  correct  this  in  the  fastest 
manner  possible, Aquila will keep a list of erased vectors, 
and erase them only when the buffer fills.  This  speeds  up 
block  erasures  considerably.  The  custom  command, AQCLN, 
discussed below, can also be used to clear the erase buffer.

There  are  certain  after  market  software  packages   for 
AutoCAD, such as CAD Overlay, which rely upon the ability to 
draw  objects  in black (background color). If you are using 
one  of  these  packages  and  the  screen   images   appear 
distorted, then you need to disable the erase buffer.

Paging Alarm (Option #6)

Answering  "Yes"  to  "Enable  Page-Alarm?"  will bring up a 
second  prompt  about  the  sensitivity  setting   for   the 
Page-Alarm.

When  AutoCAD's  memory  requirements  exceed  the amount of 
physical  memory  available  in  your  machine,  it   begins 
"paging"  in  order  to gain extra memory. Paging means that 
certain memory areas are traded back and forth with a  "swap 
file"  on  the  hard  drive. Due to the difference in access 
speed between main memory, and this "virtual" memory that is 
on the hard drive, AutoCAD begins to slow down, often to the 
point of being unusable. To combat this, memory is used very 
sparingly, and only when absolutely necessary. As  a  second 
line  of  defense  against paging, when the amount of memory 
paged out to disk exceeds several preset thresholds,  Aquila 
begins shutting down extra functions, and returns the memory 
to AutoCAD.

When  paging  activity  exceeds  the  first  threshold,  the 
screen-list feature is disabled and all associated memory is 
returned  to  AutoCAD. At this point, the screen list status 
line, the  lowest  line,  will  disappear  from  the  status 
window. Should paging activity continue, Aquila will disable 
the  display  list  feature and return all of that memory to 
AutoCAD. When that has been done, the middle line of text in 
the status area will say "Disabled", to  indicate  that  all 
display  list  functionality has been terminated. The driver 
will continue to function as normal,  but  redraws  will  be 
slower. However, AutoCAD itself will now be much faster than 
it  was  when  the  paging was occurring. This allows you to 
complete your drawing session in much less time.

Edge Pan (Option #7)

Edge-pan is used to move around while zoomed into a drawing. 
By leaving the cursor  near  the  border  of  the  currently 
active  viewport,  Aquila will automatically begin to pan in 
that direction. This only begins if the cursor is left  idle 
for  a predetermined length of time. The default is Edge-pan 
disabled.  

Experimentation with the Edge-pan settings  will  yield  the 
best  results for your needs. There are nine custom Edge-pan 
commands provided with the Aquila driver. Edge-pan  settings 
may  be  adjusted either in the configuration menu or within 
AutoCAD by typing at the command prompt  "AQEPAN  ON"  or  " 
AQEPAN  OFF".  Please  refer  to  the  list of custom Aquila 
commands  given  below  for  additional  custom   Edge   Pan 
commands.

Birds-eye View (Option #8 & 9)

The  Birds-eye  feature  allows  fast  transparent zooms and 
pans. The  Birds-eye  can  be  activated  either  by  typing 
"'AQBIRD"  or  by  double-clicking on the mouse or digitizer 
button specified during configuration. 

When activated, the Birds-eye window will appear  under  the 
current  cursor  location.  The  window  will  show  a small 
overall view of  the  drawing  that  AutoCAD  has  currently 
placed in Aquila's display list. Within the Birds-eye window 
a highlighted rectangle indicates the currently viewed area, 
and  an  outline  rectangle  indicates the area that will be 
shown if a Birds-eye zoom is completed.  If  this  rectangle 
contains  an "X" in the middle, then the Birds-eye is in pan 
mode.  If  this  rectangle  contains  an  arrow,  then   the 
Birds-eye is in zoom mode. 

Pressing the pick button on your mouse or digitizer (usually 
the  left  button  for a mouse) allows you to toggle between 
zoom and pan modes in the  Birds-eye  window.  Pressing  the 
selection  button  on your digitizer causes the Birds-eye to 
disappear and the selected view to be used in the  currently 
active  viewport.  A new zoom will be executed if necessary. 
Moving the  cursor  outside  the  Birds-eye  window  without 
making  a selection will cancel the function. This Birds-eye 
will work in multiple viewport drawings, and will appear  in 
the aspect ratio of the currently active viewport.

The  Birds-eye  can be resized at any time during an AutoCAD 
session by  typing  "AQBESZ=xx",  where  xx  is  any  number 
between  10  and  50  and  represents  the percentage of the 
graphics screen size for the new Birds-eye size.  The  image 
inside the Birds-eye when it is activated can be manipulated 
without causing a "regen" in Release 12 by using the "AQZWI" 
command. By performing a "ZOOM ALL" followed by an "AQZWI" , 
you  will be able to zoom in and out of your drawing as much 
as possible without causing further regens.

Band-Free Rendering

When using the 15 or 16 bit rendering modes, often times the 
images appear "banded". This banding or  staircasing  occurs 
most  often  on objects with large sloping or gently curving 
surfaces. Band-Free rendering improves the image quality  in 
these modes. 

The  "Band-Free" effect can be controlled as well. It may be 
set to "Low", "Medium", or "High", depending upon  how  much 
of  the  banding you want to eliminate. This feature will be 
of limited use to users of AutoShade, but is  beneficial  to 
users of Autodesk RenderMan and 3D Studio.

Custom Aquila Commands for AutoCAD

Aquila  provides  a  number of custom commands which provide 
status information about memory usage for the Display  list. 
Additional  commands  enable  the  user to reset or redefine 
Aquila Edge-pan and Birds-eye features from within  AutoCAD. 
Below is a summary of the custom Aquila commands.

AQHLP	The help screen function displays a list of all  the 
driver  local  commands,  and  gives  a brief description of 
each.  This command  is  best  executed  from  the  text  or 
flip-screen.

AQDLQ	Displays  on a text-or flip-screen all the viewports 
currently in use, along with some  useful  statistics  about 
each  one.   This  command is best executed from the text or 
flip-screen.

AQDRQ  	Displays  current  display  resolution  and  memory 
allocation statistics (CTRL-L provides the  same  function). 
).  When  executed  from  the command prompt of the graphics 
screen, only a three-line summary will be given.

AQCLN	Removes objects  from  display  list.  "Cleans"  the 
drawing display.

AQBIRD	Displays  Birds-eye window underneath current cursor 
location.  This  command  is  not  designed  to   work   for 
paperspace or perspective viewports.

AQEPAN ON/OFF	Toggles on and off the Edge-pan feature.

AQPL	Pan  to  the  left  by  25 percent. Regens are never 
authorized by the pan or zoom in/out Aquila commands.

AQPR	Pan to the right by 25 percent.

AQPU	Pan up by 25 percent.

AQPD	Pan down by 25 percent.

AQZI	Zoom in by 50 percent.

AQZO	Zoom out by 50 percent.

AQZWI	"Zoom way in" while using  the  same  scale  factor, 
will  cause a regen. By performing a ZOOM ALL followed by an 
AQZWI you may zoom around your drawing as much  as  possible 
without a regen. (AutoCAD 12 only)

AQBESZ=xx	Resize  the  Birds-eye  window.  Valid number is 
between 10 and 50, and it is a percentage  of  the  graphics 
screen size.

AQPANSCR=xx	Amount  of the viewport scrolled by the edge-pan 
feature. Valid number must be between 10 and 80, and it is a 
percentage of the viewport size.

AQPANBRD=xx	Width of the edge-pan border given in number  of 
pixels. Valid number must be between 5 and 50.

AQPANTM1=xx	Amount  of  initial  delay  given  in  number of 
"clicks" or fractions of a second used before  the  edge-pan 
begins. Valid range is 10 to 64.

AQPANTM2=xx	Amount  of  time before another edge-pan begins. 
Valid range is 1 to 18.

AQEBUF=xx	Size of the erase buffer. Using 0 turns off  the 
buffer.

==========================================================================
 Microstation PC Driver (DOS 386 Protected Mode 4.0)
==========================================================================

This  driver  supports  MicroStation  PC 4.0 for the DOS 386 
protected mode environment. The first time  this  driver  is 
used,  it will present the user with a menu of all available 
resolution  modes.  One  must  be  selected,  and   then   a 
configuration  file will be created that the driver will use 
for subsequent MicroStation sessions.

To   re-configure    the    driver,    erase    the    files 
\USTAT40\DRIVERS\ *.CFG and run the USTATION.bat file again.


MicroStation PC 4.0 Driver Installation
---------------------------------------

1.  Install the drivers as described in the manual.

2. Change the current directory to the \USTAT40 sub-directory,
or the one which contains the MicroStation application. 

3. Run the USCONFIG program to select the new device driver.

	a.	Select "Display Adapters" entry.

	b.	Select "VENDOR SUPPLIED DRIVER" option.

	c.	Select "PMGL4S3 v1.09 for S3 Accelerators" option.

	d.	Select second adapter options as needed.

	e.	Select Swap Screen Status Y or N.

	f.	Select "Exit and Save".

	g.	Run USTATION.bat from the \USTAT40 subdirectory.

	h.	Select the desired mode from the list of supported
        resolutions.

	i.	MicroStation PC 4.0 will now be launched.

This driver will work with a Hercules-compatible MDA card as 
the second graphics device. This can be configured as either 
the  "Primary"  (right  screen)  or  "Secondary" (left side) 
graphics device. 

SWAP screen capabilities are supported if a 256  color  mode 
is  configured.  If  the  initialization  code  is unable to 
determine which mode to use, it will always default  to  the 
640  x  480  x 256 color mode. The driver will exit if it is 
not able to find an S3-based graphics card.

===========================================================================
 Microstation PC 5.0 Driver (DOS 386 Protected Mode 5.0)
===========================================================================

This driver  supports  MicroStation  5.0  for  the  DOS  386 
protected  mode  environment.  The first time this driver is 
used, it will present the user with a menu of all  available 
resolution   modes.   One  must  be  selected,  and  then  a 
configuration file will be created that the driver will  use 
for subsequent MicroStation sessions.

To    re-configure    the    driver,    erase    the   files 
\USTAT50\DRIVERS\*.CFG  and   run   the   MicroStation   5.0 
USTATION.bat file again.

Supported modes for S3 hardware configurations include:

Mode	Resolution	Colors

 0      640 x 480   256
 1      800 x 600   16
 2      800 x 600   256
 3      1024 x 768  16
 4      1024 x 768  256
 5      1152 x 864  256
 6      1280 x 1024 16
 7      1280 x 1024 256 (2 MBytes of memory)
 8	reserved

Please note that not all resolution modes may be available.


MicroStation PC Driver Installation
-----------------------------------

1.   Change   the   current   directory   to  the  \USTAT50 
sub-directory, or the one  that  contains  the  MicroStation 
application. 

2.	Run  the  USCONFIG  program  to  select  the  new device 
driver. 

    a.  Select Generate for: DOS

	b. 	Select "Display Adapters" entry.

	c.	Select Right Screen Graphics Adapter "MGL5S3 v1.01 for S3
        Accelerators" option.

	d.	Select Left Screen Graphics Adapter No second adapter.

	e.	Select Swap Screen Status Y or N .

	f.	Select "Exit and Save".

	g	Run the USTATION.bat from the \USTAT50 subdirectory.

	h.	Select the desired mode from the list of supported
        resolutions.

    I.  Respond Y or N to Use Hardware scrolling.

		By accepting the default of "Yes", scrolling will be 
faster but thick diagonal lines will display  notches  after 
the scroll. (Selecting the UPDATE icon from the Main Palette 
will refresh the display.)

	j.	MicroStation 5.0 will now be launched.

SWAP  screen  capabilities are supported if a 256 color mode 
is configured. If  the  initialization  code  is  unable  to 
determine  which  mode to use, it will always default to the 
640 x 480 x 256 color mode. The driver will exit  if  it  is 
not able to find an S3-based graphics card.



============================================================
Power management screen saver
============================================================

    Power management screen saver

    About the screen saver
    ----------------------


    The  Display  Power  Manager  for  Windows  3.1  provides  a
    mechanism  to  control  the  amount  of  power  used  by   a
    computer's  monitor.   It  provides  a  total of 5 levels of
    power savings.


    The screen saver is installed when you install  the  drivers
    and  select  'Windows  3.1  Drivers'. To activate the screen
    saver, select the 'desktop' icon in the  CONTROL  PANEL  and
    select 'Power Management Screen Saver' as the current screen
    saver.


    The first level is a conventional screen  saver  that  turns
    the  screen  black  with  the  SVGAX3 Logo. The black screen
    provides substantial power savings and  the  logo  lets  you
    know that the computer is still active.


    The  other  four  levels  of power savings are...

    Reduced  on  mode  -  Reduced  on  mode is an optional power
    saving state that allows the  computer  to  use  some  power
    savings  while  still  fully  operational. Currently this is
    limited to some portable computers that can lower the  power
    usage  on  their LCD displays.  This causes some degradation
    of display quality.


    Stand by mode - Stand by mode is an  optional  power  saving
    state  that  gives  minimal  power savings, but provides the
    fastest recovery time. It is enabled by blanking the  screen
    and  lowering  the  horizontal  rate to less than 10 Hz with
    less than a 25% duty cycle.  There is no change to  vertical
    timing.


    Suspend  mode  -  Suspend mode is a mandatory state in which
    substantial power savings are achieved by the display.   The
    trade  off is that recovery times are longer than from stand
    by mode.  It is enabled by blanking the screen and  lowering
    the  vertical  rate  to less than 10 Hz with less than a 25%
    duty cycle.  There is no change to horizontal timing.


    Off mode - Off mode provides  the  highest  level  of  power
    savings  and the longest recovery times.  With this mode the
    display is actually turned off so that  recovery  times  are
    equivalent  to  switching  the  monitor on. It is enabled by
    blanking the screen and lowering  both  the  horizontal  and
    vertical  rates to less than 10 Hz with less than a 25% duty
    cycle.

    They match the power saving modes defined by the VESA VBE/PM
    (see below) standard. As you move down from one mode to  the
    next,  the amount of power being saved is greater, but so is
    the amount of time that it takes for a  monitor  to  recover
    and  be  ready  to display data. The screen saver will cycle
    through all of the selected power  saving  modes  one  after
    another  until  the  maximum  selected power saving mode has
    been reached.  The number of minutes that is  specified  for
    each  level is the number of minutes after the previous mode
    has been enabled.  It is not the total time before  entering
    that mode.


    If  the  password checkbox is enabled, then the screen saver
    will prompt the user for a password  before  it  quits.  The
    password  is the same one that is used for other Windows 3.1
    screen savers.


    The Energy Star program Energy Star is a program created  by
    the  EPA  to  promote  energy  efficiency.  The goal of this
    program is to lower electricity usage  by  making  computers
    and   related  hardware  more  energy  efficient.  Computers
    currently use an  estimated  5%  of  commercial  electricity
    consumption.   If  no  actions are taken, this could rise to
    10% by the year 2000. Ironically, much of  this  electricity
    is  wasted.   Research  shows that the vast majority of time
    personal computers are on, they are  not  actively  in  use.
    Additionally  30%  -  40%  are  left running at night and on
    weekends.  Electricity generation accounts for  35%  of  all
    U.S.   emissions  of  carbon  dioxide  -  the most prevalent
    greenhouse gas.  It also accounts for 75%  and  38%  of  all
    U.S.    emissions  of  sulfur  dioxide  of  nitrogen  oxides
    respectively - the two pollutants most responsible for  acid
    rain.

    By  using  more  energy-efficient  equipment  in  our homes,
    offices and factories, we can reduce this pollution -  while
    saving   money.  The  Energy  Star  logo  is  used  to  mark
    computers, peripherals and software that  have  adopted  the
    EPAs power saving guidelines.

    For  more  information  on  the  Energy Star program contact

    Linda Latham,
    Manager Energy Star Computers
    U.S. EPA (6202J)
    Washington, DC 20460
    Phone: (202)233-9230
    Fax: (202)233-9578

    VESA VBE/PM The VESA VBE/PM is a software interface  to  the
    VESA (Video Electronics Standards Association) DPMS (Display
    Power Management Signalling) standard.  For more information
    on  VESA and these specifications contact them at:

    VESA 2150
    North  First  Street
    San   Jose,   Ca   95131-2029
    Phone: (408)435-0333 Fax: (408)435-8225



