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1992-03-22
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SVGA
An Image Viewing Utility
Version 1.02 - March 1992
Program Reference Manual
Copyright (C) 1992 by John P. Silva
All Rights Reserved
John P. Silva
3429 Maywood Dr.
Richmond, CA 94803 U.S.A.
(510) 222-9255
Internet: jsilva@cogsci.berkeley.edu
GE Mail: J.SILVA1
SVGA Version 1.02 Page 1 March 1992
TABLE OF CONTENTS
SVGA LICENSE INFORMATION 2
Shareware & Registration 2
Terms and Conditions 2
Limited Warranty 3
Limitation of Liability 3
Shareware Distributor License Agreement 3
Trademark Information 3
INTRODUCTION 4
Program Description 4
Features 4
Machine Requirements 4
Installation 4
USING SVGA 5
SVGA Command Line 5
SVGA Environment Variable 5
File Selection Screen 5
Getting Help 5
Moving Around 5
View Image 5
Change Directory 5
Change drive 6
Toggle 4DOS Description Display 6
Toggle Image Resolution Display 6
Toggle 43/50 Line Mode 6
Change Display Resolution 6
Get File Information 6
Edit 4DOS Description 6
Rename File 6
Delete File 6
Image Display Screen 6
Getting Help 6
Moving Around 6
Color Mix 6
Change Display Resolution 6
SVGA Version 1.02 Page 2 March 1992
SVGA LICENSE INFORMATION
Shareware & Registration
SVGA is Copyright (C) 1992 by John P. Silva. All Rights Reserved.
SVGA is SHAREWARE, user supported software for the IBM PC. SVGA is
made available for a free 30 day trial period. If you find this
program useful, you may license your copy of the program for use on
one machine by sending US$15 (see below) to:
John P. Silva
3429 Maywood Dr.
Richmond, CA 94803 U.S.A.
Terms and Conditions
SVGA is copyrighted software, and all rights are reserved. SVGA may
not be changed or modified in any way except by the author. SVGA is
SHAREWARE, and may be freely distributed, as long as it remains in
its complete form with all support and documentation files. It may
be used for a 30 day free trial period. Regardless of how the copy
is obtained, it is requested that all users comply with the
following licensing and registration provisions if they continue to
use it after the 30 day trial period:
You may license multiple copies of SVGA with discounts as follows:
1 - 10 copies US$15
11 - 50 copies 20% discount
51 - 100 copies 35% discount
101+ copies 50% discount
Site License US$750
All prices and discounts are subject to change without notice.
Discounts apply only to individual orders, they are not cumulative.
Registration entitles you to:
Use all updates at no cost.
Receive free updates by sending me a diskette and a self
addressed stamped disk mailer.
Receive free technical support either by phone (you call me)
or by letter.
SVGA should be distributed intact, with all executable and
documentation files.
A registered user may install SVGA on more than one machine,
provided he is the only user on each machine. The registration and
license policy is similar to a book, which can be taken with you but
used only by you.
SVGA Version 1.02 Page 4 March 1992
Limited Warranty
The author makes no warranty of any kind, either expressed or
implied. This includes, but is not limited to, implied warranties
of merchantability, and fitness for any particular purpose with
respect to both the software and the documentation included in this
package.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
CONSEQUENTIAL, OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR
INABILITY TO USE THIS PRODUCT EVEN IF THE AUTHOR HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES OR CLAIM. Some states do not allow
the exclusion or limitation of liability for consequential or
incidental damages, so the above limitation may not apply to you.
The warranties set forth above are in lieu of all other express and
implied warranties, whether oral, written, or implied, and the
remedies set forth above are your sole and exclusive remedies.
Limitation of Liability
In no case shall the authors liability exceed the license fees paid
for the right to use SVGA or five dollars (US$5.00), whichever is
greater.
Shareware Distributor License Agreement
Shareware distributors may distribute this program as long as the
Author has been notified prior to ANY distribution. The "per disk"
charge may not exceed $10 and the shareware distributor will not
change the above license agreement for the end user of SVGA. End
users are still required to register each shareware copy of SVGA.
Trademark Information
Graphics Interchange Format (C) Copyright CompuServe Incorporated.
GIF(sm) is a Service Mark owned by CompuServe Incorporated. For
further information, please contact:
CompuServe Incorporated, Graphics Technology Department,
5000 Arlington Center Boulevard, Columbus, Ohio 43220, USA
4DOS(tm) is a trademark of JP Software, Inc.
Other product and company names are trademarks of their respective
owners.
SVGA Version 1.02 Page 5 March 1992
INTRODUCTION
Program Description
SVGA is an easy to use multi-format image viewer designed to quickly
browse through a collection of image files.
Features
SVGA is a general purpose image file viewer for VGA and SuperVGA
with the following features:
* High speed viewing of the following image formats:
1. CompuServe GIF87a and limited GIF89a support. SVGA only
supports the image storage portion of GIF89a, not the
pseudo-animation and text extensions.
2. ZSoft PCX files (except 24 bit images).
3. MicroSoft Windows BMP files (except 24 bit images), both
compressed and uncompressed.
* Self configuring for most display boards using Ahead, ATI, C&T,
Everex, Genoa, NCR, Headland, Oak, Paradise, Trident, Tseng Labs
(ET3000/ET4000), Video 7, Western Digital, and Zymos VGA chips.
SVGA fully supports the VESA standard, and will use the VESA
standard (through BIOS or TSR support) if detected.
* SVGA can view images much larger than the available video hardware
may allow. This