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1993-02-18
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Frequently Asked Questions
==========================
The Right Stuff:
---------------
IN JULY OF 1992, WAS COMPUSHOW USED BY THE CREW OF THE SPACE SHUTTLE ON
MISSION STS-50 TO VIEW DIAGRAMS OF AN EXPERIMENTAL LIFE SUPPORT SYSTEM WHICH
THEY NEEDED TO REPAIR, WHEN THEIR PRIMARY "TEXT AND GRAPHICS SYSTEM" JAMMED
AND SCANNED GRAPHICS IMAGES HAD TO BE TRANSMITTED TO THEM FROM THE GROUND?
(Oh, thanks for asking!) The answer is a resounding YES!
A CompuShow support BBS:
-----------------------
IS THERE A BBS WHERE YOU SUPPORT COMPUSHOW?
While it's not "our BBS", we log on every day to answer questions.
The One-Stop Bit BBS 602-282-9035
To contact me, leave a message for Bob Berry.
Converting to GIF:
-----------------
HOW CAN I CONVERT OTHER GRAPHICS TO GIF FORMAT?
WHAT'S "COMPUMAKE TOOLS"?
CompuMake Tools, our graphics conversion utility is described in CATALOG.DOC
CompuShow upgrades:
------------------
WHAT'S YOUR POLICY ON UPGRADES FOR REGISTERED USERS?
As we release new versions of CompuShow, registered users are notified by
mail, and may upgrade for a "nominal cost". For the past couple of years,
we've held this cost to $9 ($5 for anyone who received the previous version
within 60 days of the release of the new version). We'll try to stick to the
$9/$5 upgrade prices as long as we can afford it.
I JUST SAW A NEW VERSION ON A BBS, BUT HAVEN'T RECEIVED AN UPGRADE NOTICE!
New releases of CompuShow sometimes seem to travel at the speed of light.
Our first step is to post a new release on the One Stop Bit BBS, CompuServe
and GEnie and then mail copies to our list of BBS SysOps and ShareWare
distributors. It may take a couple of weeks to mail notices to registered
users.
Keep in mind that "minor revisions" (like 8.41 compared to 8.40) have small
changes that don't justify a mailing to all registered users. If you want to
upgrade to the latest "minor revision", contact me for costs.
Finally, keep in mind that you may have a COUNTERFEIT! (See WHATSNEW.DOC for
more information about hacked versions of CompuShow.)
[Q&A.DOC] Page 1
CompuShow and Windows:
---------------------
I'M HAVING PROBLEMS USING COMPUSHOW IN WINDOWS
We've had some (limited) success making Windows work. In general it seems
that Windows doesn't like DOS applications to do graphics, however sometimes
these will make a difference:
- Make a "PIF" file for CompuShow
- Run Windows in standard mode, rather than 386 enhanced mode
- Put FILES=60 in CONFIG.SYS
- If CONFIG.SYS has EMM386.SYS add "D=48" to that line.
Unrecognized Graphics Files:
---------------------------
I DOWNLOADED A GIF FROM A BBS, BUT COMPUSHOW SAYS IT'S NOT A GIF
It was probably uploaded by someone with an Apple computer, and has the
infamous 128 byte "MacBinary header". A legitimate GIF file starts with
"GIF87a" (or "GIF89a") in the first six bytes, so this "header" which some
Apple software tacks on the front end of the file, actually creates a
corrupt GIF. If the BBS SysOp doesn't have a program for stripping the
header, we have one (UNMACA.EXE) on the One-Stop Bit BBS.
I KNOW I'VE GOT A LEGITIMATE GRAPHIC IMAGE, BUT IT'S NOT RECOGNIZED
Some programs which claim to produce a standard graphic file, may not
conform to the official specification. If you find examples that CompuShow
can't handle, we'd appreciate a copy of the file, so that we can add support
for the format. However, some compression schemes (such as RIX) are
confidential, so we can't support them.
Missing Files
-------------
WHY DOES A BOX POP UP EVERY TIME I RUN THE PROGRAM, SAYING THAT THERE ARE
FILES MISSING?
At program start-up, (the standard/ShareWare version of) CompuShow checks to
see that all the documentation and support files are on the same disk and
sub-directory as the program. Once it finds all the files there and creates
CSHOW.DAT, you can erase the documentation files, drivers, etc.
UNIX (and some LAN software) don't preserve the original file date and time
when the files are extracted from a ZIP or other archive. This makes
CompuShow think that all the files have been modified! (Reset the date and
time on all files to what's stored in the archive.)
If you move the program to another computer, pass it on to a friend, or post
it on a BBS, you must include all the original files. In addition, if you
modify your computer (add memory, upgrade the video adapter, etc.) CompuShow
will detect that it's not the same computer, and will look for the
documentation and support files again (so keep a copy somewhere.)
[Q&A.DOC] Page 2
Video Drivers:
-------------
I'VE GOT A NEW GRAPHICS ADAPTER, BUT THERE'S NO VIDEO DRIVER FOR IT.
We'll continue to add video drivers as we become aware of new video
hardware. If you have a new graphics adapter that isn't listed, we may
already have a driver available for it. If not, but you have the programming
specs, contact me to see if we can develop a driver together.
I'VE GOT A VGA WITH AN S3 CHIPSET, BUT THERE'S NO S3 DRIVER.
Use the VESA driver for S3 boards.
I SELECTED THE VESA DRIVER, BUT IT ONLY SHOWS A COUPLE OF MODES!
Some manufacturers rush a new board to market without fully implementing
VESA ("We've got a Windows driver, what more could anyone want?")
Fortunately, most manufacturers will upgrade the ROM BIOS once it's ready.
Contact the board manufacturer.
WHAT DRIVER DO I USE FOR AN ATI 'ULTRA'
A lot of people seem to be confused about the ATI 'Ultra' line, thinking
they have a 1-meg Super-VGA. Most of these models are actually two half-
cards; a 512k Super-VGA (use the ATI VGA driver) and a 1-meg 8514/a (put
ATI's version of HDILOAD in AUTOEXEC and use the 8514/a driver).
Printer Drivers (enhanced program):
----------------------------------
THE LIGHTS ON MY HP LASER PRINTER BLINK FOR A FEW SECONDS AND THEN IT EJECTS
A BLANK (OR PARTIALLY PRINTED) PAGE.
The printer may not have enough internal memory to store BOTH soft fonts and
the graphics data. You need to remove soft fonts from printer memory to
print graphics. With minimum memory installed, you may only be able to print
at 75 dpi in <F>ast mode.
WHEN I PRINT IN <Q>UALITY MODE, I ONLY GET A PARTIAL PAGE
You're out of (computer) memory. See "Printing" in CSHOW.DOC for details.
I JUST GOT AN HP DESKJET 500C (OR 550C). DO YOU HAVE A DRIVER FOR IT?
As of 1/93, we've tried for MONTHS to get ink color information through the
HP Peripherals Developers Program, and a number of DeskJet owners have
called HP to complain to them and attempt to get the technical information.
We're still trying to track down the specifications we need, but so far HP
hasn't been able to provide them.
[Q&A.DOC] Page 3
GIF files:
---------
WHERE DO GIF FILES COME FROM?
WHERE CAN I FIND A DESCRIPTION OF THE GIF FILE FORMAT?
WHERE CAN I GET MORE GIF GRAPHICS?
HOW CAN I CREATE A GIF FROM A PHOTOGRAPH?
The GIF (Graphics Interchange Format), pronounced "JIF", was designed by
CompuServe and the official specification released in June of 1987. Since
that time, it has become very popular, due to several factors.
First, GIF uses an efficient compression routine which makes graphics files
significantly smaller than in virtually any other format. Secondly, by
design, it's an INTERCHANGE format. Graphics may be created by paint
programs, fractal generating programs, on scanners or video capture boards.
The originating computer might be an IBM, Apple, Color MAC, Amiga, or
virtually any type of computer. Since most computers with graphics
capabilities have (at least one) GIF display program, the graphics can
easily be "moved" from one type of computer to another.
As GIF was created by CompuServe, the Graphics Support forum (PICS) is the
place to find complete, accurate, and up-to-date information about GIF. If
you're not a CompuServe subscriber, but are seriously interested in trying
graphics programming, I do recommend subscribing (call 1-800-848-8199,
operator 229, to sign up or to verify current costs. As of 4/91 it's $39.95
for a "start-up" subscription which includes a hard-bound user's guide, a
subscription to the CompuServe Magazine, and $25 credit toward connect time,
which is currently $12.50 per hour at 1200/2400 baud.)
We've had a number of requests for "disks full of GIFs" or other graphics
files. While CompuShow has been included on ShareWare disks with GIFs of
various descriptions, these disks did not come from Canyon State Systems. We
don't sell or distribute GIFs or other graphics files, with the exception of
a few samples that are included on the enhanced program disk.
The best place to look for GIF images is CompuServe; "GO GRAPHICS" for a
menu of graphics forums, containing literally thousands of images and
related files. GIF images are also beginning to appear in significant
numbers on other commercial services and a number of BBS's.
+--------------------------------------------------------------------------+
| The following registered users of CompuShow operate bulletin boards. |
| Other registered users who would like to be added to this list, please |
| contact me. |
+--------------------------------------------------------------------------+
Jim Priser (JPix) operates a high-quality scanning service. Contact him by
voice line at 219-267-3980.
New Dimensions BBS 408-274-5550 has a large and growing GIF library.
The Godfather BBS 813-289-3314 has a free public-access section and an adult
section requiring subscription.
Adline USA BBS 708-260-8818 for GIF files online and a scanning service.
[Q&A.DOC] Page 4
Event Horizons Commercial BBS has 64 lines to access 2.2 giga-bytes of
graphics at up to 9600 baud. In addition, they have a mail order catalog
service with world-wide shipment:
Subscribers 800 GO MODEM Event Horizons
1200/2400 bps 503 697-5100 311 Avenue "B", Suite 209
USR HST 9600 bps 503 697-5126 Lake Oswego, OR 97034
V32 9600 bps 503 697-5129 Voice: 503 697-7700
Oracomm Technical Support 612-894-5879.
The Slacc Stack BBS in St. Louis 314-367-1903 has a growing selection of GIF
graphics and the entire PC-SIG library on line.
The Hideout BBS in Newton NC 704-464-7235 features "many GIF files".
America Online with over 6000 GIF images. Call 1-800-827-6364 for a free
(Graphical User Interface) software sign-up kit and the first month's
membership free.
The Public Connection in Ft Worth TX 817-738-7336 (has no 'adult' graphics).
Graphics House BBS in Minot ND 701-839-8306 has "4 or 5 thousand GIFs".
Mulligan's Place BBS, Mundelein Il 708-566-6183 "features live multi-user
chats/games, thousands of files and more".
+--------------------------------------------------------------------------+
| We reserve the right to remove from this list any BBS which tampers with |
| any CompuShow documentation or fails to comply with the requirement that |
| CompuShow must be distributed unmodified and intact. |
+--------------------------------------------------------------------------+
[Q&A.DOC] Page 5