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1992-10-08
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TECHNICAL SUPPORT MANUAL
SUNSHOW IMAGE TOOLKIT and
SUNSHOW PROFESSIONAL IMAGE TOOLKIT
VIDEO SUPPORT, July, 17, 1992
Video Cards Supported:
NOTE: Special video situations may only be supported in the SunShow
Professional package, as noted below). In all cases, Sun Country recommends
support of recognized standards (video modes, manufacturers, file formats,
etc.). Programmers run extra risks when they intend non-standard formats, etc.
1. No SunShow External Drivers Required for the following IBM-compatible video
modes. All SunShow Image Toolkit and Professional Toolkit routines operate
correctly on IBM-compatible standard PC video cards.
*IBM Compatible CGA (support all graphic modes, but mode 6 recommended
for graphics)
*IBM Compatible EGA (Note: Very OLD IBM EGA
w/ 64K (128K is normal) video memory have
known limitations - Cannot support 640x350x4
NOTE: 320x200x16 and 640x200x16 ARE supported on these
obsolete EGA video cards by SunShow)
NOTE: Hardware limitations on certain EGA cards: PALETTE cannot be grabbed
on all true EGA cards (not cards having EGA emulation modes),
therefore TSR screen capture of palette will be incorrect.
In SunShow's libraries for Clipper, any function that needs to grab the screen
may not grab palette correctly for this same reason.
*IBM Compatible VGA: No known or reported problems.
Note: The MDA video card does NOT support graphics, therefore, cannot be used
with images. The MCGA for the PS/2 only supports 320x200x4, 320x200x256,
640x200x2, and 640x480x2 graphics modes and outputs RGB analog video signals
not TTL. The Hercules Monochrome Graphics Adapter supports 720x348x2.
2. External Drivers Required: Beyond VGA Mode 19 & Hercules Mono
VIDEO DETECTION
SUNSHOW Image Converter SuperVGA Video Drivers
Sun Country Software Products currently support more than 50 video display
adapters having graphic and text resolution capabilities beyond generic IBM
compatible VGA. These extended graphic and text video modes are commonly
referred to as SuperVGA. The installation utility, SETUPDRV.EXE has a list of
currently supported Video Board Manufacturers' Super or Extended VGA boards
with 256K, 512K, or 1Meg onboard video ram on its main menu. Please note that
for full SVGA support, 1 Meg onboard video ram is required for access to all SVGA
video modes, especially 1024 x 768 x 256 and beyond. Special notes contained
within HDILOAD.DOC apply to 8514/A and IBM XGA graphics adapters.
FIRST TIME INSTALLATION WITH INSTALL.EXE from Distribution Disk
When installing SUNSHOW Image Toolkit from the distribution diskette with
INSTALL.EXE, the video driver installation utility, SETUPDRV.EXE, is automatically
invoked as a part of the installation. INSTALL.EXE is menu-driven and is by far the
easiest, most convenient method to use to correctly install the Image Toolkit. You
must manually select and type in the appropriate number of the video card in the
PC from the list, then press <<ENTER>>. Both the extended mode video driver
and the extended mode font driver will be installed for you.
AUTODETECTION of SVGA CHIPSETS
A video chipset autodetection routine has been implemented in the current
release of SETUPDRV.EXE that will attempt to make an identification of the chipset
used in the video card. The possible chipset detected will be displayed above the
list of currently supported SVGA cards on the main menu. No SVGA detection
scheme is totally reliable at this time, since many manufacturers do not provide a
positive method of identifying their boards. For this reason, the autodetection
routine will only suggest what it thinks is the correct chipset, the user is still
required to type in the number for the video card manually. We strongly
encourage you to verify the video card manufacturer, manufacturer of the chipset
used, and the amount of video memory actually on the board. There is also no
known method for detecting the amount of video memory installed on any brand
of SVGA card.
MANUAL RE-INSTALLATION with SETUPDRV.EXE
SUNSHOW'S SETUPDRV.EXE will make installation convenient & easy from a
menu-driven prompt. You must have all of the decompressed DRIVERS and the
installation program, SETUPDRV.EXE in the working directory. Simply invoke
SETUPDRV from the DOS prompt and a menu will appear. Select the appropriate
brand of video card from the numbered list, type in the number and press ENTER.
Both the extended mode video driver and the extended mode font driver will be
installed.
MANUAL INSTALLATION:
Current Drivers must be copied to the file names that SUNSHOW utilities and
display modules require. There are TWO drivers necessary. The VIDEO DRIVER
must be named:
SUNVIDEO.DRV.
The FONT DRIVER must be named:
SUNFONTS.DRV.
Please note that <169>fonts<170> in the driver name is plural. Rather than
renaming the driver files included on the distribution diskette, it is a better
practice to copy it to this new file name and retain the original.
TROUBLE SHOOTING VIDEO PROBLEMS
COMMON ERROR MESSAGES:
Even though the SUNSHOW Image Toolkit has a reputation for being easy to use
and trouble-free, occasionally you may experience difficulties. This error list
reference is provided to assist you in diagnosis of many possible problems and
their solutions.
If you are using a DOS shell such as Windows, XTREE, 1DIRPLUS, or DesqView,
you may want to leave the shell and return to DOS. SUNSHOW Image Toolkit
routines are well behaved, but, any co-existing shell or TSR usage runs the risks of
excessive memory allocation or internal contention that could lock up the PC.
SUNSHOW routines do direct screen writes which may cause contention with
ill-behaved TSRs. When SUNSHOW routines give you error messages relating to
OUT OF MEMORY or inability to allocate memory for buffers, the shell or
terminate-and-stay-resident utilities are hogging precious RAM and preventing
from correct operation. Well-known ill-behaved TSRs like SIDEKICK are definitely
at risk for crashing when attempting to co-exist with database applications.
Microsoft WINDOWS 2.11 or older will NOT work with SUNSHOW Image Toolkit
routines. All versions of DESQview, including DV/X are known to not correctly
restore or refresh SuperVGA graphic mode screens upon returning to a graphic
process (after swapping to another process). This is a DESQview problem and
occurs even with DESQview-specific or DESQview-aware programs running in SVGA
graphics modes. Unless your graphic mode application can refresh its own
graphics screen, there is no currently known solution. The graphic mode
process works correctly except for this problem and only when swapped out.
It does not crash. Quarterdeck Systems is working on this problem.
ERROR: CANNOT FIND GRAPHIC MODE FOR THIS IMAGE
A. SUNSHOW video drivers for the correct video card MUST be installed to
operate the program correctly. For convenience, use SETUPDRV.EXE to install
the drivers from a menu-driven utility.
B. Video card may not have enough video RAM. Most of the useful SVGA video
modes require at least 512K video RAM.
C. You may have scanned or video captured an image larger than screen
dimensions for the currently installed video card. SUNSHOW display routines,
named, "SHOWxxx.EXE, are "REAL MODE" display that require that the image must
fit within the screen dimensions of a supported video mode. Either adjust the
screen width and height to smaller screen dimensions by scaling the image to
smaller dimensions with one of the scaling functions or use the "VIRTUAL MODE"
display modules in the SUNSHOW PROFESSIONAL Image Toolkit. It usually is
better to prepare images so that they are displayed REAL MODE since this is
faster, better suited to commercial imaging applications, and uses less PC
resources. Shold you require VIRTUAL display where images are larger than
screen dimensions, use the SUNSHOW display modules, named "VIEWxxx.EXE.
With virtual display, any mode having the correct number of colors or greater can
display any size image. The image will load through the EMS page frame into LIM
4.0 expanded memory into a virtual size, and you can zoom, scroll, and pan a
displayable viewport onto the virtual image.
IMAGE DIAGNOSTICS to SOLVE VIDEO PROBLEMS
A helpful diagnosis utility is included with SUNSHOW Image Toolkit. It's called
INFO.EXE and will return useful diagnostic information about the image that you
are having difficulty with. To use it, type:
INFO FILENAME.EXT
and it will display useful information about the image, such as:
SCREEN WIDTH
SCREEN HEIGHT
IMAGE WIDTH
IMAGE HEIGHT
NUMBER OF COLORS
ERROR: CANNOT ALLOCATE MEMORY FOR LINE BUFFERS
The most common reason for this error message is that
terminate-and-stay-resident utilities or a DOS shell has taken some of the memory
that our routines also need. You must unload any such memory stealing utilities
for SUNSHOW to work properly. FoxPRO may need to be told to not hog all the
memory. The Clipper database kernal libraries have a large memory requirement.
You application may need to be swapped out to complete the function returning the
above error message.
TROUBLE SHOOTING: SPECIFIC ADVICE TO TECHNICAL SUPPORT
You are advised to FIRST check video card manufacturer's documentation for valid
video modes, amount of video memory, and chipset used. In some cases, it may
be necessary to remove cover from PC and physically look at the chipset used
and the amount of memory chips. The best way to describe the situation for those
users not having technical knowledge is to describe the chipset in the following
manner:
1. Look for a large, SQUARE VLSI chip which may be surface mounted, and will
be the largest chip on the board, and usually centrally located. Read the
manufacturer's name, trademark, and possibly the chip number.
2. There will be rows or columns of small, rectangular identical chips on the
video card. There will be four or eight usually.
3. Count the small rectangular chips, we need to know the quantity of these
chips. Do not confuse these chips with the 28-pin BIOS chips. Usually
the video memory chips are DRAMs or VRAMs. They may also be ZIP modules
(8514/A, etc.) or possibly SIMMS (Herc. Graphic Station, etc.)
FOUR CHIPS - 256K of video memory or 512K of video memory
Read the chips for size. Size is printed on chips.
Multiply the number of chips by memory amount on single chip.
Single memory chips can be 256x1 or 256x4
EIGHT CHIPS - Usually 1 Meg. video memory. 256x1, 256x4, 1x1 times chips.
Could also be 2 Meg (NCR, etc.).
IF SVGA card has the following onboard RAM, you may expect (usually) the
following resolutions, except as noted below (manufacturer's specifications
always take precedence):
256K onboard Video RAM - 640x400x256 - 800x600x16
512K onboard Video RAM - 800x600x256 - 1024x768x16
1 Meg onboard Video RAM - 1024x768x256, some, with BIOS extensions
can support 1280x1024x16/1024x1024x256, etc.
Usually, there will be a 16 color mode available that is one resolution higher than
the highest valid 256 color mode.
Some cards also support 640x350x256 (ET-4000, etc. but we do not recommend
use of this mode).
PARADISE Note: Western Digital has chosen to NOT support 800x600x256,
therefore any board having a Paradise or WDC chipset will not have this mode,
even though it has 512K video RAM. Some early Paradise & WDC also does not
support 1024x768x16 (including Compact, Dell, AST, etc.) Certain releases
of early WDC chipsets do not support all modes.
IBM also has chosen to not support 800x600x256 in most cases.
SVGA MODES to Recommend to commercial customers:
640x400x256 (not supported by all manufacturers)
**640x480x256 includes all 16-color modes, has 1:1 pixel aspect ratio
**800x600x256 includes all 16-color modes, has 1:1 pixel aspect ratio
**1024x768x256 includes all 16-color modes, has 1:1 pixel aspect ratio
** highly recommended for commercial applications.
MONITORS: 800x600 at higher require analog, multisync/or analog fixed
frequency Monitors that support the desired video modes. Incorrect display,
rolling of picture, jumbled image, distortion and severe monitor damage may
result from over-driving monitor. Even though monitor may appear to support the
desired modes, some video cards can easily over drive inexpensive monitors,
even those claiming to support the desired modes, because they are high
performance and require greater bandwidth than monitor can support (C&T 453
chipsets, etc) Some SVGA cards have dip-switches or jumpers to "throttle back"
or reduce the bandwidth to fit capabilities of inexpensive monitors. This is a
different parameter than the 8-bit/16-bit mode of operation jumpers.
AST - (Paradise chipset, see Paradise notes, above)
ATI Wonder (ATI chipset)
ATI VGA Wonder (ATI chipset)
No ATI High Color support
ATI Elite (Trident chipset)
CEG (see Edsun)
CHIPS & TECHNOLOGY 453 Chipset 1Mg, 512K 1024x768
CHIPS & TECHNOLOGY 452 Chipset, 512K, 640x480/800x600
Even though 452 has 512K, it only supports
640x480x256
CIRRUS LOGIC
COMPAQ, 512K, 256K (using Paradise chipset)
DEFINICON ET-4000, 1Mg, 512K, 256K
DELL (using Paradise chipset) Older
DELL (using WDC chipset) Newer, 1024x768x 256, 800x600x256!!
DIAMOND SpeedStar ET-4000, 1 Meg, 512K, 256K
EDSUN Laboratories CEG/DAC Continuous Edge Graphics
In conjunction with 1 Meg SVGA TSENG
ET-4000, C&T 452/453, TRIDENT 8900,
PARADISE 1024, etc Chipsets.
Supported, but is special case -
Requires utilities in Professional
to create, display, convert, etc
(no .BINs or .LIB functions yet)
EVEREX (Everex chipset) 512K video RAM
FORTUNER (Trident 8800) 512K video RAM
GENOA (Genoa chipset) 512K memory, Requires Sigma driver
NOT generic Tseng ET-3000
GENOA - 1 Meg (not supported unless it has ET-4000 installed)
GRABERT Autopack Apogee ET-4000, 1Mg, 512K, CEG and SVGA
GROUNDHOG Graphics SHADOW, ET-4000, 1Mg, 512K, 256K
HEADLANDS Technology (see VIDEO Seven up to 512K only)
HERCULES Monochrome Graphics, 720x348x2
IBM XGA 1024x768x256, 640x480x256 (16 color modes supported
but XGA requires 1 Meg video memory to display
1024x768 AND 640x480!! (SunShow Professional only)
IBM 8514/A Genuine IBM 8514/A only (SunShow Professional only)
IMTEC (Trident 8800) 512K video RAM
JATON (Trident 8800) 512K video RAM
LOGIX (Trident 8800) 512K video RAM
MAXXON )Trident 8800) 512K video RAM
MILLENIUM Spectrum ET-4000, 1Mg video RAM, BIOS extensions to
1280x1024x16
MONOLITHIC Systems UltraVGA 452 - 512K, 640x480 CEG and SVGA
MONOLITHIC Systems UltraVGA 453 - 1 Meg, 1024x768 CEG and SVGA
NCR 77C22 Chipset 4 Meg, 2 Meg, 1 Meg, 1024x768x256
NOTE: BIOS extension to 1280x1024 is claimed
by manufacturer but not implemented at this date)
OAK TECHNOLOGY Chipset 512K video RAM
ORCHID ProDesigner, Tseng ET-3000, 512K, 256K
ORCHID ProDesigner II, Tseng ET-4000, 1Mg, 512K, 256K
PARADISE, 512K, 256K 800x600x16, 640x480x256 (see Paradise note above)
PRISM X-VGA 1 Meg, Tseng ET-4000, BIOS extensions to 1280x1024x16
SIGMA, Tseng ET-3000, 512K video RAM, Requires Sigma driver
NOT generic Tseng ET-3000
SIGMA Legend, Tseng ET-4000, 1 Meg, 512K, 256K
SMART VGA (Trident 8800) 512K video RAM
SpeedStar (see DIAMOND) Tseng ET-4000 Chipset, 1Mg, 512K, 256K
1024x768x256
SpeedStar Plus (see DIAMOND) Tseng ET-4000 Chipset, 1Mg, 512K, 256K
(short card) 1024x768x256
STB, Tseng ET-3000, 512K, 256K, Requires STB driver NOT
generic Tseng ET-3000
STB, Tseng ET-4000, 1Mg, 512K, 256K 1024x768x256 Requires STB4 driver
NOT generic Tseng ET-4000
TECMAR 512K video RAM
TRIDENT IMPACT 8900 Chipset, 1Mg, 512K, 256K
TRIDENT TVGA 8900 (8916-8) Chipset, 1Mg, 512K, 256K
TRIDENT generic 8900 Chipset, 1Mg, 512K, 256K
TRIDENT generic 8800 Chipset, 512K, 256K
TSENG LABS generic ET-3000 Chipset, 512K, 256K
TSENG LABS generic ET-4000 Chipset, 1Mg, 512K, 256K
VEGA (see VIDEO Seven, older cards may not include complete video modes)
VESA Compatible SVGA Cards, 1Mg, 512K, 256K, See Vesa Note:
(Older cards may require TSR, Newer cards are BIOS compatible,
Some manufacturers may not have all modes implemented, may be
slower than board specific driver. Also, VESA standard
does support up to 1280x1024x256, as does Sun Country driver)
640x400x256
640x480x256
800x600x16 and 800x600x256
1024x768x16 and 1024x768x256
1280x1024x16 and 1280x768x256
Note: VESA High Color modes are not supported by Sun Country)
VGA TWEAK MODES Non-standard modes using Sun Country drivers:
Does not require SVGA, will work with an IBM compatible
standard VGA: 320x400x256 & 360x480x256, 720x540x16, 800x600x16
(800x600 requires multisync analog monitor)
VIEWPOINT by Everex (non-standard Trident 8800)512K video RAM
VIEWSONIC PerfectView ET-4000, 1 Meg. 1024x768
VIDEO SEVEN Chipset, 512K, 256K
WESTERN DIGITAL Paradise Chipset, 1Mg, 512K
XEDAC ET-4000, 1Mg video RAM, CEG and SVGA to 1024x768
XGA, IBM
ZYMOS 512K video RAM
3. Not currently supported:
SIERRA High Color (32,768 palette 16-bit)
8514A with video pass-through to Vesa connector
(where 2 boards are installed - separate non-IBM 8514 and
regular SVGA using ribbon cable to Vesa pass-through
connector on SVGA card)
Texas Instruments 34010/34020/34040
HERCULES Graphic Station
S3 Graphic Accelerator chipset
Weitek W5086 Graphic Controller
Other Graphic Accelerators or Coprocessors