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- DTIFF - Display Tag Image File Format, Version 2.0 (c) 1988 Late Night Software
-
- 11/28/88
-
- DTIFF is a utility that displays TIFF file images on systems that have a CGA,
- EGA, VGA, MCGA, Hercules, IBM 8514/A, or AT&T display adapter cards.
-
- The command to use is:
-
- dtiff <tiff file> [ options ]
- Where:
- <tiff file> is the DOS name of the Tag Image File Format to display.
- [options] are separated by a space and begin with a '/'. They are:
-
- /rn : Rotate the the picture 'n' degrees, n=0,90,180 or 270
-
- /a : Display the picture 'as is'. If the picture is larger than
- your display, you'll will see only a portion of it.
-
- /dADP : Use the adapter 'ADP', ADP=CGA,MCGA,EGA,EGA64,EGAMONO,VGA,
- IBM8514,HERC, or ATT. If not specified, DTIFF will try to
- detect the type of adapter that is installed in your system.
-
-
- DTIFF can read any TIFF file up to Rev 4.2. DTIFF reads only single plane,
- black & white images. Color and gray scale are not supported.
-
- The sample TIF files included with DTIFF are HARPO.TIF, and CARTOON.TIF
-
- HARPO.TIF is a file from the DEST TIFF Library Validation Images disk that
- comes with the DEST TACS system. It is an example of a scanned B&W photograph.
-
- CARTOON.TIF was scanned on a DEST PC SCAN PLUS. It is an example of a scanned
- drawing.
-
- CARTOON.TIF was taken from the book, "How To Have Sex In Public",
- (c) 1983 Marcel Feigel, Ten Speed Press, Berkeley, California. It is a happy
- little book for people who like that sort of thing - cartoon books.
-
- The size of the picture or drawing and the resolution of the scanner are
- factors in the size of the image. If the image will fit in the resolution of
- your display, then no other processing is needed. However, most images are
- larger that a typical PC display. If the image is larger than your display,
- TIFF tries to squeeze it by skiping rows and columns until it fits. This
- process will tend to produce a grainy image. If you wish to bypass the
- squeezing process, use the "/a" option. You will see the image in its full
- resolution, but not all of it will fit on the screen.
-
- DTIFF ignores the ORIENTATION TAG, so it doesn't know if the image was scanned
- in portrait or landscape. You can use the "/rn" to rotate the image 90, 180 or
- 270 degrees in the counterclockwise direction.
-
- DTIFF will try to detect which display hardware is present in your system.
- However, it will not automatically detect the AT&T or IBM8514/A adapters. If
- you have one of these, use the "/dADP" option to tell DTIFF that you have one
- of these display systems.
-
- Examples:
-
- dtiff harpo.tif /dATT
-
- Displays "harpo.tif" on an AT&T system.
-
- dtiff harpo.tif /a
-
- Displays "harpo.tif" with out fiting the image to the screen. This option has
- no effect if the image will actually fit on your display without compression.
-
- dtiff b:cartoon /r90
-
- Displays "cartoon.tif" from drive "b:" rotated 90 degrees conter clockwise.
- Note that the ".tif" extension is optional.
-
- The options can be used in any combination.
-
- dtiff harpo /dATT400 /r90 /a
-
- dtiff cartoon.tif /r270 /a
-
- The IBM 8514/A driver has not been tested because we can't afford one. It is
- included anyway so you can try it if you're lucky enough to have one.
-
- The IBM VGA adapter and monitor are capable of resolution greater that the
- 640x480 set up by the BIOS mode 17. There is a special driver "VGAX" that will
- let you take advantage of the higher resolutions, however, you must use the
- "/dVGAX" option to activate this driver. If you have a VGA adapter and monitor
- and use the "/dVGAX" option, the TIFF file will be displayed in a screen
- resolution of 720x512 pixels. You can also specify the horizontal and vertical
- resolution to be used with this driver. The "/h<h-res>" and "/v<v-res>" options
- are used for this purpose.
-
- For example, to use a 720x512 resolution on a VGA to display the "cartoon.tif"
- file:
-
- dtiff cartoon /dVGAX
-
- To display the file with 736x530 resolution:
-
- dtiff cartoon /dVGAX /h736 /v530
-
- The horizontal resolution must be a multiple of 16 although the vertical
- resolution can be any number.
-
- This article from BYTE MAGAZINE Vol 13, Num 11, "IBM Special Edition", "VGA
- VIDEO MODES", p. 187, by Richard Wilton was used to implement the VGAX driver.
- In this article, Mr. Wilton mentions that the maximum resolution for an IBM VGA
- monitor is 720x512, so use this feature with care. We have been able to get a a
- fairly good display at 768x560 but the image deteriorates at resulotions higher
- than this. Mr. Wilton also states that the VGA adapter is capable of driving a
- multiscanning monitor at 800x600. We'd like to thank Mr. Wilton and Byte
- magazine for this information.
-
- Although we have made resonable attempts to test and verify this program, we do
- not guarantee its correctness on any specific hardware confuration.
-
- Take extra care when using this and any other software obtained from a public
- system. Worm and virus programs are becomming more common. You should try to
- isolate the program buy running it from a floppy disk and booting DOS from the A:
- drive or running it on a floppy disk machine that has no hard disk until you
- are satisfied that it is not harmful. We have used 2 programs "CHK4BOMB" and
- "BOMBSQAD" to check software.
-
- If you suspect that this program has been tampered with or want to verify that
- it is unaltered, you can send it to us on a floppy disk for verification.
- Include ALL the files that you've downloaded and please tell us where you got
- them from in case they have been tampered with. We will also send you some
- other programs that we've uploaded and you can be sure of their validity.
-
- If you have any questions or comments about DTIFF , please send them to:
-
- Late Night Software
- PO BOX 81471
- Chicago, IL 60681-0471
-
- If you wish to verify or receive other programs, please send a floppy
- disk along with your comments.