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- Natural Software
- 19 South 5th. Street
- St. Charles, Illinois 60174
- (312) 377-7320
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- This share-ware utility program: GEMCAP.COM, allows you to capture
- screen images from other programs, save them in separate GEM .IMG
- files, and later load them into other programs that can read this
- format such as Ventura Publisher.
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- GEMCAP is a Terminate and Stay Resident (TSR) program. When you run
- it from the DOS command line, it will announce its presence and
- quietly sink into the background and wait to be called into action
- (when its "hot key" is pressed). When you run GEMCAP, you must
- provide it with the location and starting file name to use to store
- the screen images it captures. For example, you might start GEMCAP
- with this command:
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- GEMCAP C:\SCREENS\SCREENA.IMG
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- Now GEMCAP will store its screens in the SCREENS sub-directory. The
- first screen it saves will be called SCREENA.IMG, the second will be
- called SCREENB.IMG. Each subsequent .IMG file will increment the
- character in the filename just before the extension. These files are
- graphic bit image files compatible with any program that reads GEM
- .IMG files, regardless of whether the original screen was in text
- mode or graphics mode.
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- To activate GEMCAP and save the current screen to a .IMG file, you
- press the [Alt + left Shift] keys together. You will hear a beep when
- GEMCAP is called. Three beeps means it successfully wrote an .IMG
- file to the specified directory. Only one beep means it was unable to
- create the file (could not find the directory?). Only two beeps means
- it created the file, but could not write the full 16k screen buffer,
- (disk full?).
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- GEMCAP will detect the current video mode and adjust. It converts
- text mode screens into bit mapped graphics.
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- Like any other TSR, GEMCAP may have compatibility problems with other
- software, especially other TSR's. If you have trouble, try installing
- GEMCAP by itself and adding your other TSR utilities one at a time
- after you get GEMCAP to work.
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- Removing GEMCAP:
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- You can remove GEMCAP from memory (well, almost) by pressing the [Alt
- + Right Shift] key combination. This disengages GEMCAP so that it
- will not interfere with other software. This will also release (most
- of) the memory used by GEMCAP. When loaded and active, GEMCAP uses
- 3856 bytes of memory. After removal with [Alt + Right Shift], only
- 288 bytes remain allocated. It's probably a good idea to do this only
- at the DOS command prompt!
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- Different sized images:
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- The size of the captured image is controlled by two words in the .IMG
- file. These are constants in the GEMCAP program. The first word
- specifies the pixel size in width, the second word specifies the
- pixel size in height (unit of measure is in microns). The default
- values are: (in hexidecimal):
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- Address Value
- 0108 00D5 (width),
- 010A 01AA (heigth).
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- To make the displayed image one half the size of the default, change
- these values to
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- Address Value
- 0108 006A (width),
- 010A 00D5 (heigth).
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- The steps using Debug to do this are: (you enter the stuff marked ^^)
-
- DEBUG XYZ.IMG (Load the image file)
- ^^^^^^^^^^^^^
- E 0108 (enter data at address 0108)
- ^^^^^^
- XXXX:0108 00.00 D5.6A (change 00D5 to 006A, press
- ^^ ^^ space bar between entries)
-
- E 010A (do the same for address 010a)
- ^^^^^^
- XXXX:010A 01.00 AA.D5 (change 01AA to 00D5)
- ^^ ^^
- W (write the changes to the file)
- ^
- Writing 4020 bytes
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- Q (return to DOS)
- ^
- You can experiment with other values. However, some combinations will
- cause truncations of pixels when the image is displayed.
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- If you find a set of values that work for your application and wish
- to make them the default values for all captured images, change the
- corresponding values in the program (GEMCAP.COM) itself. These are at
- address locations 0951 and 0953 (hex) when GEMCAP is loaded into
- DEBUG.
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- ShareWare:
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- GEMCAP is being distributed as shareware. This means that it is not
- free. This means that you must pay to use it. However, you do not
- have to pay to try it, test it, and to determine if it is going to be
- useful to you. You are probably familiar with the concept by now.
- ShareWare programs give you the advantage of "test driving" them. The
- advantage to the developer is a relatively inexpensive distribution
- method. For this concept to work and keep working for our mutual
- advantage, you really must register and pay for the software you
- actually find useful.
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- To register your use of GEMCAP, send $20.00 to Natural Software at
- the address above. We will send you a description of our other
- software offerings and provide telephone support.
-
- If you have suggestions for improvement, or problems please write or
- call.
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